criyle/codenet-compile-errors huggingface dataset:
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    string S1, T;
    cin >> S1;
    cin >> T;
    string S;
    S = S1;
    bool hantei = true;
    vector<string> s;
    for (int i = 0; i < S.size() - T.size() + 1; i++)
    {
        S = S1;
        hantei = true;
       for (int j = 0; j < i; j++)
       {
           /* code */
          if (S[j] == '?')
          {
              /* code */
              S[j] = 'a';
          }
          
       }
       
       for (int k = 0; k < T.size(); k++)
       {
           /* code */
           if (S[i + k] == T[k])
           {
               /* code */
           }else if (S[i + k] != T[k] && S[i + k] != '?')
           {
               /* code */
                hantei = false;
                break;
           }
           
           else if (S[i + k] == '?')
           {
               /* code */
               S[i + k] = T[k]; 
           }
           
       }
       for (int l = T.size() + i; l < S.size(); l++)
       {
           if (S[j] == '?')
           {
               S[j] = 'a';
           }
           
       }
       
       if (hantei)
       {
          s.push_back(S);
       }
       
    }

    if(s.size() == 0) cout << "UNRESTORABLE" << endl;
    else { sort(s.begin(), s.end()); cout << s[0] << endl; }
    
    
    return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:50:18: error: 'j' was not declared in this scope
   50 |            if (S[j] == '?')
      |                  ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    string S1, T;
    cin >> S1;
    cin >> T;
    string S;
    S = S1;
    bool hantei = true;
    vector<string> s;
    for (int i = 0; i < S.size() - T.size() + 1; i++)
    {
        S = S1;
        hantei = true;
       for (int j = 0; j < i; j++)
       {
           /* code */
          if (S[j] == '?')
          {
              /* code */
              S[j] = 'a';
          }
          
       }
       
       for (int k = 0; k < T.size(); k++)
       {
           /* code */
           if (S[i + k] == T[k])
           {
               /* code */
           }else if (S[i + k] != T[k] && S[i + k] != '?')
           {
               /* code */
                hantei = false;
                break;
           }
           
           else if (S[i + k] == '?')
           {
               /* code */
               S[i + k] = T[k]; 
           }
           
       }
       if (hantei)
       {
          s.push_back(S);
       }
       
    }

    if(s.size() == 0) cout << "UNRESTORABLE" << endl;
    else { sort(s.begin(), s.end()); cout << s[0] << endl;
    
    
    return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:61:2: error: expected '}' at end of input
   61 | }
      |  ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    string S1, T;
    cin >> S1;
    cin >> T;
    string S;
    S = S1;
    bool hantei = true;
    for (int i = 0; i < S.size() - T.size() + 1; i++)
    {
        S = S1;
        hantei = true;
       for (int j = 0; j < i; j++)
       {
           /* code */
          if (S[j] == '?')
          {
              /* code */
              S[j] = 'a';
          }
          
       }
       
       for (int k = 0; k < T.size(); k++)
       {
           /* code */
           if (S[i + k] == T[k])
           {
               /* code */
           }else if (S[i + k] != T[k] && S[i + k] != '?')
           {
               /* code */
                hantei = false;
                break;
           }
           
           else if (S[i + k] == '?')
           {
               /* code */
               S[i + k] = T[k]; 
           }
           
       }
       if (hantei)
       {
          s.push_back(S);
       }
       
    }

    if(s.size() == 0) cout << "UNRESTORABLE" << endl;
    else cout << s[0] << endl;
    
    
    return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:49:11: error: 's' was not declared in this scope
   49 |           s.push_back(S);
      |           ^
a.cc:54:8: error: 's' was not declared in this scope
   54 |     if(s.size() == 0) cout << "UNRESTORABLE" << endl;
      |        ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
string s,ss;
int main()
{
	cin >>s>>ss;	
	for (int i=s.size()-s1.size();i>=0;i--)
	{
		bool fl=1;                         //全局变量 
		for (int j=0;j<ss.size();j++)
		{
			if (s[i+j]=='?') continue;  //i是首位置 
			if (s[i+j]!=ss[j])
			{
				fl=0;
				break;
			}
		}
		if (fl)                          //没有break 
		{
		    for (int j=0;j<ss.size();j++) if (s[i+j]=='?') s[i+j]=ss[j];//和ss对应的？改成ss字符 
		    for (int j=0;j<s.size();j++) if (s[j]=='?') s[j]='a';       //其他问号改成a 
		    cout <<s;
		    return 0;
		}
	}
	cout <<"UNRESTORABLE";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:29: error: 's1' was not declared in this scope; did you mean 'y1'?
    7 |         for (int i=s.size()-s1.size();i>=0;i--)
      |                             ^~
      |                             y1
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main()
{
  ios::sync_with_base(false);
  cin.tie(0);
  string s,t;
  cin>>s>>t;
  int n = s.size();
  int m = t.size();
  
  if(n<m)
  {
    cout<<"UNRESTORABLE"<<endl;
    return 0;
  }
  bool ans = false;
  for(int i=n-m;i>=0;i--)
  {
    bool found = true;
    for(int j=0;j<m;j++)
    {
      if(s[i+j]=='?')
      {
        continue;
      }
      if(s[i+j]!=t[j])
      {
        found = false;
        break;
      }
    }
    if(found)
    {
      ans = true;
      for(int j=0;j<m;j++)
      {
        s[i+j] = t[j];
      }
      break;
    }
  }
  if(!ans)
  {
    cout<<"UNRESTORABLE"<<endl;
    return 0;
  }
  else
  {
    for(int i=0;i<n;i++)
    {
      if(s[i]=='?')
      {
        s[i]='a';
      }
    }
    cout<<s<<endl;
    return 0;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:8: error: 'sync_with_base' is not a member of 'std::ios' {aka 'std::basic_ios<char>'}
    6 |   ios::sync_with_base(false);
      |        ^~~~~~~~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main()
{
  string s,t;
  cin>>s>>t;
  int n = s.size();
  int m = t.size();
  
  if(n<m)
  {
    cout<<"UNRESTORABLE"<<endl;
    return 0;
  }
  bool ans = ans;
  for(int i=n-m;i>=0;i++)
  {
    bool found = true;
    for(int j=0;j<m;j++)
    {
      if(s[i+j]=='?')
      {
        continue;
      }
      if(s[i+j]!=t[j])
      {
        found = false;
        break;
      }
    }
    if(found)
    {
      ans = true;
      for(int j=0;j<m;j++)
      {
        s[i+j] = t[j];
      }
      break;
    }
  }
  if(!ans)
  {
    cout<<"UNRESTORABLE"<<endl;
    return 0;
  }
  else
  {
    for(int i=0;i<N;i++)
    {
      if(s[i]=='?')
      {
        s[i]='a';
      }
    }
    cout<<s<<endl;
    return 0;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:49:19: error: 'N' was not declared in this scope
   49 |     for(int i=0;i<N;i++)
      |                   ^
Language: C

