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

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

int main() {
  string S;
  cin >> S;
  long int N;
  N=S.length();
  vector<int> a(N);
  for(int i=0;i<N;i++){
    if(i==0){
      a.at(i)=1;
    }
    if(i==1){
      if(S.at(i-1)==S.at(i)){
        a.at(i)=1;
      }
      else{
        a.at(i)=2;
      }
    }
    if(i==2){
      if(S.at(i-2)==S.at(i-1)||S.at(i-1)==S.at(i)){
        a.at(i)=2;
      }
      else{
        a.at(i)=3
      }
    }
    else{
      if(S.at(i-1)==S.at(i)){
        a.at(i)=a.at(i-3)+2:
      }
      else{
        a.at(i)=a.at(i)+1;
      }
    }
  }
  cout << a.at(N-1)<<endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:27:18: error: expected ';' before '}' token
   27 |         a.at(i)=3
      |                  ^
      |                  ;
   28 |       }
      |       ~           
a.cc:32:28: error: expected ';' before ':' token
   32 |         a.at(i)=a.at(i-3)+2:
      |                            ^
      |                            ;
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	string a,s;
  	cin>>a>>s;
  	/*if(a.size()>4){
    	cout<<"red";
        return 0;
    }*/
  	else if(a.size()<4)
    {
      cout<<s;
      return 0;
    }
  	int sum=0;
      int x=1;
    for(int i=0;i<a.size();i++){
        sum+=(a[i]-'0')*x;
        x*=10;
    }
  	//sum+=(a[0]-'0')+(a[1]-'0')*10 + (a[2]-'0')*100+(a[3]-'0')*1000;
  	if(sum<3200)
    {
      cout<<"red";
    }
  else
    cout<<s;
  return 0;
  	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: 'else' without a previous 'if'
   10 |         else if(a.size()<4)
      |         ^~~~
Language: C++

// template version 1.12
using namespace std;
#include <iostream>
#include <bits/stdc++.h>

// varibable settings
#define infile "../test/sample-1.in"
#define int long long //{{{
const int INF=1e18;
const int MOD=1e9+7; //}}}

// define basic macro {{{
#define _overload3(_1,_2,_3,name,...) name
#define _rep(i,n) repi(i,0,n)
#define repi(i,a,b) for(int i=(int)(a);i<(int)(b);++i)
#define rep(...) _overload3(__VA_ARGS__,repi,_rep,)(__VA_ARGS__)
#define _rrep(i,n) rrepi(i,0,n)
#define rrepi(i,a,b) for(int i=(int)((b)-1);i>=(int)(a);--i)
#define rrep(...) _overload3(__VA_ARGS__,rrepi,_rrep,)(__VA_ARGS__)
#define each(i,a) for (auto&& i : a)
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define pb(a) push_back(a)
#define mp(a, b) make_pair(a, b)
#define uni(x) sort(all(x));x.erase(unique(all(x)),x.end())
#define ub upper_bound
#define lb lower_bound
#define posl(A, x) (lower_bound(all(A), x)-A.begin())
#define posu(A, x) (upper_bound(all(A),x)-A.begin())
template<class T> inline void chmax(T &a, const T &b) { if((a) < (b)) (a) = (b); }
template<class T> inline void chmin(T &a, const T &b) { if((a) > (b)) (a) = (b); }

typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef long double ld;
typedef pair<int,int> pii;
typedef tuple<int,int,int> iii;

template<typename T> using PQ = priority_queue<T, vector<T>, greater<T>>;
struct Fast { Fast(){ std::cin.tie(0); ios::sync_with_stdio(false); } } fast;

#if defined(PCM) || defined(LOCAL)
  #include "lib/dump.hpp"
#else
  #define dump(...) 42
  #define dump_1d(...) 42
  #define dump_2d(...) 42
#endif
//}}}

int solve(){
  string s;cin>>s;
  int n = sz(s);

  int (n==1) {
    cout << 1 << endl;
    return 0;
  }
  int (n==2) {
    if (s[0]==s[1]){
      cout << 1 << endl;
    }
    else{
      cout << 2 << endl;
    }
    return 0;
  }

  char now = s[0];
  int ans = 1;
  rep(i, 2, n){
    dump(i, now);
    if (s[i-1]==now) {
      i++;
      ans++;
      now = '$';
    }
    else{
      if (i==n-1 && s[i-1]==s[i]){
      }
      else{
        ans++;
        now = s[i-1];
      }
    }
    dump(i, ans);
  }
  cout << ans+1 << endl;

  return 0;
}

signed main() { //{{{
#ifdef INPUT_FROM_FILE
  std::ifstream in(infile);
  std::cin.rdbuf(in.rdbuf());
#endif
  solve();
  return 0;
} //}}}


Compiler output:
a.cc: In function 'long long int solve()':
a.cc:8:13: error: expected primary-expression before 'long'
    8 | #define int long long //{{{
      |             ^~~~
a.cc:56:3: note: in expansion of macro 'int'
   56 |   int (n==1) {
      |   ^~~
a.cc:8:13: error: expected primary-expression before 'long'
    8 | #define int long long //{{{
      |             ^~~~
a.cc:60:3: note: in expansion of macro 'int'
   60 |   int (n==2) {
      |   ^~~
Language: C

include<stdio.h>

int main(void){
	char S[200000], a='\0';
	int i, count;
	scanf("%s", S);
	for(i=0; S[i] == '\0'; i++){
		if(a != S[i]){
    		a = S[i];
    		count++;
    	}
    	else a += S[i];
	}
	printf("%d\n", count);
	return 0;
}

Compiler output:
main.c:1:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include<stdio.h>
      |        ^
Language: C

include<stdio.h>

int main(void){
	char S[200000], a='';
	int i, count;
	scanf("%s", S);
	for(i=0; S[i] == "\0"; i++){
		if(a != S[i]){
    		a = S[i];
    		count++;
    	}
    	else a += S[i];
	}
	printf("%d\n", count);
	return 0;
}

Compiler output:
main.c:1:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include<stdio.h>
      |        ^
main.c:4:27: error: empty character constant
    4 |         char S[200000], a='';
      |                           ^~
Language: C++

