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

#include<iostream>
using namespace std;

int main () {
  string S;
  cin >> S;
  string T;
  int i = S.length() - 1;
  if (S[0] != 'd' or S[0] != 'e'){
    cout << "NO\n";
  } else {
    while (S.length() > 0){
      int arr5[5] = S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i];
      int arr6[6] = S[i - 5] + S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i];
      int arr7[7] = S[i - 6] + S[i - 5] + S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i];
      if (arr5 == "dream"){
        S -= "dream";
        i -= 5;
      } else if (arr5 == "erase"){
        S -= "erase";
        i -= 5;
      } else if (arr7 == "dreamer"){
        S -= "dreamer";
        i -= 7;
      } else if (arr6 == "eraser"){
        S -= "eraser";
        i -= 6;
      } else {
        cout << "NO\n"; 
        return 0;
      } 
    }
    if (S.length() == 0){
      cout << "YES\n";
    }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:63: error: array must be initialized with a brace-enclosed initializer
   13 |       int arr5[5] = S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i];
a.cc:14:74: error: array must be initialized with a brace-enclosed initializer
   14 |       int arr6[6] = S[i - 5] + S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i];
a.cc:15:85: error: array must be initialized with a brace-enclosed initializer
   15 |       int arr7[7] = S[i - 6] + S[i - 5] + S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i];
a.cc:16:16: error: comparison between distinct pointer types 'int*' and 'const char*' lacks a cast
   16 |       if (arr5 == "dream"){
      |           ~~~~~^~~~~~~~~~
a.cc:17:11: error: no match for 'operator-=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'const char [6]')
   17 |         S -= "dream";
      |         ~~^~~~~~~~~~
a.cc:19:23: error: comparison between distinct pointer types 'int*' and 'const char*' lacks a cast
   19 |       } else if (arr5 == "erase"){
      |                  ~~~~~^~~~~~~~~~
a.cc:20:11: error: no match for 'operator-=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'const char [6]')
   20 |         S -= "erase";
      |         ~~^~~~~~~~~~
a.cc:22:23: error: comparison between distinct pointer types 'int*' and 'const char*' lacks a cast
   22 |       } else if (arr7 == "dreamer"){
      |                  ~~~~~^~~~~~~~~~~~
a.cc:23:11: error: no match for 'operator-=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'const char [8]')
   23 |         S -= "dreamer";
      |         ~~^~~~~~~~~~~~
a.cc:25:23: error: comparison between distinct pointer types 'int*' and 'const char*' lacks a cast
   25 |       } else if (arr6 == "eraser"){
      |                  ~~~~~^~~~~~~~~~~
a.cc:26:11: error: no match for 'operator-=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'const char [7]')
   26 |         S -= "eraser";
      |         ~~^~~~~~~~~~~
Language: C++

#include<iostream>
using namespace std;

int main () {
  string S;
  cin >> S;
  string T;
  int i = S.length() - 1;
  if (S[0] != 'd' or S[0] != 'e'){
    cout << "NO\n";
  } else {
    while (S.length() > 0){
      if (S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i] == "dream"){
        S -= "dream";
        i -= 5;
      } else if (S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i] == "erase"){
        S -= "erase";
        i -= 5;
      } else if (S[i - 6] + S[i - 5] + S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i] == "dreamer"){
        S -= "dreamer";
        i -= 7;
      } else if (s[i - 5] + S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i] == "eraser"){
        S -= "eraser";
        i -= 6;
      } else {
        cout << "NO\n"; 
        return 0;
      } 
    }
    if (S.length() == 0){
      cout << "YES\n";
    }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:60: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   13 |       if (S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i] == "dream"){
a.cc:14:11: error: no match for 'operator-=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'const char [6]')
   14 |         S -= "dream";
      |         ~~^~~~~~~~~~
a.cc:16:67: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   16 |       } else if (S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i] == "erase"){
a.cc:17:11: error: no match for 'operator-=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'const char [6]')
   17 |         S -= "erase";
      |         ~~^~~~~~~~~~
a.cc:19:89: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   19 |       } else if (S[i - 6] + S[i - 5] + S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i] == "dreamer"){
a.cc:20:11: error: no match for 'operator-=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'const char [8]')
   20 |         S -= "dreamer";
      |         ~~^~~~~~~~~~~~
a.cc:22:18: error: 's' was not declared in this scope
   22 |       } else if (s[i - 5] + S[i - 4] + S[i - 3] + S[i - 2] + S[i - 1] + S[i] == "eraser"){
      |                  ^
a.cc:23:11: error: no match for 'operator-=' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'const char [7]')
   23 |         S -= "eraser";
      |         ~~^~~~~~~~~~~
Language: C++

#include <iostream>
#include <string>

using namespace std;

string divide[4] = { "dream", "dreamer", "erase", "eraser" };

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

	reverse(s.begin(), s.end());
	for (int i = 0; i < 4; i++) {
		reverse(divide[i].begin(), divide[i].end());
	}

	bool can = true;

	for (auto i = 0; i != s.size();) {
		bool can2 = false;
		for (int j = 0; j < 4; j++) {
			string d = divide[j];
			if (s.substr(i, i + d.size()) == d) {
				can2 = true;
				i += d.size();
				break;
			}
		}
		if (!can2) {
			can = false;
			break;
		}
	}

	if (can) cout << "YES";
	else cout << "NO";

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:9: error: 'reverse' was not declared in this scope
   12 |         reverse(s.begin(), s.end());
      |         ^~~~~~~
Language: C++

#include <iostream>
#include <vector>
#include <string>

using namespace std;