#include <bits/stdc++.h>
using namespace std;

string ans = "";
string s,t,tmp = "";
int ls,lt,flag;

int main() {
	cin >> s >> t;
	ls = s.size();lt = t.size();
	if(ls < lt)  {
		puts("UNRESTORABLE");
		return 0;
	}
	for(int i = 0;i < ls - lt + 1;i++) {
		tmp = s;flag = 0;
		for(int j = i;j < i + lt;j++) {
			if(tmp[j] == '?') tmp[j] = t[j - i];
			else {
				if(tmp[j] != t[j - i]) {
					flag = 1;
					break;
				}
			}
		}
	//	cout << tmp << "\n";
		if(flag == 0) {
			for(int j = 0;j < ls;j++) {
				if(tmp[j] == '?') tmp[j] = 'a';
			}
			if(ans == "") ans = tmp;
			else ans = min(ans,tmp);
		}
	}
	if(ans != "") cout << ans << "\n";
	else puts("UNRESTORABLE");
	return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <iomanip>
#include <string>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <tuple>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cassert>
#include <cstdint>
#include <cctype>
#include <numeric>
#include <bitset>
#include <functional>

using namespace std;

using ll =  long long;
using Pll = pair<ll, ll>;
using Pii = pair<int, int>;

constexpr int INF = 1 << 30;
constexpr ll LINF = 1LL << 60;
constexpr ll MOD = 1000000007;
constexpr long double EPS = 1e-10;
constexpr int dyx[4][2] = {
    { 0, 1}, {-1, 0}, {0,-1}, {1, 0}
};
constexpr int A_MAX = 200000;

int main() {
    string s,t;
    cin >> s >> t;
    int n = s.length(), m = t.length();
    int succeeded_index = -1;
    for(int i=0;i<n;++i) {
        bool ok = true;
        for(int j=0;j<m;++j) {
            ok &= (s[i+j] == '?' || s[i+j] == t[j]);
        }
        if(ok) {
            succeeded_index = i;
        }
    }

    if(succeeded_index == -1) {
        cout << "UNRESTORABLE\n";
        return 0;
    }
    for(int i=0;i<n;++i)
        if(succeeded_index <= i && i < succeeded_index+m) {
            cout << t[i-succeeded_index];
        } else if(s[i] == '?') {
            cout << 'a';
        } else {
            cout << s[i];
        }
    }
}


Compiler output:
a.cc:65:1: error: expected declaration before '}' token
   65 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef vector<vector<int>> Graph;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};
#define pi 3.14159265359
#define inf 2147483647
#define INF 9223372036854775807
#define mod 1000000007
#define mod2 998244353

int main() {
    string S, T; cin >> S >> T;
    queue<int> num;
    bool flag;
    if(S.size() < T.size()) S = "UNRESTORABLE";
    else {
        for(int i = 0; i <= S.size() - T.size(); i++) {
            string U = "";
            for(int j = 0; j < T.size(); j++) {
                if(S[i + j] != '?' && S[i + j] != T[j]) {
                    while(!num.empty()) {
                        num.pop();
                    }
                    break;
                }
                else if(S[i + j] == '?') {
                    num.push(i + j);
                }
            }
            while(!num.empty()) {
                int x = num.front(); num.pop();
                S[x] = T[x - i];
                flag = true;
            }
        }
    for(int i = 0; i < S.size(); i++) if(S[i] == '?') S[i] = 'a';
    if(!flag) S = "UNRESTORABLE";
    cout << S << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:44:2: error: expected '}' at end of input
   44 | }
      |  ^
a.cc:15:12: note: to match this '{'
   15 | int main() {
      |            ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;
const ll mod=1000000007;
const int MAX_N = 1000;         // n の最大値
 
// nCk を取得
double nCk(int n, int k) {
double res=1.0;
for(int i=0; i<n; i++){
res*=0.5;}
for(int i=0; i<k; i++){
res*=(double)(n-i);
res/=(double)(k-i);
}
return res;}
 
int main() {
string s,t;
cin>>s>>t;
ll q=s.size();
ll w=t.size();
string a;
ll ca=0;
ll p=-1;
for(ll i=0; i<q-w+1; i++){
a=substr(i,w);
while(ca<w){
if(a.at(ca)==w.at(ca)||w.at(ca)=='?') {
ca++;
continue;}
else{
break;}}
if(ca==w){
p=i;}
ca=0;}
if(p==-1){
cout<<"UNRESTORABLE"<<endl;}
else{
for(ll i=0; i<p; i++){
if(q.at(i)=='?'){
cout<<"a";}
else
cout<<q.at(i);}
cout<<w<<endl;}}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:3: error: 'substr' was not declared in this scope; did you mean 'strstr'?
   28 | a=substr(i,w);
      |   ^~~~~~
      |   strstr
a.cc:30:16: error: request for member 'at' in 'w', which is of non-class type 'll' {aka 'long long int'}
   30 | if(a.at(ca)==w.at(ca)||w.at(ca)=='?') {
      |                ^~
a.cc:30:26: error: request for member 'at' in 'w', which is of non-class type 'll' {aka 'long long int'}
   30 | if(a.at(ca)==w.at(ca)||w.at(ca)=='?') {
      |                          ^~
a.cc:42:6: error: request for member 'at' in 'q', which is of non-class type 'll' {aka 'long long int'}
   42 | if(q.at(i)=='?'){
      |      ^~
a.cc:45:9: error: request for member 'at' in 'q', which is of non-class type 'll' {aka 'long long int'}
   45 | cout<<q.at(i);}
      |         ^~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i=0;i < (n); ++i)
#define ALL(x) (x).begin(), (x).end()
using namespace std;
typedef long long ll;
typedef pair<int,int> P;
typedef vector<vector<int>> Graph;