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

int main()
{
  string s;
  while(cin>>s){
   	int ans = 1, n = s.lenght();
	int i=0;
    while(i<n){
	  int j = i+1;
      int temp = i;
      while(j<n && s[j] != s[i]){
        ans = max(ans, j-temp);
        i = j++;
      }
    }
    cout<<ans<<endl;
  }
  return 0; 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:28: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'lenght'; did you mean 'length'?
    8 |         int ans = 1, n = s.lenght();
      |                            ^~~~~~
      |                            length
Language: Java

using System;
namespace AtCoder
{
public class Program
    {
        public static void Main(string[] args)
        {
       		string s = Console.ReadLine();
            int n = s.Length;
            int cnt = 1;
            string before_s = s.Substring(0,1);
          	int range = 1;
            for(int i = 1; i < n; i++)
            {
              	string ts = s.Substring(i-range+1,range);
           		//Console.WriteLine(before_s + " " +ts);
                if(!ts.Equals(before_s))
                {
                    before_s = ts;
                    cnt++;
                  	range = 1;
                }else{
                 	range++;
                }
                
	        }
            Console.WriteLine(cnt);
        }
	}
}

Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
using System;
^
  (use --enable-preview to enable unnamed classes)
Main.java:2: error: class, interface, enum, or record expected
namespace AtCoder
^
Main.java:30: error: class, interface, enum, or record expected
}
^
3 errors
Language: C++

//agc037_a_dp.cpp
//Sat Aug 17 22:04:24 2019

#include <iostream>
#include <string>
#include <queue>
#include <map>
#include <unordered_map>
#include <vector>
#include <algorithm>
#include <math.h>
#include <set>
#define INTINF 2147483647
#define LLINF 9223372036854775807
using namespace std;
using ll=long long;
typedef pair<int,int> P;

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

	dp[s.length()][2];
	for (int i=0;i<s.length();i++){
		dp[i][0] = 0;
		dp[i][1] = 0;
	}

	if (s[0]==s[1]){
		dp[0][0]=1;
		dp[0][1]=0;
		dp[1][0]=0;
		dp[1][1]=1;
	}else{
		dp[0][0]=1;
		dp[0][1]=0;
		dp[1][0]=2;
		dp[1][1]=1;
	}

	for (i=3;i<=s.length();i++){
		if (s[i]!=s[i-1]){
			s[i][0]=s[i-1][0]+1;
			s[i][1]=s[i-2][0]+1;
		}else{
			s[i][0]=s[i-1][1]+1;
			s[i][1]=s[i-2][0]+1;
		}
	}

	cout << max(s[s.length()-1][0],s[s.length()-1][1])<< endl;
//	printf("%.4f\n",ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:9: error: 'dp' was not declared in this scope
   23 |         dp[s.length()][2];
      |         ^~
a.cc:41:14: error: 'i' was not declared in this scope
   41 |         for (i=3;i<=s.length();i++){
      |              ^
a.cc:51:36: error: invalid types '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}[int]' for array subscript
   51 |         cout << max(s[s.length()-1][0],s[s.length()-1][1])<< endl;
      |                                    ^
a.cc:51:55: error: invalid types '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}[int]' for array subscript
   51 |         cout << max(s[s.length()-1][0],s[s.length()-1][1])<< endl;
      |                                                       ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
    string s;
    cin >> s;

    char old = s[0];

    long long count = 0;
    bool flag = false;

    long long temp_count = 1;

    for (int i = 1; i < s.size(); i++) {
        if (old == s[i]) {
            temp_count++;
        } else {
            count += temp_count / 3 * 2;
            int mod = temp_count % 3;

            if (mod > 0) {
                count++;
            } 

            if (! flag && mod == 2) {
                flag = trube;
            } else if (flag && mod == 2) {
                count++;
                flag = false;
            } else if (mod == 1) {
                flag = false;
            }

            temp_count = 1;
        }
        old = s[i];
    }

    count += temp_count / 3 * 2;
    int mod = temp_count % 3;
    if (mod > 0) {
        count++;
    }
    if (mod > 1) {
        if (flag) {
            count++;
        } 
    }

    cout << count;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:24: error: 'trube' was not declared in this scope
   26 |                 flag = trube;
      |                        ^~~~~
Language: C++

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

int main(){
      ios_base::sync_with_stdio(false); cin.tie(0);
	string s;cin>>s;
  	int k=1;
  int last=1;
  for(int i=1;i<s.size();){
  	if (last==2){
    	last=1;
      	++k;
        ++i;
    }else if (s[i]!=s[i-1]){
    	++j;
        ++i;
    }else{
    	++k;
        last=2;
        i += 2;
    }
  }
  cout << k;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:11: error: 'j' was not declared in this scope
   15 |         ++j;
      |           ^
Language: Java

import java.util.*;
public class Main(){
	public static void main(String[] args){
    	Scanner input = new Scanner(System.in);
      	String s = input.nextLine();
      	int cnt = 0;
      	char prev = s.charAt(0);
      	int ans = 0;
      	for(int i = 0 ;i < s.length() ; i++){
        	if(prev == s.charAt(i))
              	cnt++;
          	else{
            	ans += 2*(cnt/3);
              	if(cnt%3 != 0)
                  	ans++;
              	cnt = 1;
              	prev = s.charAt(i);
            }
        } 
      	ans += 2*(cnt/3);
        if(cnt%3 != 0)
            ans++;
      	System.out.println(ans);	
    }
}


Compiler output:
Main.java:2: error: '{' expected
public class Main(){
                 ^
1 error
Language: Java

import java*util*;
public class Main(){
	public static void main(String[] args){
    	Scanner input = new Scanner(System.in);
      	String s = input.nextLine();
      	int cnt = 0;
      	char prev = s.charAt(0);
      	int ans = 0;
      	for(int i = 0 ;i < s.length() ; i++){
        	if(prev == s.charAt(i))
              	cnt++;
          	else{
            	ans += 2*(cnt/3);
              	if(cnt%3 != 0)
                  	ans++;
              	cnt = 1;
              	prev = s.charAt(i);
            }
        } 
      	ans += 2*(cnt/3);
        if(cnt%3 != 0)
            ans++;
      	System.out.println(ans);	
    }
}


Compiler output:
Main.java:1: error: '.' expected
import java*util*;
           ^
Main.java:1: error: ';' expected
import java*util*;
            ^
Main.java:2: error: '{' expected
public class Main(){
                 ^
3 errors
Language: C