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

	vector<string> s{ "dream", "dreamer", "erase", "eraser" };

	reverse(a.begin(), a.end());
	for (int i = 0; i < 4; i++) {
		reverse(s.at(i).begin(), s.at(i).end());
	}

	string b;
	bool flag = false;

	for (int i = 0; i < a.size();) {
		for (int j = 0; j < 4; j++) {
			b = s[j];
			if (a.substr(i, b.size()) == b) {
				i += b.size();
				flag = true;
			}
		}
		if (flag == false) break;
	}

	if (flag) {
		cout << "Yes" << endl;
	}
	else {
		cout << "No" << endl;
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:9: error: 'reverse' was not declared in this scope
   14 |         reverse(a.begin(), a.end());
      |         ^~~~~~~
Language: C++

#include <iostream>
#include <stdio.h>
#include <string>
using namespace std;
int main(void){
    string s;
    cin >> s;
    int start_point = 0, flag = 1;
    // cout << s.length() << endl;
    // cout << s.substr(start_point, 5) << endl;
    while(1) {
        if(s.length() == start_point){break;}
        else if(s.length() - start_point < 5){
            flag = 0;
            break;
        }
        //dreamがつく場合
        else if(s.substr(start_point, 5) == "dream"){
            //dream単体だと判定
            if(s.substr(start_point+5, 2) != "er" || s.substr(start_point+5, 5) == "erase" ){
                start_point += 5;
            }
            //dreamer単体だと判定
            else if(s.substr(start_point+5, 2) == "er" && s.substr(start_point+5, 5) != "erase"){
                start_point += 7;
            }
        }
        //eraseがつく場合
        else if(s.substr(start_point, 5) == "erase"){
            //erase単体だと判定
            if(s.substr(start_point+5, 1) != "r"){
                start_point += 5;
            }
            //eraser単体だと判定
            else if(s.substr(start_point+5, 1) == "r"){
                start_point += 6;
            }
        }
        else{
            flag = 0;
            break;
        }
    }

    if(flag == 1){cout << "YES" << endl;}
    else{cout << "NO" << endl;}
}\

Compiler output:
a.cc:47:2: error: stray '\' in program
   47 | }\
      |  ^
Language: C++

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

// dpを使った場合
// vectorではWAだったがCの配列なら行けた

int main() {
  string s;
  cin >> s;
  
  string options[4] = {"dream", "dreamer", "erase", "eraser"};
  bool dp[100010];
  
  for (int i = 0; i < (int)s.size(); i++) {
    for (string c : options) {
      // sのi番目からc.size要素までがoptionsのどれかと一致したら、
      // その末尾の添字に対応するdpの位置をtrueにする
      if (s.substr(i, (int)c.size()) == c) dp.at(i + (int)c.size()) = 1;
    }
  }
  
  // dp[s.size()](つまりsの末尾)がtrueということは、sがoptionsで綺麗に分割できたということ
  cout << (dp.at((int)s.size()) ? "YES" : "NO") << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:47: error: request for member 'at' in 'dp', which is of non-class type 'bool [100010]'
   18 |       if (s.substr(i, (int)c.size()) == c) dp.at(i + (int)c.size()) = 1;
      |                                               ^~
a.cc:23:15: error: request for member 'at' in 'dp', which is of non-class type 'bool [100010]'
   23 |   cout << (dp.at((int)s.size()) ? "YES" : "NO") << endl;
      |               ^~
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

string divide[4] = {"dream","dreamer","erase","eraser"};

int main(){
  string S;
  cin >> S;
  
  reverse(S.begin(),S.end());
  for(int i = 0;i<4){
    reverse(divide[i].begin(),divide[i].end());
  }
  bool can = true;
  for(int i = 0;i < S.size();){
    bool can2 = false;
    for(int j = 0;j <4;j++){
      string d = divide[j];
      if(S.substr(i,d.size()) == d){
        can2 = true;
        i += d.size();
      }
    }
    if(!can2){
      can = false;
      break;
    }
  }
  if(can){
    cout << "YES" << endl;
  }else{
    cout << "NO" << endl;
  }
  

}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:20: error: expected ';' before ')' token
   13 |   for(int i = 0;i<4){
      |                    ^
      |                    ;
Language: C++

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
string divide[4]={"dream","dreamer","erase","eraser"};
int main(){
  string s;
  cin>>s;
  reverse(s.begin(),s.end());
  for(int i=0;i<4;i++) reverse(divide[i].begin(),divide[i].end());
  
  bool can=true;
  for(int i=0;i<s.size();){
    can2=false;
    for(int j=0;j<4;j++){
      string d=divide[j];
      if(s.substr(i,d.size())==d){
         can2=true;
         i+=d.size();
      }
    }
    if(!can2){
      can=false;
      break;
    }
  }
  if(can) cout<<"YES"<<endl;
  else cout<<"NO"<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:5: error: 'can2' was not declared in this scope; did you mean 'can'?
   14 |     can2=false;
      |     ^~~~
      |     can
Language: C++

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

string divide[4] = {"dream", "dreamer", "erase", "eraser"};

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

    reverse(S.begin(), S.end());

    for(int = 0; i < 4; i++){
        reverse(divide[i].begin(), divide[i].end());
    }

    bool can = true;
    for(int i = 0; i < S.size(); i++){
        bool can2 =false;
        for(int j = 0; j < 4; j++){
            string d = divide[j];
            if(S.substr(i, d.size()) == d){
                can2 = true;
                i += d.size();
            }
        }
        if(!can2){
            can = false;
            break;
        }
    }
    if(can) cout << "YES" << endl;
    else cout << "NO" << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:13: error: expected unqualified-id before '=' token
   15 |     for(int = 0; i < 4; i++){
      |             ^
a.cc:15:12: error: expected ';' before '=' token
   15 |     for(int = 0; i < 4; i++){
      |            ^~
      |            ;
a.cc:15:13: error: expected primary-expression before '=' token
   15 |     for(int = 0; i < 4; i++){
      |             ^
a.cc:15:18: error: 'i' was not declared in this scope
   15 |     for(int = 0; i < 4; i++){
      |                  ^
a.cc:15:23: error: expected ')' before ';' token
   15 |     for(int = 0; i < 4; i++){
      |        ~              ^
      |                       )
a.cc:15:25: error: 'i' was not declared in this scope
   15 |     for(int = 0; i < 4; i++){
      |                         ^
Language: C++