int main() {
    string s,t;
    cin >> s >> t;
    int ss = s.size();
    int tt = t.size();
    map<string,int> A;
    if(ss<tt) {
        cout << "UNRESTORABLE" << endl;
        return 0;
    }
    rep(i,1+ss-tt){
        bool flag = true;
        rep(j,tt){
            if(s[ss-1-i-j]!=t[tt-1-j]&&s[ss-1-i-j]!='?') flag = false;
        }
        if(flag){
            string tmp="";
            rep(j,ss){
                if(s[j]=='?'){
                    tmp += 'A';
                } else {
                    tmp += s[j];
                }
            }
            A[tmp]=1;
        }
    }
    auto l = A.begin();
    if(A.empty()) cout << "UNRESTORABLE" << endl;
    else cout << l.first << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:38:20: error: 'struct std::_Rb_tree_iterator<std::pair<const std::__cxx11::basic_string<char>, int> >' has no member named 'first'
   38 |     else cout << l.first << endl;
      |                    ^~~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i=0;i < (n); ++i)
#define ALL(x) (x).begin(), (x).end()
using namespace std;
typedef long long ll;
typedef pair<int,int> P;
typedef vector<vector<int>> Graph;

int main() {
    string s,t;
    cin >> s >> t;
    int ss = s.size();
    int tt = t.size();
    map<string,int> A;
    if(ss<tt) {
        cout << "UNRESTORABLE" << endl;
        return 0;
    }
    rep(i,1+ss-tt){
        bool flag = true;
        rep(j,tt){
            if(s[ss-1-i-j]!=t[tt-1-j]&&s[ss-1-i-j]!='?') flag = false;
        }
        if(flag){
            string tmp="";
            rep(j,ss){
                if(s[j]=='?'){
                    tmp += 'A';
                } else {
                    tmp += s[j];
                }
            }
            A[tmp]=1;
        }
    }
    if(A.empty()) cout << "UNRESTORABLE" << endl;
    else cout << A.begin().first << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:37:28: error: 'std::map<std::__cxx11::basic_string<char>, int>::iterator' {aka 'std::_Rb_tree<std::__cxx11::basic_string<char>, std::pair<const std::__cxx11::basic_string<char>, int>, std::_Select1st<std::pair<const std::__cxx11::basic_string<char>, int> >, std::less<std::__cxx11::basic_string<char> >, std::allocator<std::pair<const std::__cxx11::basic_string<char>, int> > >::iterator'} has no member named 'first'
   37 |     else cout << A.begin().first << endl;
      |                            ^~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
#define inf 10e17
#define rep(i, n) for(long long i=0; i<n; i++)
#define repr(i, n, m) for(long long i=m; i<n; i++)
#define mod 1000000007
#define sorti(x) sort(x.begin(), x.end())
#define sortd(x) sort(x.begin(), x.end(), std::greater<long long>())
#define debug(x) std::cerr << (x) << std::endl;
#define roll(x) for (auto&& itr : x) { cerr << (itr) << " "; }

template<class T>
inline void chmax(T &ans, T t) { if (t > ans) ans = t; }

template<class T>
inline void chmin(T &ans, T t) { if (t < ans) ans = t; }

int main() {
  string s, t;
  cin >> s >> t;
  
  auto lens = s.size();
  auto lent = t.size();
  
  if (lent > lens) {
    cout << "UNRESTORABLE" << endl;
    return 0;
  }
  
  string ans = "";
  for (int i = 0; i <= lens - lent; ++i) {
    string tmp = s;
    // ? だったらなんでもおｋ
    bool flag = true;
    for (int j = 0; j < lent; ++j) {
      auto idx = j + i;
      if (s[idx] != '?' && s[idx] != t[j]) {
        flag = false;
        break;
      } else {
        tmp[idx] = t[j];
      }
    }

    for (auto &it : tmp) {
      if (it == '?') it = 'a';
    }

    if (flag) {
      if (ans.empty()) ans = tmp;
      else chmin(ans, tmp);
    }
  }

  if (ans.empty()) {
    cout << "UNRESTORABLE" << endl;
  } else {
    cout << ans << endl;
  }
}


}

Compiler output:
a.cc:65:1: error: expected declaration before '}' token
   65 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;

int main()
{
        bool matched = false;
        string SS, T; cin >> SS >> T;
        int slen = SS.length();
        int tlen = T.length();
        if (slen < tlen) {
                cout << "UNRESTORABLE" << endl;
                exit(0);
        }
        for (int i = 0; i < slen; ++i) {
                string tmp = SS.substr(i, tlen);
                if (tmp.length() < tlen) continue;
                bool match = true;
                for (int j = 0; j < tlen; ++j) {
                        if (tmp[j] != '?' && tmp[j] != T[j]) {
                                match = false;
                                break;
                        }
                }
                if (match) {
                        matched = true;
                        SS.replace(i, tlen, T);
                }
        }
        for (int i = 0; i < slen; ++i) {
                if (SS[i] == '?') SS[i] = 'a';
        }
        if (matched)
                cout << SS << endl;
        else
                cout << "UNRESTORABLE" << endl;

}
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;

int main()
{
        bool matched = false;
        string SS, T; cin >> SS >> T;
        int slen = SS.length();
        int tlen = T.length();
        if (slen < tlen) {
                cout << "UNRESTORABLE" << endl;
                exit(0);
        }
        for (int i = 0; i < slen; ++i) {
                string tmp = SS.substr(i, tlen);
                if (tmp.length() < tlen) continue;
                bool match = true;
                for (int j = 0; j < tlen; ++j) {
                        if (tmp[j] != '?' && tmp[j] != T[j]) {
                                match = false;
                                break;
                        }
                }
                if (match) {
                        matched = true;
                        SS.replace(i, tlen, T);
                }
        }
        for (int i = 0; i < slen; ++i) {
                if (SS[i] == '?') SS[i] = 'a';
        }
        if (matched)
                cout << SS << endl;
        else
                cout << "UNRESTORABLE" << endl;