#include <stdio.h>

int r, c, p;

int main() {
  while((c = getchar_unlocked()) != '\n') {
    if (c == p) {
      p = 1;
    }
    else {
      r += 1;
      p = c == 1 ? 0 : c;
  }
  printf("%d\n", r);
}


Compiler output:
main.c: In function 'main':
main.c:15:1: error: expected declaration or statement at end of input
   15 | }
      | ^
Language: C++

using namespace std;
int main(){
      string S;
    string prev="";
    string buff="";
    cin >> S;
    long l = 0;
    long cnt = 0;

    for(long l = 0; l < S.size();l++){
        buff+=S[l];
        if(prev.compare(buff)==0){
            
        }else{
            prev=buff;
            cnt++;
            buff="";
        }
    }
    cout << cnt <<endl;
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:3:7: error: 'string' was not declared in this scope
    3 |       string S;
      |       ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | using namespace std;
a.cc:4:11: error: expected ';' before 'prev'
    4 |     string prev="";
      |           ^~~~~
      |           ;
a.cc:5:11: error: expected ';' before 'buff'
    5 |     string buff="";
      |           ^~~~~
      |           ;
a.cc:6:5: error: 'cin' was not declared in this scope
    6 |     cin >> S;
      |     ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:6:12: error: 'S' was not declared in this scope
    6 |     cin >> S;
      |            ^
a.cc:11:9: error: 'buff' was not declared in this scope
   11 |         buff+=S[l];
      |         ^~~~
a.cc:12:12: error: 'prev' was not declared in this scope
   12 |         if(prev.compare(buff)==0){
      |            ^~~~
a.cc:1:1: note: 'std::prev' is defined in header '<iterator>'; this is probably fixable by adding '#include <iterator>'
  +++ |+#include <iterator>
    1 | using namespace std;
a.cc:20:5: error: 'cout' was not declared in this scope
   20 |     cout << cnt <<endl;
      |     ^~~~
a.cc:20:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:20:19: error: 'endl' was not declared in this scope
   20 |     cout << cnt <<endl;
      |                   ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C++

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

/* #pragma */
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")


/*alias*/
#define F first
#define S second

#define y0 y3487465
#define y1 y8687969
#define j0 j1347829
#define j1 j234892
#define next asdnext
#define prev asdprev
#define itn int

/*template*/
template<class T>inline bool amax(T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }
template<class T>inline bool amin(T &a, const T &b) { if (b < a) { a = b; return 1; } return 0; }

/* func */
int32_t GCD(int32_t a, int32_t b){return b ? GCD(b, a%b) : a;}
int64_t GCD(int64_t a, int64_t b){return b ? GCD(b, a%b) : a;}
int32_t LCM(int32_t a, int32_t b){return a * b / GCD(a, b);}
int64_t LCM(int64_t a, int64_t b){return a * b / GCD(a, b);}

/*struct*/
struct aaa {
	aaa() {
		cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20);
	};
}aaaaaaa;

/* const */
constexpr int32_t INF = 1001001001;
constexpr int64_t LINF = 1001001001001001001ll;
constexpr int32_t MOD = 1e9 + 7; //10^9
constexpr int64_t EPS = 1e-9;
constexpr int32_t dx[] = { 1, 1, 0, -1, -1, -1, 0, 1 }, dy[] = { 0, 1, 1, 1, 0, -1, -1, -1 };
//constexpr int32_t dx[] = {1, 0, -1, 0}, dy[] = {0, 1, 0, -1};
//Counterclockwise from the 6o'clock direction
//Take the x-axis downward and the y-axis right


//g++ -std=c++14 -Wall --pedantic-errors -o template template.cpp
//g++ -std=c++14 -Wall --pedantic-errors template.cpp
//chcp 65001

/*global*/


//あとでスニペットint64_tがでないの直す
//#define int int64_t
signed main()
{
	string s; cin >> s;
	int sz = s.size()-1;//sizeのindex
	int ans{};

	if(s.size() == 1){
		cout << 1; return 0;
	}
	if(s.size() == 2){
		if(s[0] == s[1]){
			cout << 1; return 0;
		}
		if(s[0] != s[1]){
			cout << 2; return 0;
		}
	}

	while(true){

		if(s[j] != s[j+1]){
			break;
		}

		if(j+1 == sz){
			if(s.size() == 5){
				cout << 3; break;
			}
			
		}
		j++;
	}

	for(int i = 0; i < sz; ++i){//sz注意
		if(s[i] == s[i+1]){
			ans += 2;
			i += 2;//ループしたときにi==3
		}
		else if(s[i] != s[i+1]){
			ans += 1;
		}
	}

	if(s[sz] != s[sz-1]){
		ans+=1;
	}
	else{
		ans-=1;
	}
	cout << ans << endl;
}

//sizeのとこまで判定したら終了, size=6のとき5

Compiler output:
a.cc: In function 'int main()':
a.cc:78:22: error: 'j' was not declared in this scope
   78 |                 if(s[j] != s[j+1]){
      |                      ^
a.cc:82:20: error: 'j' was not declared in this scope
   82 |                 if(j+1 == sz){
      |                    ^
a.cc:88:17: error: 'j' was not declared in this scope
   88 |                 j++;
      |                 ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s;
	cin>>s;
	int len=s.length();
	string s1;string s2;
	s1=s[0];int t=1;int flag=0;int sum=0;
	while(1)
	{
		s2=s[t];
		while(s1==s2)
		{
			
			t++;
			if(len<t){
				flag=1;
				break;
			}
			s2+=s[t]
		}
		if (flag==1)break;
		t++;
		s1=s2;
		sum++;
	}
	cout<<sum;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:21:33: error: expected ';' before '}' token
   21 |                         s2+=s[t]
      |                                 ^
      |                                 ;
   22 |                 }
      |                 ~
Language: C++

#include"iostream"
#include<vector>
#include<math.h>
#include"algorithm"
#include"string"
using namespace std;
int main()
{
	string s;
	cin >> s;
	int count = 0;
	int y = 0;
	bool ya=false;
	int len = s.length();
	//vector<string>cont[100000];
	
	for (int i = 0; i < len; i++)
	{
		bool o = false;
		string g;
		if (i > 1)
		{
			if (s[i - 1]== s[i])
				o = true;