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

string divide[4] = {"dream", "dreamer", "erase", "eraser"};

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

    reverse(S.begin(), S.end());

    for(int 0; i < 4; i++){
        reverse(divide[i].begin(), divide[i].end());
    }

    bool can = true;
    for(int i = 0; i < S.size(); i++){
        bool can2 =false;
        for(int j = 0; j < 4; j++){
            string d = divide[j];
            if(S.substr(i, d.size()) == d){
                can2 = true;
                i += d.size();
            }
        }
        if(!can2){
            can = false;
            break;
        }
    }
    if(can) cout << "YES" << endl;
    else cout << "NO" << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:13: error: expected unqualified-id before numeric constant
   15 |     for(int 0; i < 4; i++){
      |             ^
a.cc:15:12: error: expected ';' before numeric constant
   15 |     for(int 0; i < 4; i++){
      |            ^~
      |            ;
a.cc:15:16: error: 'i' was not declared in this scope
   15 |     for(int 0; i < 4; i++){
      |                ^
a.cc:15:21: error: expected ')' before ';' token
   15 |     for(int 0; i < 4; i++){
      |        ~            ^
      |                     )
a.cc:15:23: error: 'i' was not declared in this scope
   15 |     for(int 0; i < 4; i++){
      |                       ^
Language: C++

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

string divide[4] = {"dream", "dreamer", "erase", "eraser"};

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

    reverse(S.begin(), S.end());
    for(int i = 0; i < S.size(); i++){
        bool can2 =false;
        for(int j = 0; j < 4; j++){
            string d = divide[j];
            if(S.substr(i, d.size()) == d){
                can2 = true;
                i += d.size();
            }
        }
        if(!can2){
            can = false;
            break;
        }
    }
    if(can) cout << "YES" << endl;
    else cout << "NO" << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:13: error: 'can' was not declared in this scope; did you mean 'can2'?
   24 |             can = false;
      |             ^~~
      |             can2
a.cc:28:8: error: 'can' was not declared in this scope; did you mean 'tan'?
   28 |     if(can) cout << "YES" << endl;
      |        ^~~
      |        tan
Language: C++

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

string divide[4] = {"dream", "dreamer", "erase", "eraser"};

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

    reverse(S.begin(). S.end());
    for(int i = 0; i < S.size(); i++){
        bool can2 =false;
        for(int j = 0; j < 4; j++){
            string d = divide[j];
            if(S.substr(i, d.size()) == d){
                can2 = true;
                i += d.size();
            }
        }
        if(!can2){
            can = false;
            break;
        }
    }
    if(can) cout << "YES" << endl;
    else cout << "NO" << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:24: error: 'std::__cxx11::basic_string<char>::iterator' has no member named 'S'
   13 |     reverse(S.begin(). S.end());
      |                        ^
a.cc:24:13: error: 'can' was not declared in this scope; did you mean 'can2'?
   24 |             can = false;
      |             ^~~
      |             can2
a.cc:28:8: error: 'can' was not declared in this scope; did you mean 'tan'?
   28 |     if(can) cout << "YES" << endl;
      |        ^~~
      |        tan
Language: C++

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

string divide[4] = {"dream", "dreamer", "erase", "eraser"};

int main(){
  string s;
  cin >> s;
  reverse(s.begin(), s.end());
  for(int i = 0; i < 4; i++){
    reverse(divide[i].begin(), divide[i].end());
  }
  bool can = true;
  for(int i = 0; i < s.size();){
    bool can2 = false;
    for(int j = 0; j < 4; j++){
      string d = divide[j];
      if(s.substr(i, d.size()) == d){
        can 2 = true;
        i += d,size();
      }
    }
    if(!can2){
      can = false;
      break;
    }
  }  
  if(can) cout << "YES" << endl;
  else cout << "NO" << endl;
  return 0;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:19:12: error: expected ';' before numeric constant
   19 |         can 2 = true;
      |            ^~
      |            ;
a.cc:20:11: error: no match for 'operator+=' (operand types are 'int' and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
   20 |         i += d,size();
      |         ~~^~~~
a.cc:20:20: error: no matching function for call to 'size()'
   20 |         i += d,size();
      |                ~~~~^~
In file included from /usr/include/c++/14/string:53,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/range_access.h:262:5: note: candidate: 'template<class _Container> constexpr decltype (__cont.size()) std::size(const _Container&)'
  262 |     size(const _Container& __cont) noexcept(noexcept(__cont.size()))
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:262:5: note:   candidate expects 1 argument, 0 provided
/usr/include/c++/14/bits/range_access.h:272:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> constexpr std::size_t std::size(const _Tp (&)[_Nm])'
  272 |     size(const _Tp (&)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:272:5: note:   candidate expects 1 argument, 0 provided
Language: C

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
	int s, i, l = 0, a1, a2, a3, cop;
	char a11[6] = { "dream" };
	char a22[8] = { "dreamer" };
	char a33[6] = { "erase" };
	char a44[7] = { "eraser" };
	char word[10001];
  char* si = word;
  for(cop = 0; cop == 1;){
   cop = scanf("%s",si);
  }
	s = strlen(si);
	if (s < 6) {
		printf("NO");
		exit(0);
	}
	for (i = 0; i < s; i++) {
		a1 = i % 6;
		a2 = i % 7; 
		a3 = i % 8;
		if (word[i] == a11[a1] || word[i] == a33[a1]) {
			word[i] = '@';
		}
		if (word[i] == a22[a3] || word[i] == a44[a2]) {
			if (a3 == 6 && word[i + 1] != 'r' || a2 == 5 && word[i+1] != 'r') {
				printf("NO");
				exit(0);
			}
			word[i] = '@';
		}
	}
	for (i = 0; i < s; i++) {
		if (word[i] == '@') {
			l = 1;
		}
		else {
			l = 0;
		}
	}
	if (l == 1) {
		printf("YES");
	}
	else {
		printf("NO");
	