}


Compiler output:
a.cc:45:5: error: redefinition of 'int main()'
   45 | int main()
      |     ^~~~
a.cc:6:5: note: 'int main()' previously defined here
    6 | int main()
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
    string S;
    string T;
    cin >> S >> T;
    for(int i = 0; i < S.size(); i++) {
        if(i+T.size() >= S.size()) {
            break;
        }
        bool ok = true;
        for(int j = 0; j < T.size(); j++) {
            if(S[i+j] != '?' && T[j] != S[i+j]) {
                ok = false;
                break;
            }
        }
        if(ok) {
            for(int k = 0; k < S.size(); k++) {
                if(k == i) {
                    cout << T;
                    k+=T.size()-1;
                }
                else {
                    if(S[k] == '?') {
                        cout << 'a';
                    }
                    else {
                        cout << S[k];
                    }
            }
            cout << endl;
            return 0;
        }
    }
    cout << "UNRESTORABLE" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:37:2: error: expected '}' at end of input
   37 | }
      |  ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, srt, end) for (long long i = (srt); i < (long long)(end); i++)
#define VL vector<ll>
#define VS vector<string>
#define VB vector<bool>
#define VP vector<pair<ll,ll>>
#define VVL vector<vector<ll>>
#define VVP vector<vector<pair<ll,ll>>>
#define PL pair<ll,ll>
#define ALL(v) (v).begin(), (v).end()

string S, T;
vector<string> v;
 
int main() {
    cin.tie(0); ios::sync_with_stdio(false);
    cin >> S >> T;
    rep(i, S.size()-T.size()+1) {
        bool flag = true;
        rep(j, T.size()) {
            if (S[i+j]=='?') continue;
            else flag &= S[i+j]==T[j];
        }
        if (flag) {
            string s = "";
            rep(j, S.size()) {
                if (i<=j && j<i+T.size()) s += T[j-i];
                else {
                    if (S[j]=='?') s += "a";
                    else s += S[j];
                }
            }
            v.push_back(s);
        }
    }
    //sort(v.begin(), v.end());
    if (v.size()==0) cout << "UNRESTORABLE" << endl;
    else cout << v[0] << endl;
    return 0;
}

Compiler output:
a.cc:20:31: error: macro "rep" requires 3 arguments, but only 2 given
   20 |     rep(i, S.size()-T.size()+1) {
      |                               ^
a.cc:4:9: note: macro "rep" defined here
    4 | #define rep(i, srt, end) for (long long i = (srt); i < (long long)(end); i++)
      |         ^~~
a.cc:22:24: error: macro "rep" requires 3 arguments, but only 2 given
   22 |         rep(j, T.size()) {
      |                        ^
a.cc:4:9: note: macro "rep" defined here
    4 | #define rep(i, srt, end) for (long long i = (srt); i < (long long)(end); i++)
      |         ^~~
a.cc:28:28: error: macro "rep" requires 3 arguments, but only 2 given
   28 |             rep(j, S.size()) {
      |                            ^
a.cc:4:9: note: macro "rep" defined here
    4 | #define rep(i, srt, end) for (long long i = (srt); i < (long long)(end); i++)
      |         ^~~
a.cc: In function 'int main()':
a.cc:20:5: error: 'rep' was not declared in this scope
   20 |     rep(i, S.size()-T.size()+1) {
      |     ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  string S,T;
  cin>>S>>T;
  int N=S.size();
  int K=T.size();
  bool flag=false;
  for(int i=0;i<N-K;i++){
    string SS=S.substr(i,K);
    bool flag2=true;
    for(int j=0;j<K;j++){
      if(SS.at(j)!='?'&&SS.at(j)!=T.at(j)){
        flag2=false;
        break;
      }
    }
    if(flag2){
      flag=true;
      for(int j=0;j<K;j++){
        S.at(i+j)=T.at(j);
      }
    }
  }
  if(flag==false){
    cout<<"UNRESTORABLE"<<endl;
  }
  else{
    for(int i=0;i<N;i++){
      if(S.at(i)=='?'){
        S.at(i)=a;
      }
    }
    cout<<S<<endl;
  }
}

  
        
    

Compiler output:
a.cc: In function 'int main()':
a.cc:31:17: error: 'a' was not declared in this scope
   31 |         S.at(i)=a;
      |                 ^
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(ll i=0;i<(n);i++)
typedef long long ll;
using namespace std;
string s, t;
bool a = true;

int main(){
    cin >> s >> t;
    int n = s.length();
    int m = t.length();
    if (m > n) {
        cout << "UNRESTORABLE" << endl;
        return 0;
    }
    for(int i=n-m;i>0;i--]){
        int ans =0;
        if(s[i]==t[0] || s[i] == '?'){
            for(int j=1; j<m;i++){
                if(s[j+i]==t[j] || s[j+i]=='?'){
                    s[j+i] = t[j];
                    ans += 1;
                }
                if(ans== m){
                    a = true;
                    break;
                }
            }
        }
    }
    if (a){
        rep(i,n){
            if(s[i]=='?') s[i] = 'a';
        }    
        cout << s << endl;  
    }
    else cout << "UNRESTORABLE" << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:26: error: expected ')' before ']' token
   16 |     for(int i=n-m;i>0;i--]){
      |        ~                 ^
      |                          )
a.cc:16:26: error: expected primary-expression before ']' token
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(ll i=0;i<(n);i++)
typedef long long ll;
using namespace std;
string s, t;
bool a = false;