		}
		
		g = s[i + 1];
		 if ((s[i] == s[i + 1]) || o) {
			//cont[i+1]= s[i] + s[i + 1];
			//g += s[i] + s[i + 1];

			//cout << s[i] << s[i + 1] << endl;
			//cout << s[i + 2] << endl;
			count += 2;
			i += 2;
			y = i;
			ya = true;
		}
		
		 else if (ya&&o&&(s[i]!=s[i+1]))
		{
			count++;
			ya = false;
			//cout << "   1";
			//cout << s[i] << endl;



		}
		
		
		else if ((s[i] != s[i + 1]))
		 {
			 //cont[i] = s[i];
			 count++;
			// cout << s[i] << "    2" << endl;
		 }


	}
	cout << count;






Compiler output:
a.cc: In function 'int main()':
a.cc:62:23: error: expected '}' at end of input
   62 |         cout << count;
      |                       ^
a.cc:8:1: note: to match this '{'
    8 | {
      | ^
Language: C++

#include <bits/stdc++.h>
 
using namespace std;
 
int main(){
    char s[210000]; int c=0,d=2,count=1;
    int a[200001];
    a[1]=1;
    a[2]=1;
    cin >>s;
    for(long long int i=3;i<200001;i++){
      a[i]=d;
      if(i%3==2||i%3==0)d++;
}
c+=a[strlen(s)];
  for(long long int i=0;i<strlen(s);){
      if(strlen(s)%3==0){
       if(i==0) i=1;
        if(s[i]!=s[i+1]&&s[i]!=s[i-1]){
        if(s[i+1]!=s[i+2]) {c++;
        
        }
        }
        i+=3;
  }
        if(strlen(s)%3==1){
       if(i==0) i=1;
        if(s[i]!=s[i+1]&&s[i]!=s[i-1]){
        if(s[i+1]!=s[i+2]) {c++;
        
        }
        }
        i+=3;
  }
 
  if(strlen(s)%3==2){
       if(i==0) {
         if(s[i]!=s[i+1]&&s[i+1]!=s[i+2]){
           c++;
           i+=3;
         }
       }
        if(s[i]!=s[i+1]&&s[i]!=s[i-1]){
        if(s[i+1]!=s[i+2]) {c++;
        
        }
        }
        i+=3;
  }
 
  }
  

}
  if(strlen(s)%3==2&&s[strlen(s)-2]!=s[strlen(s)-3])  c++;
  
    cout << c;
}

Compiler output:
a.cc:55:3: error: expected unqualified-id before 'if'
   55 |   if(strlen(s)%3==2&&s[strlen(s)-2]!=s[strlen(s)-3])  c++;
      |   ^~
a.cc:57:5: error: 'cout' does not name a type
   57 |     cout << c;
      |     ^~~~
a.cc:58:1: error: expected declaration before '}' token
   58 | }
      | ^
Language: C++

import itertools
import numpy as np

from collections import Counter

S = list(input())

def split(a):
    if not a:
        return [[]]
    elif len(a) == 1:
        return [[a]]
    else:
        return [(a[:i], *sub_split) for i in range(1, len(a) + 1) for sub_split in split(a[i:])]


if __name__ == '__main__':
    A = list(range(len(S)))
    B = split(A)
    for i in range(len(S)-1, 0, -1):
        N = [x for x in B if len(x) == i]
        print(len(N))
        # print(N[0])


    print(N)


Compiler output:
a.cc:17:16: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
   17 | if __name__ == '__main__':
      |                ^~~~~~~~~~
a.cc:23:11: error: invalid preprocessing directive #print
   23 |         # print(N[0])
      |           ^~~~~
a.cc:1:1: error: 'import' does not name a type
    1 | import itertools
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using vvvll = vector<vvll>;
using vs = vector<string>;
using pll = pair<ll, ll>;
using vp = vector<pll>;
#define rep(i, n) for(ll i = 0; i < (n); i++)
#define repr(i, a, b) for(ll i = (a); i < (b); i++)
#define ALL(a) (a).begin(), (a).end()
#define SZ(x) ((ll)(x).size())
const ll MOD = 1000000007;
const ll INF = 100000000000000000LL;
inline ll GCD(ll a, ll b){ return b?GCD(b, a % b):a; }
inline ll LCM(ll a, ll b){ return a/GCD(a, b)*b; }
inline ll powint(ll x, ll y){ ll r=1; while(y){ if(y&1) r*=x; x*=x; y>>=1; } return r; }
inline ll powmod(ll x, ll y, ll m = MOD){ ll r=1; while(y){ if(y&1) r*=x; x*=x; r%=m; x%=m; y>>=1; } return r; }
template<class T>bool chmax(T &a, const T &b){ if(a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b){ if(b<a) { a=b; return 1; } return 0; }
#ifdef OJ_LOCAL
#include "dump.hpp"
#else
#define dump(...) ((void)0)
#endif

int main(){
    cin.tie(0); ios::sync_with_stdio(false);
    cout << fixed << setprecision(15);
    string s;
    cin >> s;
    ll n = SZ(s);
    ll i = 0;
    string tmp1; // prev
    string tmp2; // now
    ll ans1 = 0;
    bool f1 = 1;
    while(i < n){
        do{
            if(i >= n){
                f1 = 0;
            }
            tmp2 += s[i];
            i++;
        }while(tmp2 == tmp1);
        dump(tmp1, tmp2);
        tmp1 = tmp2;
        tmp2 = "";
        ans1++;
    }
    ll i = 2;
    string tmp1 = s.substr(0, 2); // prev
    string tmp2; // now
    ll ans2 = 0;
    bool f2 = 1;
    while(i < n){
        do{
            if(i >= n){
                f2 = 0;
            }
            tmp2 += s[i];
            i++;
        }while(tmp2 == tmp1);
        dump(tmp1, tmp2);
        tmp1 = tmp2;
        tmp2 = "";
        ans2++;
    }
    assert(!(f1 && f2 && ans1 != ans2));
    if(f1) cout << ans1 << endl;
    if(f2) cout << ans2 << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:55:8: error: redeclaration of 'll i'
   55 |     ll i = 2;
      |        ^
a.cc:37:8: note: 'll i' previously declared here
   37 |     ll i = 0;
      |        ^
a.cc:56:12: error: redeclaration of 'std::string tmp1'
   56 |     string tmp1 = s.substr(0, 2); // prev
      |            ^~~~
a.cc:38:12: note: 'std::string tmp1' previously declared here
   38 |     string tmp1; // prev
      |            ^~~~
a.cc:57:12: error: redeclaration of 'std::string tmp2'
   57 |     string tmp2; // now
      |            ^~~~
a.cc:39:12: note: 'std::string tmp2' previously declared here
   39 |     string tmp2; // now
      |            ^~~~
Language: C++