Compiler output:
main.c: In function 'main':
main.c:48:17: error: expected declaration or statement at end of input
   48 |                 printf("NO");
      |                 ^~~~~~
main.c:48:17: error: expected declaration or statement at end of input
Language: C

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
	int s, i, l = 0, a1, a2, a3, cop;
	char a11[6] = { "dream" };
	char a22[8] = { "dreamer" };
	char a33[6] = { "erase" };
	char a44[7] = { "eraser" };
	char word[10001];
  char* si = word;
  for(cop = 0; cop == 1;;){
   cop = scanf("%s",si);
  }
	s = strlen(si);
	if (s < 5) {
		printf("NO");
		exit(0);
	}
	for (i = 0; i < s; i++) {
		a1 = i % 6;
		a2 = i % 7; 
		a3 = i % 9;
		if (word[i] == a11[a1] || word[i] == a33[a1]) {
			word[i] = '@';
		}
		if (word[i] == a22[a3] || word[i] == a44[a2]) {
			if (a3 == 7 && word[i + 1] != 'r' || a2 == 6 && word[i+1] != 'r') {
				printf("NO");
				exit(0);
			}
			word[i] = '@';
		}
	}
	for (i = 0; i < s; i++) {
		if (word[i] == '@') {
			l = 1;
		}
		else {
			l = 0;
		}
	}
	if (l == 1) {
		printf("YES");
	}
	else {
		printf("NO");
	}
}

Compiler output:
main.c: In function 'main':
main.c:13:25: error: expected expression before ';' token
   13 |   for(cop = 0; cop == 1;;){
      |                         ^
Language: C

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

int main(){
	char S[];
	//scanf("%s",S);
	fgets(S);
	int length = strlen(S);
	int i,frag = 0;
	for(i = 0; i < length; i++){
		if(S[i] == 'd' && S[i + 1] == 'r' && S[i + 2] == 'e' && S[i + 3] == 'a' && S[i + 4] == 'm'){
			if(S[i + 5] == 'e' && S[i + 6] == 'r'){
				i += 6;
			} else {
				i += 4;
			}
		} else if(S[i] == 'e' && S[i + 1] == 'r' && S[i + 2] == 'a' && S[i + 3] == 's' && S[i + 4] == 'e'){
			if(S[i + 5] == 'r'){
				i += 5;
			} else {
				i += 4;
			}
		} else {
			frag++;
			break;
		}
	}
	if(frag == 0){
		printf("YES");
	} else {
		printf("NO");
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:14: error: array size missing in 'S'
    5 |         char S[];
      |              ^
main.c:7:9: error: too few arguments to function 'fgets'
    7 |         fgets(S);
      |         ^~~~~
In file included from main.c:1:
/usr/include/stdio.h:654:14: note: declared here
  654 | extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
      |              ^~~~~
Language: C

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

int main(){
	char S[];
	//scanf("%s",S);
	gets(S);
	int length = strlen(S);
	int i,frag = 0;
	for(i = 0; i < length; i++){
		if(S[i] == 'd' && S[i + 1] == 'r' && S[i + 2] == 'e' && S[i + 3] == 'a' && S[i + 4] == 'm'){
			if(S[i + 5] == 'e' && S[i + 6] == 'r'){
				i += 6;
			} else {
				i += 4;
			}
		} else if(S[i] == 'e' && S[i + 1] == 'r' && S[i + 2] == 'a' && S[i + 3] == 's' && S[i + 4] == 'e'){
			if(S[i + 5] == 'r'){
				i += 5;
			} else {
				i += 4;
			}
		} else {
			frag++;
			break;
		}
	}
	if(frag == 0){
		printf("YES");
	} else {
		printf("NO");
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:14: error: array size missing in 'S'
    5 |         char S[];
      |              ^
main.c:7:9: error: implicit declaration of function 'gets'; did you mean 'fgets'? [-Wimplicit-function-declaration]
    7 |         gets(S);
      |         ^~~~
      |         fgets
Language: C

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

int main(){
	//char S[];
	//scanf("%s",S);
	gets(S);
	int length = strlen(S);
	int i,frag = 0;
	for(i = 0; i < length; i++){
		if(S[i] == 'd' && S[i + 1] == 'r' && S[i + 2] == 'e' && S[i + 3] == 'a' && S[i + 4] == 'm'){
			if(S[i + 5] == 'e' && S[i + 6] == 'r'){
				i += 6;
			} else {
				i += 4;
			}
		} else if(S[i] == 'e' && S[i + 1] == 'r' && S[i + 2] == 'a' && S[i + 3] == 's' && S[i + 4] == 'e'){
			if(S[i + 5] == 'r'){
				i += 5;
			} else {
				i += 4;
			}
		} else {
			frag++;
			break;
		}
	}
	if(frag == 0){
		printf("YES");
	} else {
		printf("NO");
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:9: error: implicit declaration of function 'gets'; did you mean 'fgets'? [-Wimplicit-function-declaration]
    7 |         gets(S);
      |         ^~~~
      |         fgets
main.c:7:14: error: 'S' undeclared (first use in this function)
    7 |         gets(S);
      |              ^
main.c:7:14: note: each undeclared identifier is reported only once for each function it appears in
Language: C

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

int main(){
	char S[];
	scanf("%s",S);
	int length = strlen(S);
	int i,frag = 0;
	for(i = 0; i < length; i++){
		if(S[i] == 'd' && S[i + 1] == 'r' && S[i + 2] == 'e' && S[i + 3] == 'a' && S[i + 4] == 'm'){
			if(S[i + 5] == 'e' && S[i + 6] == 'r'){
				i += 6;
			} else {
				i += 4;
			}
		} else if(S[i] == 'e' && S[i + 1] == 'r' && S[i + 2] == 'a' && S[i + 3] == 's' && S[i + 4] == 'e'){
			if(S[i + 5] == 'r'){
				i += 5;
			} else {
				i += 4;
			}
		} else {
			frag++;
			break;
		}
	}
	if(frag == 0){
		printf("YES");
	} else {
		printf("NO");
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:14: error: array size missing in 'S'
    5 |         char S[];
      |              ^
Language: C++


int main(){

 string s;
 cin>>s;

