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

int main() {
 
     string S;
     cin >> S;
 
     vector<string> inputs = {
             "dream",
             "dreamer",
             "erase",
             "eraser"
     };
 
     reverse(S.begin(), S.end());
     for (int i = 0; i < inputs.size(); i++) reverse(inputs[i].begin(), inputs[i].end());
 
     int pos = 0;
     while (true) {
         bool update = false;
         for (int i = 0; i < inputs.size(); i++) {
             if (S.substr(pos, inputs[i].size()) == inputs[i]) {
                 update = true;
                 pos += inputs[i].size();
                 break;
             }
         }
         if (!update) break;
     }
 
     if (pos == S.size()) cout << "YES" << endl;
     else cout << "NO" << endl;
 
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:3:6: error: 'string' was not declared in this scope
    3 |      string S;
      |      ^~~~~~
a.cc:4:6: error: 'cin' was not declared in this scope
    4 |      cin >> S;
      |      ^~~
a.cc:4:13: error: 'S' was not declared in this scope
    4 |      cin >> S;
      |             ^
a.cc:6:6: error: 'vector' was not declared in this scope
    6 |      vector<string> inputs = {
      |      ^~~~~~
a.cc:6:21: error: 'inputs' was not declared in this scope
    6 |      vector<string> inputs = {
      |                     ^~~~~~
a.cc:13:6: error: 'reverse' was not declared in this scope
   13 |      reverse(S.begin(), S.end());
      |      ^~~~~~~
a.cc:29:27: error: 'cout' was not declared in this scope
   29 |      if (pos == S.size()) cout << "YES" << endl;
      |                           ^~~~
a.cc:29:44: error: 'endl' was not declared in this scope
   29 |      if (pos == S.size()) cout << "YES" << endl;
      |                                            ^~~~
a.cc:30:11: error: 'cout' was not declared in this scope
   30 |      else cout << "NO" << endl;
      |           ^~~~
a.cc:30:27: 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 sample[4] = {"dream","dreamer","erase","eraser"};
  srting s; cin >> s;
  reverse(s.begin(), s.end());
  for (int i = 0; i < 4; i++) reverse(sample[i].begin(), sample[i].end());
  bool count1 = true;
  for (int i = 0; i < s.size();　){
    bool count2 = false;
    for (int j = 0; j < 4; j++){
      string xxx = sample[j];
      if (s.substr(i, xxx.size()) == xxx){
        count2 = true;
        i += xxx.size();
      }
    }
    if (!count2){
      count1 = false;
      break;
    }
  }
  if (count1) cout << "YES" << endl;
  else cout << "NO" << endl;
}



Compiler output:
a.cc:10:32: error: extended character 　 is not valid in an identifier
   10 |   for (int i = 0; i < s.size();　){
      |                                ^
a.cc: In function 'int main()':
a.cc:6:3: error: 'srting' was not declared in this scope
    6 |   srting s; cin >> s;
      |   ^~~~~~
a.cc:6:20: error: 's' was not declared in this scope
    6 |   srting s; cin >> s;
      |                    ^
a.cc:10:32: error: '\U00003000' was not declared in this scope
   10 |   for (int i = 0; i < s.size();　){
      |                                ^~
Language: C++

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

int main() {
  string sample[4] = {"dream","dreamer","erase","eraser"};
  srting a; cin >> s;
  reverse(s.begin(), s.end());
  for (int i = 0; i < 4; ++i) reverse(divide[i].begin(), divide[i].end());
  bool count1 = true;
  for (int i = 0; i < s.size();　){
    bool count2 = false;
    for (int j = 0; j < 4; j++){
      string xxx = sample[j];
      if (s.substr(i, xxx.size()) == xxx){
        count2 = true;
        i += xxx.size();
      }
    }
    if (!count2){
      count1 = false;
      break;
    }
  }
  if (can) cout << "YES" << endl;
  else cout << "NO" << endl;
}

        