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

int main() {
	int ans=1;
	string s;
	cin >> s;
	int i = 0; 
	int n = 1;
	int m=s.size();

	while (i != m-2) {
		if (s.at(i) == s.at(i + 1)) {
			n++;
		}
		if (s.at(i) != s.at(i + 1)) {
			ans++;
		}
		i++;
	}

	
	cout << ans+foo(n) << endl;
}


int foo(int n) {
	return (2 * n + 1) / 3;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:21: error: 'foo' was not declared in this scope
   25 |         cout << ans+foo(n) << endl;
      |                     ^~~
Language: C++

//▕ ▔ ╲ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ╱ ▔ ▏
//┊ ╲ ┈ ╲ ╱ ▔ ▔ ▔ ▔ ▔ ╲ ╱ ┈ ╱ ┊
//┊ ┊ ╲ ┈ ╭ ╮ ┈ ┈ ┈ ╭ ╮ ┈ ╱ ┊ ┊
//┊ ┊ ╱ ┈ ╰ ╯ ┈ ▂ ┈ ╰ ╯ ┈ ╲ ┊ ┊
//┊ ┊ ▏ ╭ ╮ ▕ ━ ┻ ━ ▏ ╭ ╮ ▕ ┊ ┊
//┊ ┊ ╲ ╰ ╯ ┈ ╲ ▂ ╱ ┈ ╰ ╯ ╱ ┊ ┊


Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

//▕  ▔  ╲  ┊  ┊  ┊  ┊  ┊  ┊  ┊  ┊  ┊  ╱  ▔  ▏
//┊  ╲  ┈  ╲  ╱  ▔  ▔  ▔  ▔  ▔  ╲  ╱  ┈  ╱  ┊
//┊  ┊  ╲  ┈  ╭  ╮  ┈  ┈  ┈  ╭  ╮  ┈  ╱  ┊  ┊
//┊  ┊  ╱  ┈  ╰  ╯  ┈  ▂  ┈  ╰  ╯  ┈  ╲  ┊  ┊
//┊  ┊  ▏  ╭  ╮  ▕  ━  ┻  ━  ▏  ╭  ╮  ▕  ┊  ┊
//┊  ┊  ╲  ╰  ╯  ┈  ╲  ▂  ╱  ┈  ╰  ╯  ╱  ┊  ┊


Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

//▕▔╲┊┊┊┊┊┊┊┊┊╱▔▏
//┊╲┈╲╱▔▔▔▔▔╲╱┈╱┊
//┊┊╲┈╭╮┈┈┈╭╮┈╱┊┊
//┊┊╱┈╰╯┈▂┈╰╯┈╲┊┊
//┊┊▏╭╮▕━┻━▏╭╮▕┊┊
//┊┊╲╰╯┈╲▂╱┈╰╯╱┊┊

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include<bits/stdc++. h>
using namespace std;
int main() {
string s;
cin>>s;
int ans=0;
char l='$';
bool fl=false;
int i=0;
while(i<s.size()){
if(i && s[i-1]==s[i] && !fl) {
i+=2;
fl=true;
}else{
i++;
fl=false;
}
ans++;
} 
cout<<ans;
} 

Compiler output:
a.cc:1:9: fatal error: bits/stdc++. h: No such file or directory
    1 | #include<bits/stdc++. h>
      |         ^~~~~~~~~~~~~~~~
compilation terminated.
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++)
#define rep1(i,n) for(int i=1;i<(int)(n);i++)
#define fs first
#define sc second
typedef pair<ll, ll> l_l;
#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
  string s;
  cin>>s;
  vector<int>a(26);
  rep(i,s.size()){
  a[s[i]-'a']++;
  }
  sort(a.begin(),a.end());
  cout<<s.size()-a[0]<<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:24: error: expected primary-expression before '<' token
   23 |   cout<<s.size()-a[0]<<<endl;
      |                        ^
Language: C

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>

int main() {
	int i,j = 0,ans = 1;
  bool flag = false;
  char S[200000];
	scanf("%s", S);
  for (i = 1; S[i] != '\0'; i++) {
    if (S[i - 1] == S[i]) {
      j++;
    }
    else if (j != 0) {
      ans -= (j + 2) / 3;
      if ((j + 3) % 3 == 1) {
        if (flag) {
          ans++;
          flag = false;
        }
        else {
          flag = true;
        }
      }
      j = 0;
    }
    else {
      flag = false;
    }
    ans++;
  }
  if (j != 0) {
    ans -= (j + 2) / 3;
    if ((j + 3) % 3 == 1) {
      if (flag) {
        ans++;
        flag = false;
      }
      else {
        flag = true;
      }
    }
  }
  printf("%d", ans);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:3: error: unknown type name 'bool'
    6 |   bool flag = false;
      |   ^~~~
main.c:3:1: note: 'bool' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
    2 | #include<stdio.h>
  +++ |+#include <stdbool.h>
    3 | 
main.c:6:15: error: 'false' undeclared (first use in this function)
    6 |   bool flag = false;
      |               ^~~~~
main.c:6:15: note: 'false' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
main.c:6:15: note: each undeclared identifier is reported only once for each function it appears in
main.c:21:18: error: 'true' undeclared (first use in this function)
   21 |           flag = true;
      |                  ^~~~
main.c:21:18: note: 'true' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
Language: C++

    #include <bits/stdc++.h>
    using namespace std;
     
    int main() {
    	string s;
    	cin>>s;int n=s.size(),k=1,in=0;
    	for(int i=1;i<n;)
    	{
    	    if(s[i]==s[i-1]&&in==i-1&&i!=n-1)
    	    {
    	        k++;in=i;
    	        i+=2;
    	    }
    	    else 
    	    {
    	        if(i!=n-1||(i==n-1&&s[i]!=s[i-1]))
    	        k++;
    	        else
    	        {
    	            if(i-4==in1)
    	            {
    	                if(s[i]==s[i-2]&&s[i-1]==s[i-3])
    	                k--;
    	            }
    	        }
    	        in=i;
    	        i++;
    	    }
    	}cout<<k<<endl;
    	return 0;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:20:29: error: 'in1' was not declared in this scope; did you mean 'in'?
   20 |                     if(i-4==in1)
      |                             ^~~
      |                             in
Language: C++