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

 for(int i=0;i<4;i++){
    reverse(s[i].begin(),s[i].end());
 }

  bool can = true;
 for(int i=0;i<s.length();){
     bool can2 = false;
    for(int j =0;j<4;j++){
            string d =devide[j];
        if(s.substr(i,d.size()) == devide[j])
           can2 = true;
           i += d.size();
    }

    if(!can2){
        can = false;
        break; }
 }

 if(can)
    cout<<"Yes"<<endl;
 else cout<<"No"<<endl;

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:2: error: 'string' was not declared in this scope
    4 |  string s;
      |  ^~~~~~
a.cc:5:2: error: 'cin' was not declared in this scope
    5 |  cin>>s;
      |  ^~~
a.cc:5:7: error: 's' was not declared in this scope
    5 |  cin>>s;
      |       ^
a.cc:7:2: error: 'reverse' was not declared in this scope
    7 |  reverse(s.begin(),s.end());
      |  ^~~~~~~
a.cc:17:19: error: expected ';' before 'd'
   17 |             string d =devide[j];
      |                   ^~
      |                   ;
a.cc:18:23: error: 'd' was not declared in this scope
   18 |         if(s.substr(i,d.size()) == devide[j])
      |                       ^
a.cc:18:36: error: 'devide' was not declared in this scope
   18 |         if(s.substr(i,d.size()) == devide[j])
      |                                    ^~~~~~
a.cc:20:17: error: 'd' was not declared in this scope
   20 |            i += d.size();
      |                 ^
a.cc:29:5: error: 'cout' was not declared in this scope
   29 |     cout<<"Yes"<<endl;
      |     ^~~~
a.cc:29:18: error: 'endl' was not declared in this scope
   29 |     cout<<"Yes"<<endl;
      |                  ^~~~
a.cc:30:7: error: 'cout' was not declared in this scope
   30 |  else cout<<"No"<<endl;
      |       ^~~~
a.cc:30:19: error: 'endl' was not declared in this scope
   30 |  else cout<<"No"<<endl;
      |                   ^~~~
Language: C++

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

int main() {
  string s;
  cin >> s;
  reverse(s.begin(),s.end());
  string a[4]={"remaerd", "maerd", "esare", "resare"};
  bool can2=false;
  for(int i=0;i<s.size();){
    can2=false;
  	for(int j=0;j<4;j++){
    	string d=a[j];
      if(s.sbstr(i,d.size())==d){
        can2=true;
      i+=d.size();
      }
    }
    if(can2==false){
    break;
    }
  }
  if(can2){cout << "YES" << endl;}
  else{cout << "NO" << endl;}
}



Compiler output:
a.cc: In function 'int main()':
a.cc:14:12: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'sbstr'; did you mean 'substr'?
   14 |       if(s.sbstr(i,d.size())==d){
      |            ^~~~~
      |            substr
Language: C++

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

int main() {
  string s;
  cin >> s;
  reverse(s.begin(),s.end());
  string a[4]={"remaerd", "maerd", "esare", "resare"};
  bool can2=false;
  for(int i=0;i<s.size();){
    can2=false;
  	fir(int j=0;j<4;j++){
    	string d=a[j];
      if(s.sbstr(i,d.size())==d){
        can2=true;
      i+=d.size();
      }
    }
    if(can2==false){
    break;
    }
  }
  if(can2){cout << "YES" << endl;}
  else{cout << "NO" << endl;}
}



Compiler output:
a.cc: In function 'int main()':
a.cc:12:13: error: expected primary-expression before 'int'
   12 |         fir(int j=0;j<4;j++){
      |             ^~~
a.cc:12:21: error: 'j' was not declared in this scope
   12 |         fir(int j=0;j<4;j++){
      |                     ^
Language: C++

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

int main() {
  string s;
  cin >> s;
  reverse(s.begin(),s.end());
  string a[4]={"remaerd", "maerd", "esare", "resare"};
  for(int i=0;i<s.size();){
    bool can2=false;
  	fir(int j=0;i<4;j++){
    	string d=a[j];
      if(s.sbstr(i,d.size())==d){
        can2=true;
      i+=d.size();
      }
    }
    if(can2==false){
    break;
    }
  }
  if(can2){cout << "YES" << endl;}
  else{cout << "NO" << endl;}
}



Compiler output:
a.cc: In function 'int main()':
a.cc:11:13: error: expected primary-expression before 'int'
   11 |         fir(int j=0;i<4;j++){
      |             ^~~
a.cc:11:25: error: 'j' was not declared in this scope
   11 |         fir(int j=0;i<4;j++){
      |                         ^
a.cc:22:6: error: 'can2' was not declared in this scope
   22 |   if(can2){cout << "YES" << endl;}
      |      ^~~~
Language: C++

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

bool answer(string s){
  if(s=="") return true;
  
  int l=s.size();
  if(s.at(l-1)=='m'&&s.at(l-2)=='a'&&s.at(l-3)=='e'&&s.at(l-4)=='r'&&s.at(l-5)=='d') return answer(s.erase(i-5));
  if(s.at(l-1)=='e'&&s.at(l-2)=='s'&&s.at(l-3)=='a'&&s.at(l-4)=='r'&&s.at(l-5)=='e') return answer(s.erase(i-5));
  if(s.at(l-1)=='r'&&s.at(l-2)=='e'&&s.at(l-3)=='s'&&s.at(l-4)=='a'&&s.at(l-5)=='r'&&s.at(l-6)=='e') return answer(s.erase(i-6));
  if(s.at(l-1)=='r'&&s.at(l-2)=='e'&&s.at(l-3)=='m'&&s.at(l-4)=='a'&&s.at(l-5)=='e'&&s.at(l-6)=='r'&&s.at(l-7)=='d') return answer(s.erase(i-7));
  return false;
}

int main() {
  string s;
  cin >> s;
  if(answer(s)) cout << "YES" << endl;
  else cout << "NO" << endl;
}