int main(){
    cin >> s >> t;
    int n = s.length();
    int m = t.length();
    if (m > n) {
        cout << "UNRESTORABLE" << endl;
        exit();
    }
    rep(i,n-m){
        int ans =0;
        if(s[i]==t[0] || s[i] == '?'){
            for(int j=1; j<m;i++){
                if(s[j+i]==t[j] || s[j+1]=='?'){
                    s[j+1] = t[j];
                    ans += 1;
                }
                if(ans== m){
                    a = true;
                    break;
                }
            }
        }
    }
    if (a){
        rep(i,n){
            if(s[i]=='?') s[i] = 'a';
        }    
        cout << s << endl;  
    }
    else cout << "UNRESTORABLE" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:13: error: too few arguments to function 'void exit(int)'
   14 |         exit();
      |         ~~~~^~
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:42,
                 from a.cc:1:
/usr/include/stdlib.h:756:13: note: declared here
  756 | extern void exit (int __status) __THROW __attribute__ ((__noreturn__));
      |             ^~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(ll i=0;i<(n);i++)
typedef long long ll;
using namespace std;
string s, t;
bool a = false;

int main(){
    cin >> s >> t;
    int n = s.length();
    int m = t.length();
    if (m > n) cout << "UNRESTORABLE" << endl; exit();
    rep(i,n-m){
        int ans =0;
        if(s[i]==t[0] || s[i] == '?'){
            for(int j=1; j<m;i++){
                if(s[j+i]==t[j] || s[j+1]=='?'){
                    s[j+1] = t[j];
                    ans += 1;
                }
                if(ans== m){
                    a = true;
                    break;
                }
            }
        }
    }
    if (a){
        rep(i,n){
            if(s[i]=='?') s[i] = 'a';
        }    
        cout << s << endl;  
    }
    else cout << "UNRESTORABLE" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:52: error: too few arguments to function 'void exit(int)'
   12 |     if (m > n) cout << "UNRESTORABLE" << endl; exit();
      |                                                ~~~~^~
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:42,
                 from a.cc:1:
/usr/include/stdlib.h:756:13: note: declared here
  756 | extern void exit (int __status) __THROW __attribute__ ((__noreturn__));
      |             ^~~~
Language: C++

#include<iostream>
#include<iomanip>
#include<cmath>
#include<string>
#include<vector>
#include<list>
#include<algorithm>
#include<map>
#include<set>
#include<queue>
#include<stack>
using namespace std;
typedef long long ll;
#define fi first
#define se second
#define mp make_pair
#define rep(i, n) for(int i=0;i<n;++i)
#define rrep(i, n) for(int i=n;i>=0;--i)
const int inf=1e9+7;
const ll mod=1e9+7;
const ll big=1e18;
const double PI=2*asin(1);

int main() {
    string S, T;
    cin>>S>>T;
    reverse(S.begin(), S.end());
    reverse(T.begin(), T.end());
    bool can = false;
    bool tmpcan;
    if(S.size()>=T.size(){
        for(int i=0;i<=S.size()-T.size();++i){
            if((S[i]==T[0]) || (S[i]=='?')){
                tmpcan = true;
                for(int j=0;j<T.size();++j){
                    if((S[i+j]!=T[j]) && (S[i+j]!='?')) tmpcan = false;
                }
                if(tmpcan == true){
                    can = true;
                    for(int j=0;j<T.size();++j){
                        S[i+j] = T[j];
                    }
                    break;
                }
            }
        }
    }
    if(can){
        for(int i=0;i<S.size();++i){
            if(S[i]=='?') S[i] = 'a';
        }
        reverse(S.begin(), S.end());
    }
    if(can) cout<<S<<endl;
    else cout<<"UNRESTORABLE"<<endl;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:31:26: error: expected ';' before '{' token
   31 |     if(S.size()>=T.size(){
      |                          ^
      |                          ;
a.cc:48:5: error: expected primary-expression before 'if'
   48 |     if(can){
      |     ^~
a.cc:47:6: error: expected ')' before 'if'
   47 |     }
      |      ^
      |      )
   48 |     if(can){
      |     ~~
a.cc:31:7: note: to match this '('
   31 |     if(S.size()>=T.size(){
      |       ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
using ll  = long long;
using vvl = vector<vector<ll>>;
using vl  = vector<ll>;
#define _GLIBCXX_DEBUG
#define acc_io cin.tie(0);ios::sync_with_stdio(false)
#define all(x) x.begin(),x.end()
#define rep(i,sta,end) for(ll i=sta;i<end;++i)
#define lcm(a,b) (a)/__gcd((a),(b))*(b)
#define pb push_back
#define DBG(a,b,c,d) cout<<a<<" "<<b<<" "<<c<<" "<<d<<" "<<endl
const ll MOD = 1000000007;
const double PI = acos(-1);  
//name[i]   -> vl  name(i)
//name[i][j]-> vvl name(i,vl(j))
//or-> ||
//map<int,int>mp

signed main(){
	acc_io;
	string s,t;
	cin>>s>>t;
	string p;
	p=s;
	int ng=0;
	for(int i=s.size()-t.size()+1,i>0,i--){
//		DBG(i,p,0,0);
		rep(j,0,t.size()){
			p.at(i+j)=t.at(j);
		}
//		DBG(i,p,0,1);
		rep(j,0,p.size()){
			if(s.at(j)!='?'&&p.at(j)!=s.at(j)){
				ng=1;
				break;
			}
		}
		if(ng){
			rep(j,0,t.size()){
				p.at(i+j)=s.at(i+j);
			}
		}
		else{
			break;
		}
//		DBG(i,p,0,2);
		ng=0;
	}
	if(s==p){
		p="UNRESTORABLE";
	}
	else{
		rep(i,0,p.size()){
			if(p.at(i)=='?') p.at(i)='a';
		}
	}
	cout<<p<<endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:40: error: expected ';' before '>' token
   27 |         for(int i=s.size()-t.size()+1,i>0,i--){
      |                                        ^
      |                                        ;
a.cc:27:40: error: expected primary-expression before '>' token
a.cc:27:46: error: expected ';' before ')' token
   27 |         for(int i=s.size()-t.size()+1,i>0,i--){
      |                                              ^
      |                                              ;
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define PI 3.14159265358979323846
#define int long long
constexpr int INF = numeric_limits<int>::max() / 2;
constexpr long long INFL = numeric_limits<long long>::max() / 2;
constexpr int MOD = 1000000007;
using Graph = vector<vector<int>>;



signed main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    string S,T;
    cin>>S>>T;
    int x=S.size();
    int y=T.size();
    string ans="UNRESTORABLE";
    if(y>x){
        cout << ans << endl;
        return 0:
    }
    for(int i=0;i<=x-y;i++){
        string s=S.substr(i,y);
        bool z=true;
        rep(j,y){
            if(s[j]=='?') continue;
            if(s[j]!=T[j]) {
                z=false;
                break;
            }
        }
        if(z){
            string b=S.substr(0,i);
            rep(k,b.size()){
                if(b[k]=='?') cout << 'a';
                else cout << b[k];
            }
            cout << T;
            b=S.substr(i+y);
            rep(k,b.size()){
                    if(b[k]=='?') cout << 'a';
                    else cout << b[k];
                }
            cout << endl;
            return 0;
        }
    }
    cout << ans << endl;