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

using ll = long long;
using vi = vector<int>;

int func(int x){
	if( x%3 == 2) return x/3+1;
	return x/3;
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	string s;
	cin >> s;
	int n = s.size();
	vi v;
	int cnt = 1;
	for(int i = 1;i<n;i++){
		if(s[i] != s[i-1]){
			v.push_back(cnt);
			cnt = 1;
		}
		else cnt++;
	}
	v.push_back(cnt);
	int b = v.size();
	for(int i = 0;i<b;i++){
		res+= func(v[i]);
	}
	cnt = 0;
	for(int i = 0;i<b;i++){
		if( v[i] == 1){
			res -= cnt/2;
			cnt = 0;
		}
		if( v[i]%3 == 2){
			cnt++;
		}
	}
	res -= cnt/2;
	cout << n - res << endl;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:30:17: error: 'res' was not declared in this scope
   30 |                 res+= func(v[i]);
      |                 ^~~
a.cc:35:25: error: 'res' was not declared in this scope
   35 |                         res -= cnt/2;
      |                         ^~~
a.cc:42:9: error: 'res' was not declared in this scope
   42 |         res -= cnt/2;
      |         ^~~
Language: C++

#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <numeric>
#include <functional>
#include <cmath>
#include <queue>
#include <stack>
#include <string>

#define repd(i,a,b) for (int i=(a);i<(b);i++)
#define rep(i,n) repd(i,0,n)
typedef long long ll;

using namespace std;


int inputValue(){
    int a;
    cin >> a;
    return a;
};

void inputArray(int * p, int a){
    rep(i, a){
        cin >> p[i];
    }
};

void inputVector(vector<int> * p, int a){
    rep(i, a){
        int input;
        cin >> input;
        p -> push_back(input);
    }
}

template <typename T>
void output(T a, int precision) {
    if(precision > 0){
        cout << setprecision(precision)  << a << "\n";
    }
    else{
        cout << a << "\n";
    }
}

int main(int argc, const char * argv[]) {
    
  // source code
  string ss;
  cin >> ss;
  int vccount = 0;
  vector<string> vc;

  rep(i,ss.length())
  {
    vc.push_back(&ss[i]);
    if(vc.size() > 1 && (vc.at(vc.size() - 2) == string() + ss[i]))
    {
      if(i == ss.Length() - 1)
      {
        cout << vc.size() - 1;
        return;
      }
      else
      {
        vc.at(vc.size() - 1) = vc(vc.size() - 1) + ss[i + 1];
        i++;
      }
    }
  }
  cout << vc.size();
  return;
  
  
}


Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:62:18: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'Length'; did you mean 'length'?
   62 |       if(i == ss.Length() - 1)
      |                  ^~~~~~
      |                  length
a.cc:65:9: error: return-statement with no value, in function returning 'int' [-fpermissive]
   65 |         return;
      |         ^~~~~~
a.cc:69:34: error: no match for call to '(std::vector<std::__cxx11::basic_string<char> >) (std::vector<std::__cxx11::basic_string<char> >::size_type)'
   69 |         vc.at(vc.size() - 1) = vc(vc.size() - 1) + ss[i + 1];
      |                                ~~^~~~~~~~~~~~~~~
a.cc:75:3: error: return-statement with no value, in function returning 'int' [-fpermissive]
   75 |   return;
      |   ^~~~~~
Language: C++

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <map>
#include <cstdlib>
#include <algorithm>
#include <queue>
#include <stack>
#include <vector>
#define ll long long
using namespace std;
int read()
{
    register int a(0),p(1);register char ch=0;
    while((ch<'0'||ch>'9')&&ch!='-') ch=getchar();
    if(ch=='-') p=-1,ch=getchar();
    while(ch>='0'&&ch<='9') a=a*10+ch-48,ch=getchar();
    return a*p;
}
const int N=200100;
char a[N];
int book[N],ans,n;
int main()
{
	gets(a);n=ans=strlen(a);
	for(int i=0;i<n;i++) if(!book[a[i]-'a']) book[a[i]-'a']=1,--ans;
	printf("%d",ans);
    return 0;
}

Compiler output:
a.cc: In function 'int read()':
a.cc:15:18: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   15 |     register int a(0),p(1);register char ch=0;
      |                  ^
a.cc:15:23: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   15 |     register int a(0),p(1);register char ch=0;
      |                       ^
a.cc:15:42: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   15 |     register int a(0),p(1);register char ch=0;
      |                                          ^~
a.cc: In function 'int main()':
a.cc:26:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
   26 |         gets(a);n=ans=strlen(a);
      |         ^~~~
      |         getw
Language: C++

#include <bits/stdc++.h>
2
using namespace std;
3
 
4
int main() {
5
  string S;
6
  cin>>S;
7
  int count=0;
8
  int N=S.size();
9
  while(N>0){
10
    
11
    if(N==1){
12
      count++;
13
      break;
14
    }
15
    if(S.at(N-1)!=S.at(N-2)){
16
      S.pop_back();
17
    }
18
    else{
19
      S.pop_back();
20
      S.pop_back();
21
    }
22
    count++;
23
    N=S.size();
24
  }
25
  cout<<count<<endl;
26
}

Compiler output:
a.cc:2:1: error: expected unqualified-id before numeric constant
    2 | 2
      | ^
a.cc:4:1: error: expected unqualified-id before numeric constant
    4 | 3
      | ^
Language: Java

import java.util.*;

class Main{
  Scanner sc = new Scanner(System.in);
  int n = sc.nextInt();
  int m = sc.nextInt();
  List<Integer>[][] a = new ArrayList<>[n][m];
  for(int i=0;i<n*m;i++){
    int d=sc.nextInt();
    