Compiler output:
a.cc: In function 'bool answer(std::string)':
a.cc:8:108: error: 'i' was not declared in this scope
    8 |   if(s.at(l-1)=='m'&&s.at(l-2)=='a'&&s.at(l-3)=='e'&&s.at(l-4)=='r'&&s.at(l-5)=='d') return answer(s.erase(i-5));
      |                                                                                                            ^
a.cc:9:108: error: 'i' was not declared in this scope
    9 |   if(s.at(l-1)=='e'&&s.at(l-2)=='s'&&s.at(l-3)=='a'&&s.at(l-4)=='r'&&s.at(l-5)=='e') return answer(s.erase(i-5));
      |                                                                                                            ^
a.cc:10:124: error: 'i' was not declared in this scope
   10 |   if(s.at(l-1)=='r'&&s.at(l-2)=='e'&&s.at(l-3)=='s'&&s.at(l-4)=='a'&&s.at(l-5)=='r'&&s.at(l-6)=='e') return answer(s.erase(i-6));
      |                                                                                                                            ^
a.cc:11:140: error: 'i' was not declared in this scope
   11 |   if(s.at(l-1)=='r'&&s.at(l-2)=='e'&&s.at(l-3)=='m'&&s.at(l-4)=='a'&&s.at(l-5)=='e'&&s.at(l-6)=='r'&&s.at(l-7)=='d') return answer(s.erase(i-7));
      |                                                                                                                                            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string S, T;
  cin >> S;
  
  reverse(S.bigin(), S.end());
  string divide[4] = {"dream", "dreamer", "erase", "eraser"};
  for (int i = 0; i < 4; i++) reverse(divide[i].bigin(), divide[i].end());
  
  bool can = true;
  for (int i = 0; i < S.size();) {
    bool can2 = false;
    for (int j = 0; j < 4; j++) {
      if (S.substr(i, divide[j].size()) == divide[j]) {
        can2 = true;
        i += divide[j].size();
      }
    }
    if (!can2) {
      can = false;
      break;
    }
  }
  
  if (can) cout << "YES";
  else cout << "NO";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'bigin'; did you mean 'begin'?
    8 |   reverse(S.bigin(), S.end());
      |             ^~~~~
      |             begin
a.cc:10:49: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'bigin'; did you mean 'begin'?
   10 |   for (int i = 0; i < 4; i++) reverse(divide[i].bigin(), divide[i].end());
      |                                                 ^~~~~
      |                                                 begin
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
  string S;
  cin >> S;
  reverse(S.begin(), S.end());
  vector<string> strs = {"dream", "dreamer", "erase", "eraser"};
  for (string& s : strs) {
    reverse(s.begin(), s.end());
  }
  for (int i = 0; i < S.size(); ) {
    bool match = false;
    for (const string& s : strs) {
      if (S.find(S.begin() + i, S.being() + s.size(), s) != string::npos) {
        match = true;
        i += s.size();
        break;
      }
    }
    if (!match) {
      cout << "NO" << endl;
      return 0;
    }
  }
  cout << "YES" << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:35: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'being'
   14 |       if (S.find(S.begin() + i, S.being() + s.size(), s) != string::npos) {
      |                                   ^~~~~
Language: Java


	
	   
	   
import java.util.*;
 
public class Main {
 static HashMap<String,Boolean> jk=new HashMap<String,Boolean>();
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	   String s=sc.next();
	   HashSet<String> h=new HashSet<String>();
	   h.add("dream");
	   h.add("dreamer");
	   h.add("erase");
	   h.add("eraser");
	   boolean k=compute(s,h);
	   if(k)
	   System.out.println("YES");
	   else
	   System.out.println("NO");}
	   
	   public static boolean compute(String s,HashSet<String> h)
	   {
	       if(jk.containsKey(s))
	       return jk.get(s);
	       else{
	       if(s.length()==0)
	       return true;
	       else{
	           boolean gh=false;
	       
	           if(i+5<=s.length()&&h.contains(s.substring(0,i+5)))
	           {
	               if(i+5<s.length())
	           gh=gh||compute(s.substring(i+5),h);
	           }
	           if(i+6<=s.length()&&h.contains(s.substring(0,i+6)))
	           {
	               if(i+6<s.length())
	           gh=gh||compute(s.substring(i+6),h);
	           }
	       
	       jk.put(s,gh);
	       return gh;
	       }}
	   }}
	   
	   
	   

Compiler output:
Main.java:33: error: cannot find symbol
	           if(i+5<=s.length()&&h.contains(s.substring(0,i+5)))
	              ^
  symbol:   variable i
  location: class Main
Main.java:33: error: cannot find symbol
	           if(i+5<=s.length()&&h.contains(s.substring(0,i+5)))
	                                                        ^
  symbol:   variable i
  location: class Main
Main.java:35: error: cannot find symbol
	               if(i+5<s.length())
	                  ^
  symbol:   variable i
  location: class Main
Main.java:36: error: cannot find symbol
	           gh=gh||compute(s.substring(i+5),h);
	                                      ^
  symbol:   variable i
  location: class Main
Main.java:38: error: cannot find symbol
	           if(i+6<=s.length()&&h.contains(s.substring(0,i+6)))
	              ^
  symbol:   variable i
  location: class Main
Main.java:38: error: cannot find symbol
	           if(i+6<=s.length()&&h.contains(s.substring(0,i+6)))
	                                                        ^
  symbol:   variable i
  location: class Main
Main.java:40: error: cannot find symbol
	               if(i+6<s.length())
	                  ^
  symbol:   variable i
  location: class Main
Main.java:41: error: cannot find symbol
	           gh=gh||compute(s.substring(i+6),h);
	                                      ^
  symbol:   variable i
  location: class Main
8 errors
Language: Java