}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:17: error: expected ';' before ':' token
   24 |         return 0:
      |                 ^
      |                 ;
a.cc:24:17: error: expected primary-expression before ':' token
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
	string s,t;
	cin >> s >> t;
	const string z = "UNRESTORABLE";
	int sl=s.size(),tl=t.size();
	string k = "";
	vector<string> vs(50,"");
	for(int i=0;i<sl-tl+1;i++)
	{
		bool b = true;
		for(int j=0;j<tl;j++)
		{
			if(s.at(i+j)== '?')
			{
				continue;
			}
			else if(s.at(i+j)==t.at(j))
			{
			 	continue;
			}
			else
			{
				b = false;
			}
		}
		if(b==true)
		{
			string ss=s;
			for(int j=0;j<sl;j++)
			{
				if(ss.at(j)=='?')
				{
					ss.at(j)='a';
				}
			}
			vs.at(i)=ss;
		}
	}
	sort(vs.begin(),vs.end());
	for(int i=0;i<50;i++)
	{
		k = vs.at(i)
		if(k!="")
		{
			break;
		}
	}
	if(k=="")
	{
		k = z;
	}
    cout << k << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:45:29: error: expected ';' before 'if'
   45 |                 k = vs.at(i)
      |                             ^
      |                             ;
   46 |                 if(k!="")
      |                 ~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

 
int main() {
    string s,t;
    cin>>s>>t;

    if(s.length()<t.lngth())cout<<"UNRESTORABLE"<<endl;

    reverse(s.begin(),s.end());
    reverse(t.begin(),t.end());

    //s,tも使うので&
    auto check=[&](int i){
        rep(j,t.length()){
            if(s[i+j]!='?'&&s[i+j]!=t[j])return 0;
        }
        return 1;
    };

    

    for(int i=0;i<s.length()-t.length();i++){
        if(check(i)){
            rep(j,t.length()){
                s[i+j]=t[j];
            }
            rep(j,s.length()){
                if(s[j]=='?')s[j]='a';
            }
            reverse(s.begin(),s.end());
            cout<<s<<endl;
            return 0;
        }
    }


    cout<<"UNRESTORABLE"<<endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:21: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'lngth'; did you mean 'length'?
   11 |     if(s.length()<t.lngth())cout<<"UNRESTORABLE"<<endl;
      |                     ^~~~~
      |                     length
Language: C++

    #include<bits/stdc++.h>
    using namespace std;
    int main(){
		string s,t;
		int b=-1;
		cin>>s>>t;
		if(s.size()<t.size){
			cout<<"UNRESTORABLE"<<endl;
			return(0);
		}
		for(int i=0;i<=s.size()-t.size();i++){
			int a=0;
			for(int j=0;j<t.size();j++){
				if(s[i+j]=='?' || s[i+j]==t[j])
					a++;
			}
			if(t.size()==a){
				b=i;
			}
		}
		if(b==-1){
			cout<<"UNRESTORABLE"<<endl;
		}
		else{
			for(int j=0;j<t.size();j++){
				s[j+b]=t[j];
			}
			for(int i=0;i<s.size();i++){
				if(s[i]=='?'){
					cout<<"a";
				}
				else{
					cout<<s[i];
				}
			}
		}
		cout<<endl;
      return(0);
	}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:31: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
    7 |                 if(s.size()<t.size){
      |                             ~~^~~~
      |                                   ()
Language: C++

#include <iostream>
#include <vector>
#include <string>
#include <math.h>
#include <stack>
#include <queue>
#include <map>
#include <set>
using namespace std;
#define PI 3.14159265359
#define rep(i,n) for(int i=0; i<n; ++i)
#define INF 1001001001

typedef pair<int, int> P;

const int MAX_N = 100000;
const int MAX_V = 1000000000;

int N;
int X[MAX_N];
int L[MAX_N];

void input() {
    cin >> N;
    rep(i,N) cin >> X[i] >> L[i];
}

P ps[MAX_N];

int solve() {
    rep(i,N) {
        ps[i] = P(X[i] + L[i], X[i] - L[i]);
    }
    sort(ps, ps+N);
    int cur = -MAX_V;
    int ans = 0;
    rep(i, N) {
        if (cur <= ps[i].second) {
            ans++;
            cur = ps[i].first;
        }
    }
    return ans;
}


int main() {
    string s, t;
    cin >> s >> t;
    int sn = s.size(), tn = t.size();

    int sub = -1;
    for(int i=0; i<sn-tn+1; ++i) {
        int ptr;
        for(ptr=0; ptr<tn; ++ptr) {
            if (!(s[i+ptr]==t[ptr] || s[i+ptr] == '?')) break;
        }
        if (ptr == tn) sub = i;
    }

    if (sub == -1) {
        cout << "UNRESTORABLE" << endl;
        return 0;
    }

    for(int i=0; i<tn; ++i) s[sub+i] = t[i]; 
    for(int i=0; i<sn; ++i) {
        if (s[i] == '?') s[i] = 'a';
    }

    cout << s << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int solve()':
a.cc:34:5: error: 'sort' was not declared in this scope; did you mean 'sqrt'?
   34 |     sort(ps, ps+N);
      |     ^~~~
      |     sqrt
Language: Java

import java.util.Scanner;

public class　Main{
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		
		String sd = scan.next();
		String t = scan.next();
		scan.close();
		
		for(int i = 0; i < sd.length(); i++) {
			for(int j = 0; j < t.length() && i+j < sd.length(); j++) {
				if(sd.charAt(i+j)!=t.charAt(j) && sd.charAt(i+j)!='?') break;
				
				if(j == t.length()-1) {
					System.out.println(makeS(sd,t,i));
					return;
				}
			}
		}
		