  }
  for(int i=0;i<m;i++){
    for(int j=0;j<n;j++){//縦書き
      
    }
  }
}


Compiler output:
Main.java:7: error: cannot create array with '<>'
  List<Integer>[][] a = new ArrayList<>[n][m];
                                     ^
Main.java:8: error: illegal start of type
  for(int i=0;i<n*m;i++){
  ^
Main.java:8: error: > or ',' expected
  for(int i=0;i<n*m;i++){
                 ^
Main.java:8: error: <identifier> expected
  for(int i=0;i<n*m;i++){
                   ^
Main.java:8: error: <identifier> expected
  for(int i=0;i<n*m;i++){
                     ^
Main.java:12: error: illegal start of type
  for(int i=0;i<m;i++){
  ^
Main.java:12: error: > or ',' expected
  for(int i=0;i<m;i++){
                 ^
Main.java:12: error: <identifier> expected
  for(int i=0;i<m;i++){
                   ^
8 errors
Language: C++

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

int main() {
    string S;
    cin >> S;

    string preS = "A";
    string nowS;
    nowS = "";
    long count = 0;
    char alphabet = "";
    char prealpha = "";
    long alphabet_count = 0;
    for(int i = 0; i < S.size(); i++)
    {
        alphabet = S[i];
        nowS += alphabet;
//        cout <<  "now:" << nowS << endl;
        if(preS != nowS)
        {
//            cout <<  "pre:" << preS << "now:" << nowS << endl;
            preS = nowS;
            nowS = "";
            count++;
        }

    cout << count << endl;
    return 0;  

}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:21: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
   12 |     char alphabet = "";
      |                     ^~
      |                     |
      |                     const char*
a.cc:13:21: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
   13 |     char prealpha = "";
      |                     ^~
      |                     |
      |                     const char*
a.cc:31:2: error: expected '}' at end of input
   31 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: Java

import java.io.*;
import java.util.*;

class Game {
    public static void main(String[] args) throws Exception {
	//try{
	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        OutputStream outputStream = System.out;
    	PrintWriter out = new PrintWriter(outputStream);

        int i, n, m, c, k;

		String str = Integer.parseInt(br.readLine());    
        
      	int[] count = new int[27];
      	
      for(i=0;i<str.length();i++)
        	count[str.charAt(i)-'a']++;
      int sum=0;
      for(i=0;i<27;i++)
        if(count[i]!=0)
        	sum+=count[i];
      
      out.print(sum);
	
	out.flush();
	out.close();
	//}catch(Exception e){}
	}
}

Compiler output:
Main.java:13: error: incompatible types: int cannot be converted to String
		String str = Integer.parseInt(br.readLine());    
		                             ^
1 error
Language: C++

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

const int MOD=1000000007;

ll gcd(ll x, ll y) {
    if (y == 0)return x;
    return gcd(y, x % y);
}
ll lcm(ll x, ll y) {
    return x * y / gcd(x, y);
}

void solve(std::string S){
    ll cnt=0;
    string lhs, rhs;
    lhs = S[0];
    for (ll i = 1; i < S.length(); i++) {
        rhs = S[i];
        if ( lhs == rhs ) {
            rhs = rhs + S[i+1];
            i++;
        }
        lhs = rhs;
        cnt++;
    }
    if ( S[S.length()-1] == S[S.length()-2] ) {
        cnt--
    }
    cout << cnt << endl;
}

int main(){
    std::string S;
    std::cin >> S;
    solve(S);
    return 0;
}


Compiler output:
a.cc: In function 'void solve(std::string)':
a.cc:32:14: error: expected ';' before '}' token
   32 |         cnt--
      |              ^
      |              ;
   33 |     }
      |     ~
Language: C++

#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
char str[2000050];
int len,ans,nowlen=1,last,book[2000050],flag;
int main()
{
	gets(str+1);
	len=strlen(str+1);
	str[0]=':';
	last=len;
	while(str[last]==str[last-1])last--;
	last--;
	for(int i=1;i<=last;i++)
	{
		if(str[i]!=str[i-1])
		{
			ans++;
			nowlen=2;
			book[i]=1;
			flag=i;
			continue;
		}
		if(str[i]==str[i-1]&&book[i-1]>1)
		{
			ans++;
			nowlen=2;
			book[i]=1;
			flag=i;
			continue;
		}
		if(str[i]==str[i-1])
		{
			if(nowlen==1)
			{
				ans++;
				nowlen=2;
				book[i]=1;
				flag=i;
				continue;
			}
			if(nowlen==2)
			{
				ans++;
				nowlen=1;
				book[i]=book[i+1]=2;
				i++;
				flag=i;
				continue;
			}
		}
	}
	int rem=len-flag;
	if(rem%3==0)ans+=rem/3*2;
	else ans+=rem/3*2+1;
	printf("%d",ans);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    9 |         gets(str+1);
      |         ^~~~
      |         getw
Language: C++

#include<iostream>
using namespace std;
int main()
{
  string s;
  cin>>s;
  cout<<"無理不可能おわた"<<ENDL;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:29: error: 'ENDL' was not declared in this scope
    7 |   cout<<"無理不可能おわた"<<ENDL;
      |                             ^~~~
Language: C++

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

int main() {
  string s;
  cin >> s;
  int a = 1;
  bool b = 0;
  for(int i = 1; i < s.size(); i++){
    if(b){
      b = 0;
      continue;
    }
    else if(s.at(i-1) != s.at(i))
      a++;
    else{
      a++;
      b = 1;
    }
  cout << a << endl;    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:2: error: expected '}' at end of input
   21 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

#include <cstdlib>
#include <cstring>
#include <utility>
#include <numeric>
#include <complex>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <cassert>
#include <iostream>
#include <iterator>
#include <algorithm>
using namespace std;
typedef long long ll;
const double EPS = 1e-9;
typedef vector<int> vint;
typedef pair<int, int> pint;
#define inf 1e+9
#define rep(i, n) REP(i, 0, n)
#define ALL(v) v.begin(), v.end()
#define MSG(a) cout << #a << " " << a << endl;
#define REP(i, x, n) for(int i = x; i < n; i++)
template<class T, class C> void chmax(T& a, C b){ a>b?:a=b; }
template<class T, class C> void chmin(T& a, C b){ a<b?:a=b; }

int main (){
	cin.tie(0);
   	ios::sync_with_stdio(false);

    int n=0,k=0,ans=0,c=0;
	string s;
	cin >> s;

	rep(i,s.size()){
		if(s[i]!=s[i+1]){
			ans++;
			// if(k!=0){
			// 	ans++;
			// }
			n=k;
			k=0;
		}
		else{
			k++;
			if(n>0){
				ans++;
				n=0;
				k=0;
			}
			// else if(k>1){
			// 	ans++;
			// 	n=0;
			// 	k=0;
			// }
		}
	}

	cout << ans << endl;
}

Compiler output:
a.cc:16:9: error: 'vector' does not name a type
   16 | typedef vector<int> vint;
      |         ^~~~~~
Language: C++