	
	   
	   
import java.util.*;
 
public class Main {
 static HashMap<String,Boolean> jk=new HashMap<String,Boolean>();
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	   String s=sc.next();
	   HashSet<String> h=new HashSet<String>();
	   h.add("dream");
	   h.add("dreamer");
	   h.add("erase");
	   h.add("eraser");
	   boolean k=compute(s,h);
	   if(k)
	   System.out.println("YES");
	   else
	   System.out.println("NO");}
	   
	   public static boolean compute(String s,HashSet<String> h)
	   {
	       if(jk.containsKey(s))
	       return jk.get(s);
	       else{
	       if(s.length()==0)
	       return true;
	       else{
	           boolean gh=false;
	       
	           if(i+5<=s.length()&&h.contains(s.substring(0,i+5)))
	           {
	               if(i+5<s.length())
	           gh=gh||compute(s.substring(i+5),h);
	           }
	           if(i+6<=s.length()&&h.contains(s.substring(0,i+6))
	           {
	               if(i+6<s.length())
	           gh=gh||compute(s.substring(i+6),h);
	           }
	       
	       jk.put(s,gh);
	       return gh;
	       }}
	   }}
	   
	   
	   

Compiler output:
Main.java:38: error: ')' expected
	           if(i+6<=s.length()&&h.contains(s.substring(0,i+6))
	                                                             ^
1 error
Language: C++

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

int main(){
  string S,T;
  cin >> S;
  
  string dream = "dream";
  string dreamer = "dreamer";
  string erase = "erase";
  string eraser = "eraser";

  
  while(T != S){
    
    int count_all = 0;
    int count1 = 0;
  for(int i = T.size(); i<T.size()+dream.size(); i++){
    if(S[i] != dream[i-T.size()]){
      count1++;
    }
  }
  if(count1 == 0) {
    T += dream;
    continue;
  }
  if(count1) count_all++;
  if(T == S) {
    cout << "YES" << endl;
    break;
  }
    
    int count3 = 0;
  for(int i = T.size(); i<T.size()+erase.size(); i++){
    if(S[i] != erase[i-T.size()]){
      count3++;
    }
  }
  if(count3 == 0) T += erase;
  if(count3) count_all++;
  if(T == S){
    cout << "YES" << endl;
    break;
  }
  
    int count4 = 0;
  for(int i = T.size(); i<T.size()+eraser.size(); i++){
    if(S[i] != eraser[i-T.size()]){
      count4++;
    }
  }
  if(count4 == 0) T += eraser;
  if(count4) count_all++;
  if(T == S){
    cout << "YES" << endl;
    break;
  }
    
    int count2 = 0;
  for(int i = T.size(); i<T.size()+dreamer.size(); i++){
    if(S[i] != dreamer[i-T.size()]){
      count2++;
    }
  }
  if(count2 == 0) {
    T += dreamer;
    
  if(count2) count_all++;
  if(T == S){
    cout << "YES" << endl;
    break;
  }
  
  
  if(count_all == 4){
    cout << "NO" << endl;
    break;
  }
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:82:2: error: expected '}' at end of input
   82 | }
      |  ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

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

int main(){
  string S,T;
  cin >> S;
  
  string dream = "dream";
  string dreamer = "dreamer";
  string erase = "erase";
  string eraser = "eraser";
  stirng dreamerase = "dreamerase";
  stirng dreameraser = "dreameraser";
  string eraserase = "eraserase";
  string eraserase = "eraseraser";

  
  while(T != S){
    
    int count_all = 0;
    int count1 = 0;
  for(int i = T.size(); i<T.size()+dream.size(); i++){
    if(S[i] != dream[i-T.size()]){
      count1++;
    }
  }
  if(count1 == 0) {
    T += dream;
    continue;
  }
  if(count1) count_all++;
  if(T == S) {
    cout << "YES" << endl;
    break;
  }
    
    int count3 = 0;
  for(int i = T.size(); i<T.size()+erase.size(); i++){
    if(S[i] != erase[i-T.size()]){
      count3++;
    }
  }
  if(count3 == 0) T += erase;
  if(count3) count_all++;
  if(T == S){
    cout << "YES" << endl;
    break;
  }
  
    int count4 = 0;
  for(int i = T.size(); i<T.size()+eraser.size(); i++){
    if(S[i] != eraser[i-T.size()]){
      count4++;
    }
  }
  if(count4 == 0) T += eraser;
  if(count4) count_all++;
  if(T == S){
    cout << "YES" << endl;
    break;
  }
    
    int count2 = 0;
  for(int i = T.size(); i<T.size()+dreamer.size(); i++){
    if(S[i] != dreamer[i-T.size()]){
      count2++;
    }
  }
  if(count2 == 0) {
    T += dreamer;
    
  if(count2) count_all++;
  if(T == S){
    cout << "YES" << endl;
    break;
  }
  
  
  if(count_all == 4){
    cout << "NO" << endl;
    break;
  }
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: 'stirng' was not declared in this scope
   13 |   stirng dreamerase = "dreamerase";
      |   ^~~~~~
a.cc:14:9: error: expected ';' before 'dreameraser'
   14 |   stirng dreameraser = "dreameraser";
      |         ^~~~~~~~~~~~
      |         ;
a.cc:16:10: error: redeclaration of 'std::string eraserase'
   16 |   string eraserase = "eraseraser";
      |          ^~~~~~~~~
a.cc:15:10: note: 'std::string eraserase' previously declared here
   15 |   string eraserase = "eraserase";
      |          ^~~~~~~~~
a.cc:86:2: error: expected '}' at end of input
   86 | }
      |  ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