		System.out.println("UNRESTORABLE");
	}

	public static String makeS(String sd, String t, int i) {
		System.out.println(t);
		
		char[] ans = new char[sd.length()];
		for(int j = 0; j < i; j++)
			ans[j] = sd.charAt(j) == '?' ? 'a' : sd.charAt(j);
		
		for(int j = 0; j < t.length(); j++) 
			ans[i+j] = t.charAt(j);
		
		for(int j = t.length()+i; j < sd.length(); j++)
			ans[j] = sd.charAt(j) == '?' ? 'a' : sd.charAt(j);
		
		return new String(ans);
	}
}


Compiler output:
Main.java:3: error: illegal character: '\u3000'
public class?Main{
            ^
1 error
Language: C++

from sys import stdin

Sp = stdin.readline().rstrip()
T =  stdin.readline().rstrip()


N = len(Sp)
M = len(T)

def check_feasibility(S, T, i):
    S_temp = S[i:i+M]
    index=0
    for j in range(M):
        if S_temp[j]=="?" or S_temp[j]==T[j]:
            index+=1
            continue
        else:
            break
    if index==len(T):
        return 1
    else:
        return 0

pos=-1
for i in range(N-M+1):
    is_ok = check_feasibility(Sp, T, i)
    if is_ok:
        pos=i
        
if pos==-1:
    print("UNRESTORABLE")
else:
    new_s = Sp[:pos] + T + Sp[pos+M:]
    new_s = new_s.replace("?","a")
    print(new_s)

Compiler output:
a.cc:1:1: error: 'from' does not name a type
    1 | from sys import stdin
      | ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
    string s,t;
    cin >> s >> t;
    string tes;
    bool flag;
    int num = s.size()-t.size();
    for(int i=0;i<=num;i++){
        flag = true;
        tes = s.substr(num-i,t.size());
        for(int j=0;j<t.size();j++){
            if(tes[j]!=t[j]&&tes[j]!='?')flag = false;
        }
        if(flag){
            for(int k=0;k<s.size();){
                if(k==num-i){
                    cout << t;
                    k += t.size();
                }
                else{
                    if(s[k]=='?') cout << 'a';
                    else cout << s[k];
                    k++;
                }
            }
        cout << endl;
        return 0;
        }
    }
    COUT("UNRESTORABLE");
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:5: error: 'COUT' was not declared in this scope
   31 |     COUT("UNRESTORABLE");
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

const int INF = 1e9;
const int MOD = 1e9+7;
const ll LINF = 1e18;

#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) for(int i=0;i<(n);++i)
#define REPR(i,n) for(int i=n;i>=0;i--)
#define ALL(v) (v.begin(),v.end())
#define COUT(x) cout<<(x)<<endl

int main(){
    string s,t;
    cin >> s >> t;
    string tes;
    bool flag;
    bool ans = false;
    int index;
    int num = s.size()-t.size();
    for(int i=0;i<=num;i++){
        flag = true;
        tes = s.substr(num-i,t.size());
        for(int j=0;j<t.size();j++){
            if(tes[j]!=t[j]&&tes[j]!='?')flag = false;
        }
        count++;
        if(flag){
            index = num-i;
            ans = true;
            break;
        }
    }
    if(!ans){
        COUT("UNRESTORABLE");
        return 0;
    }
    for(int i=0;i<s.size();){
        if(i==index){
            cout << t;
            i+=t.size();
        }
        else{
            if(s[i]=='?'){
                cout << 'a';
                i++;
            }
            else{
                cout << s[i];
                i++;
            }
        }
    }
    cout << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:14: error: no post-increment operator for type
   29 |         count++;
      |              ^~
Language: C++

#include <iostream>
#include <math.h>
#include <string>
#include <sstream>

using namespace std;

int MAX_S = 50, MAX_T = 50, pos=0;
string S2, T;

int main(){
    cin >> S2 >> T;
    int s_size = (int)(S2.length());
    int t_size = (int)(T.length());
    if(s_size>=t_size){
        string S = S2;
        string S3 = S;
        //cout << "t_size=" << t_size  <<endl;
        for(int i=0;i+t_size-1<s_size;i++){
            S = S2;
            int count = 0;
            int k = 0;
            for(int j=i;j<i+t_size;j++){
                
                //cout << S2[j] << " " << T[k] << " k=" << k << " j=" << j<<" count=" << count << endl;
                if(S2[j] != T[k] && S2[j] !='?'){
                    k++;
                    break;
                } 
                else {
                    //S.erase(i, 1);
                    char *t = &T[k];
                    S.replace(j, 1, t); //
                    count++;
                    k++;
                }
            }
            if(count == t_size){
                pos = 1;
                break;
            }
            count = 0;
        }
    }
    //for(int i=0;i<s_size;i++) cout << S[i];
    //cout << endl;
    if(!pos)cout << "UNRESTORABLE" << endl;
    else{
        for(int i=0;i<s_size;i++){
            if(S[i]=='?'){
                S.replace(i, 1, "a");
            }
        }
        for(int i=0;i<s_size;i++) cout << S[i];
        cout << endl;
    }
    