//#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef pair<ll, ll> P;
typedef vector<int> VI;
const ll MOD = 1000000007;
#define REP(i, n) for(int i = 0; i < n; i++)
#define ALL(v) v.begin(), v.end()
int main() {
	string s;
	cin >> s;
	int ans = 0, flag = 0;
	for (int i = 0; i < s.length() - 1; i++) {
		if (s[i] != s[i + 1] || flag == 1) {
			flag = 0;
		}
		else {
			i++;
			flag = 1;
		}
		ans++;
	}
	if (flag == 0)
		ans++;
	if (s.length() >= 3) {
		if (s[s.length() - 3] == s[s.length() - 2] && s[s.length() - 2] == s[s.length() - 1])
			ans++;
	}
	cout << ans;
}

Compiler output:
a.cc:4:9: error: 'pair' does not name a type
    4 | typedef pair<ll, ll> P;
      |         ^~~~
a.cc:5:9: error: 'vector' does not name a type
    5 | typedef vector<int> VI;
      |         ^~~~~~
a.cc: In function 'int main()':
a.cc:10:9: error: 'string' was not declared in this scope
   10 |         string s;
      |         ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | //#include <bits/stdc++.h>
a.cc:11:9: error: 'cin' was not declared in this scope
   11 |         cin >> s;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | //#include <bits/stdc++.h>
a.cc:11:16: error: 's' was not declared in this scope
   11 |         cin >> s;
      |                ^
a.cc:29:9: error: 'cout' was not declared in this scope
   29 |         cout << ans;
      |         ^~~~
a.cc:29:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

#include <bits/stdc++.h>
#pragma GCC optimize("Ofast", "unroll-loops")
#define ll long long 
#define ull unsigned ll 
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define REP(i,n) for (int i=0;i<(n);i++)
#define REP1(i,n) for (int i=1;i<=(n);i++)
#define RREP(i,n) for (int i=(n)-1; i>=0; i--)
#define pii pair<int,int>
#define SZ(x) x.size()
#define ALL(x) x.begin(), x.end()
#define ull unsigned ll 
#define pb push_back
#define SQ(x) (x)*(x)
#define endl '\n'
using namespace std;

int main (){
	ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
	string s; cin>>s;
	int siz=s.size();
	int ans=0;
	string prev=s.substr(0,1);
	REP(i,siz){
		if (s.substr(i,1)!=prev) {
			ans++;
			prev=s.substr(i,1);
			continue;
		}
		prev=s.substr(i,2);
		if (i+1==n) break;
		i++;
		ans++;
	}
	cout<<ans<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:31:26: error: 'n' was not declared in this scope
   31 |                 if (i+1==n) break;
      |                          ^
Language: C++

#include "bits/stdc++.h"
using namespace std;
int main(){
  string s;
  cin >> s;
  vector<char> v;
  int n=s.size();
  for(int i=0;i<n;i++){ 
    char t=s[i];
    if(s[i]!=v.back()){
      v.push_back(s[i])
    }else{
      if(i=n-1) continue;
      t=t+s[i+1];
      i++;
    }
  }
  cout<<v.size()<<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:24: error: expected ';' before '}' token
   11 |       v.push_back(s[i])
      |                        ^
      |                        ;
   12 |     }else{
      |     ~
Language: C++

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

int main() {
  string s;
  cin >> s;
  int n=0,m=0;
  for (int i=0;i<size.at(s);i++){
      if(s[i]!=s[i+1]){
          n++;
      }
  }
  cout << m << endl;
  }


Compiler output:
a.cc: In function 'int main()':
a.cc:8:23: error: overloaded function with no contextual type information
    8 |   for (int i=0;i<size.at(s);i++){
      |                       ^~
Language: C

#include<stdio.h>
#include<string.h>

int main(){
    char s[200001];
    int i,d=0;
    int v[2000001][2];
    for(int i=0;i<200001;i++){
        v[i][0]=s[i];
        v[i][1]='\0';
    }
    scanf("%s",s);
    char u[200001]="";
    for(i=0;i<200001;i++){
        strcpy(u,strcat(u,v));
        if(s[i]=='\0'){
            break;
        }
        else if(strcmp(t,u)==0){
            continue;
        }
        else{
            d++;
        }
    }
    printf("%d",d);
}

Compiler output:
main.c: In function 'main':
main.c:15:27: error: passing argument 2 of 'strcat' from incompatible pointer type [-Wincompatible-pointer-types]
   15 |         strcpy(u,strcat(u,v));
      |                           ^
      |                           |
      |                           int (*)[2]
In file included from main.c:2:
/usr/include/string.h:149:70: note: expected 'const char * restrict' but argument is of type 'int (*)[2]'
  149 | extern char *strcat (char *__restrict __dest, const char *__restrict __src)
      |                                               ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
main.c:19:24: error: 't' undeclared (first use in this function)
   19 |         else if(strcmp(t,u)==0){
      |                        ^
main.c:19:24: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

# coding: utf-8
# Your code here!
S = input()
ans = 1
prev=S[0]
now = ""
temp=""
i = 1
if len(S) != 1:
    while(1):
        now=S[i]
        flg=False
        while(prev == now and i < len(S)-1):
            now += S[i+1]
            i+=1
        # print(i, prev, now)
        temp=prev
        prev = now
        i+=1
        ans+=1
        if i >= len(S):
            break
if temp == now:
    ans -= 1
print(ans)


Compiler output:
a.cc:1:3: error: invalid preprocessing directive #coding
    1 | # coding: utf-8
      |   ^~~~~~
a.cc:2:3: error: invalid preprocessing directive #Your
    2 | # Your code here!
      |   ^~~~
a.cc:16:11: error: invalid preprocessing directive #print
   16 |         # print(i, prev, now)
      |           ^~~~~
a.cc:3:1: error: 'S' does not name a type
    3 | S = input()
      | ^