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



inline bool regex_search(const string &S, const string &T) {
    bool flag = true;  
    for(int i=0; i<S.size(); i++) {
        if(S[i]==T[i]) continue;
        if(i==T.size()) break;
        else {
            flag = false;
            break;
        }
    }
    return flag;
}



int main(){
    string S;
    const string dream = "dream";
    const string dreamer = "dreamer";
    const string erase = "erase";
    const string eraser = "eraser";

    cin >> S;

    /** first filter */
    if(S[0]!='d' && S[0]!='e') cout << "NO" << endl;
    
    /** second filter */
    else if(!regex_search(S, dream) && !regex_search(S, erase)) cout << "NO" << endl;

    /** final filter */
    else {
        while(S.size()!=0) {
            if(regex_search(S, dreamer)) S = replace(S, dreamer, true);
            else if(regex_search(S, dream)) S = replace(S, dream, true);
            else if(regex_search(S, eraser)) S = replace(S, eraser, true);
            else if(regex_search(S, erase)) S = replace(S, erase, true);
            else break;
        }
        if(S.size()==0) cout << "YES" << endl;
        else cout << "NO" << endl;
    }

    return 0;
}

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

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



int main(){
    string S;
    string dream = "dream";
    string dreamer = "dreamer";
    string erase = "erase";
    string eraser = "eraser";

    cin >> S;

    /** first filter */
    if(S[0]!='d' && S[0]!='e') cout << "YES" << endl;
    else cout << "NO" << endl;
}

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

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

int main(){
  string S,T;
  cin >> S;
  
  string dream = "dream";
  string dreamer = "dreamer";
  string erase = "erase";
  string eraser = "eraser";

  
  while(T != S){
    int countall = 0;
    int count1 = 0;
  for(int i = T.size(); i<T.size()+dream.size(); i++){
    if(S[i] != dream[i-T.size()]){
      count1++;
    }
  }
  if(count1 == 0) T.push_buck(dream);
  if(count1) countall++;
  if(T == s) {
    cout << "YES" << endl;
    break;
  }

    int count2 = 0;
  for(int i = T.size(); i<T.size()+dreamer.size(); i++){
    if(S[i] != dreamer[i-T.size()]){
      count2++;
    }
  }
  if(count2 == 0) T.push_buck(dreamer);
  if(count2) countall++;
  if(T == s){
    cout << "YES" << endl;
    break;
  }
  
    int count3 = 0;
  for(int i = T.size(); i<T.size()+erase.size(); i++){
    if(S[i] != erase[i-T.size()]){
      count3++;
    }
  }
  if(count3 == 0) T.push_buck(erase);
  if(count3) countall++;
  if(T == s){
    cout << "YES" << endl;
    break;
  }
  
    int count4 = 0;
  for(int i = T.size(); i<T.size()+eraser.size(); i++){
    if(S[i] != eraser[i-T.size()]){
      count4++;
    }
  }
  if(count4 == 0) T.push_buck(eraser);
  if(count4) countall++;
  if(T == s){
    cout << "YES" << endl;
    break;
  }
  
  if(countall == 4){
    cout << "NO" << endl;
    break;
  }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:21: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'push_buck'; did you mean 'push_back'?
   23 |   if(count1 == 0) T.push_buck(dream);
      |                     ^~~~~~~~~
      |                     push_back
a.cc:25:11: error: 's' was not declared in this scope
   25 |   if(T == s) {
      |           ^
a.cc:36:21: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'push_buck'; did you mean 'push_back'?
   36 |   if(count2 == 0) T.push_buck(dreamer);
      |                     ^~~~~~~~~
      |                     push_back
a.cc:38:11: error: 's' was not declared in this scope
   38 |   if(T == s){
      |           ^
a.cc:49:21: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'push_buck'; did you mean 'push_back'?
   49 |   if(count3 == 0) T.push_buck(erase);
      |                     ^~~~~~~~~
      |                     push_back
a.cc:51:11: error: 's' was not declared in this scope
   51 |   if(T == s){
      |           ^
a.cc:62:21: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'push_buck'; did you mean 'push_back'?
   62 |   if(count4 == 0) T.push_buck(eraser);
      |                     ^~~~~~~~~
      |                     push_back
a.cc:64:11: error: 's' was not declared in this scope
   64 |   if(T == s){
      |           ^
Language: C++

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

string divide[4] = {"dream", "dreamer", "erase", "eraser"}

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

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

    for(int i = 0; i < 4; i++)
        reverse(divide[i].begin(), divide[i].end());
    
    bool flag = true;

    for(int i = 0; i < s.size();){
        bool flag2 = false;
        for(int j = 0; j < 4; j++){
            string div = divide[j];
            if(s.substr(i, div.size()) == div){
                flag2 = true;
                i += div.size();
            }
        }
        if(!flag2){
            flag = false;
            break;
        }
    }

    if(flag)
        cout << "Yes" << endl;
    else
        cout << "No" << endl;

    return 0;
}

Compiler output:
a.cc:6:1: error: expected ',' or ';' before 'int'
    6 | int main(){
      | ^~~
Language: C

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

int main(void) {

    int i;
    char s[500000];
    char *w[] = {"dream", "dreamer", "erase", "eraser"};
    char *p, *q;
    bool bMatch;

    scanf("%s", s);

    if ( strlen(s) < 5 ) {
        printf("NO\n");
        return 0;
    }

    p = &s[strlen(s) - 1];

    while (p >= s) {
        bMatch = false;
        for (i = 0; i < 4; i++ ) {
            q = p - strlen(w[i]) + 1;
            if ( q < s ) {
                continue;
            } else if ( !strncmp(w[i], q, strlen(w[i])) ) {
                p -= strlen(w[i]);
                bMatch = true;
                break;
            }

        }
        if ( bMatch == false ) {
            printf("NO\n");
            return 0;
        }
    }

    printf("YES\n");

    return 0;

}

~

Compiler output:
main.c:48:1: error: expected identifier or '(' before '~' token
   48 | ~
      | ^