}

Compiler output:
a.cc: In function 'int main()':
a.cc:50:16: error: 'S' was not declared in this scope
   50 |             if(S[i]=='?'){
      |                ^
a.cc:54:43: error: 'S' was not declared in this scope
   54 |         for(int i=0;i<s_size;i++) cout << S[i];
      |                                           ^
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;
int main() {
    string s, t; cin >> s >> t;
    int n = s.size(), m = t.size();
    vector<string> ans;
    rep(i, n) {
        string res = s;
        bool ok = false;
        rep(j, m) {
            if(i+j >= n) break;
            if(s[i+j]==t[j])
            else if(s[i+j]=='?') {
                res[i+j] = t[j];
            }else break;
            if(j==m-1) ok = true;
        }
        if(ok){
            rep(i, n) if(res[i]=='?') res[i] = 'a';
            ans.push_back(res);
        }
    }
    sort(ans.begin(), ans.end());
    if(ans.size() > 0) {
        cout << ans[0];
    }
    else
    cout << "UNRESTORABLE";
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:13: error: expected primary-expression before 'else'
   16 |             else if(s[i+j]=='?') {
      |             ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define REP(i, n) for(int i = 0; i < n; i++)
#define COUT(x) cout<<(x)<<endl
#define dump(x)  cout << #x << " = " << (x) << endl;
using ll = long long;
using P = pair<int,int>;
using Graph = vector<vector<int>>;
using M = map<int,int>;
using PQ = priority_queue<int>;
using PQG = priority_queue<int, vector<int>, greater<int>>;
const int INF = 1e9;
const int MOD = 1e9+7;
const ll LINF = 1e18;

int main() {
  string s,t,ans = "~";
  cin >> s >> t;

  auto f = [&](int x) {
    string ss = "";
    REP(i,s.size()) {
      if (i >= x && i-x < t.size()) {
        if (s[i] != '?' && s[i] != t[i-x]) return;
        ss.push_back(t[i-x]);
      } else {
        ss.push_back(s[i] == '?' ? 'a' : s[i]);
      }
    }
    ans = min(ans,ss);
  };

  REP(i,s.size() - (t.size()-1)) f(i)
  ans != "~" ? COUT(ans) : COUT("UNRESTORABLE");
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:38: error: expected ';' before 'ans'
   33 |   REP(i,s.size() - (t.size()-1)) f(i)
      |                                      ^
      |                                      ;
   34 |   ans != "~" ? COUT(ans) : COUT("UNRESTORABLE");
      |   ~~~
Language: C++

string S,T;
int start;

int main(){
  cin >> S >> T;
  int N = S.size();
  int M = T.size();
  for (int i = 0;i < N - M + 1;i++){
    if (S[i] == T[0] || S[i] == '?'){
      for (int j = 1;j < M;j++){
        if (S[i+j] != T[i] && S[i+j] != '?'){
          break;
        }
      }
      found = true;
      start = i;
    }
  }
  for(int i = 0;i<start-1;i++){
    if (S[i] == '?'){
      S[i] = 'a';
    }
  }
  for(int i = start;i<start + M;i++){
    S[start+i] = T[i];
  }
  for(int i = start + M;i<N;i++){
    if (S[i] == '?'){
      S[i] = 'a';
    }
  }
  if (found == false){
    S = "UNRESTORABLE";
  }
  cout << S << endl;
}

Compiler output:
a.cc:1:1: error: 'string' does not name a type
    1 | string S,T;
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> S >> T;
      |   ^~~
a.cc:5:10: error: 'S' was not declared in this scope
    5 |   cin >> S >> T;
      |          ^
a.cc:5:15: error: 'T' was not declared in this scope
    5 |   cin >> S >> T;
      |               ^
a.cc:15:7: error: 'found' was not declared in this scope
   15 |       found = true;
      |       ^~~~~
a.cc:32:7: error: 'found' was not declared in this scope
   32 |   if (found == false){
      |       ^~~~~
a.cc:35:3: error: 'cout' was not declared in this scope
   35 |   cout << S << endl;
      |   ^~~~
a.cc:35:16: error: 'endl' was not declared in this scope
   35 |   cout << S << endl;
      |                ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define REP(i,n) for(int i=0; i<(n); i++)
#define REP2(i,x,n) for(int i=x; i<(n); i++)
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
int main()
{
	string S, T;
	cin >> S>>T;

	int slen = S.size();
	int tlen = T.size();
	if(slen<tlen){
		cout << "UNRESTORABLE" << endl;
		return 0;
	}

	int l = slen-tlen+1;
	vector<string> cand;
	for (int i = 0; i < l; i++){
		//cout << i<<" " << l <<" "<<S[i] << endl;
		bool flg = true;
		bool flg2=false;
		REP(j, tlen){
			if(S[i+j]==T[j]){
				flg2=true;
				continue;
			}
			else if(S[i+j]=='?') continue;
			else {
				flg=false;
				break;
			}
			//cout << S[i+j]<<" "<<T[j] <<" "<<flg<< endl;
		}
		//cout << flg <<" "<<flg2 << endl;
		
		if(flg&flg2){
			string tmps = S;
			REP(j, tlen) tmps[i+j]=T[j];
			REP(j, slen) {
				if(tmps[j]=='?') tmps[j]='a';
			}
			cand.push_back(tmps);
		}
		
	}
	if(cand.size==0) {
				cout << "UNRESTORABLE" << endl;
		return 0;
	}
	sort(cand.begin(), cand.end());

	//for(auto x:cand) cout << x << endl;
	cout << cand[0] << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:50:17: error: invalid use of member function 'std::vector<_Tp, _Alloc>::size_type std::vector<_Tp, _Alloc>::size() const [with _Tp = std::__cxx11::basic_string<char>; _Alloc = std::allocator<std::__cxx11::basic_string<char> >; size_type = long unsigned int]' (did you forget the '()' ?)
   50 |         if(cand.size==0) {
      |            ~~~~~^~~~
      |                     ()
Language: C

#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <utility>
#include <string>

using namespace std;

int main() {
	string s, t;
	cin >> s >> t;

	string s2 = s;
	for (int i = 0; i < s.size(); i++) {
		if (s2[i] == '?') {
			s2[i] = 'a';
		}
	}

	string ans(99, 'z');
	for (int i = 0; i <= s.size() - t.size(); i++) {
		bool ok = true;
		for (int j = 0; j < t.size(); j++) {
			if (s[i+j] != '?' && s[i+j] != t[j]) {
				ok = false;
				break;
			}
		}

		if (ok) {
			string u = s2.substr(0, i) + t + s2.substr(i + t.size());
			ans = min(ans, u);
		}
	}

	if (ans == string(99, 'z')) {
		ans = "UNRESTORABLE";
	}

	cout << ans << endl;
	return 0;
}


Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.