Compiler output:
a.cc:10:32: error: extended character 　 is not valid in an identifier
   10 |   for (int i = 0; i < s.size();　){
      |                                ^
a.cc: In function 'int main()':
a.cc:6:3: error: 'srting' was not declared in this scope
    6 |   srting a; cin >> s;
      |   ^~~~~~
a.cc:6:20: error: 's' was not declared in this scope
    6 |   srting a; cin >> s;
      |                    ^
a.cc:8:39: error: 'divide' was not declared in this scope
    8 |   for (int i = 0; i < 4; ++i) reverse(divide[i].begin(), divide[i].end());
      |                                       ^~~~~~
a.cc:10:32: error: '\U00003000' was not declared in this scope
   10 |   for (int i = 0; i < s.size();　){
      |                                ^~
a.cc:24:7: error: 'can' was not declared in this scope; did you mean 'tan'?
   24 |   if (can) cout << "YES" << endl;
      |       ^~~
      |       tan
Language: C++

#include<iostream>
#include<algorithm>
#include<string>

using namespace std;

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

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'devide' was not declared in this scope
    8 |   devide[4]={"erase","eraser","dream","dreamer"};
      |   ^~~~~~
a.cc:17:19: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   17 |   for(int i=0;i<S.size;i++){
      |                 ~~^~~~
      |                       ()
a.cc:21:12: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'substring'; did you mean 'substr'?
   21 |       if(S.substring(i,d.size())==d){
      |            ^~~~~~~~~
      |            substr
Language: C++

 
int main() {
  string S;
  cin >> S;
  deque<char> dq;
  for (int i; i < S.size(); i++) {
    dq.push_back(S.at(i));
  }
  bool b = 1;
  while (!dq.empty()) {
    if (dq.at(0)=='d' && dq.at(1)=='r' && dq.at(2)=='e' && dq.at(3)=='a' && dq.at(4)=='m') {
      for (int i; i < 5; i++) {
        dq.pop_front();
      }
      if (dq.at(0)=='e' && dq.at(1)=='r' && dq.at(2)!='a') {
        for (int i; i < 2; i++) {
          dq.pop_front();
        }
      }
    }
    if (dq.at(0)=='e' && dq.at(1)=='r' && dq.at(2)=='a' && dq.at(3)=='s' && dq.at(4)=='e') {
      for (int i = 0; i < 5; i++) {
        dq.pop_front();
      }
      if (dq.at(0)=='r') {
        dq.pop_front();
      }
    }
    else {
      b = 0;
      break;
    }
  }
  if (b == 0) {
    cout << "NO" << endl;
  }
  if (b == 1) {
    cout << "YES" << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'string' was not declared in this scope
    3 |   string S;
      |   ^~~~~~
a.cc:4:3: error: 'cin' was not declared in this scope
    4 |   cin >> S;
      |   ^~~
a.cc:4:10: error: 'S' was not declared in this scope
    4 |   cin >> S;
      |          ^
a.cc:5:3: error: 'deque' was not declared in this scope
    5 |   deque<char> dq;
      |   ^~~~~
a.cc:5:9: error: expected primary-expression before 'char'
    5 |   deque<char> dq;
      |         ^~~~
a.cc:7:5: error: 'dq' was not declared in this scope
    7 |     dq.push_back(S.at(i));
      |     ^~
a.cc:10:11: error: 'dq' was not declared in this scope
   10 |   while (!dq.empty()) {
      |           ^~
a.cc:35:5: error: 'cout' was not declared in this scope
   35 |     cout << "NO" << endl;
      |     ^~~~
a.cc:35:21: error: 'endl' was not declared in this scope
   35 |     cout << "NO" << endl;
      |                     ^~~~
a.cc:38:5: error: 'cout' was not declared in this scope
   38 |     cout << "YES" << endl;
      |     ^~~~
a.cc:38:22: error: 'endl' was not declared in this scope
   38 |     cout << "YES" << endl;
      |                      ^~~~
Language: C++

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

int main(){
    string divide[4] = {"dream", "dreamer", "erase", "eraser"};
    string ans;
    cin >> ans;
    reverse(ans.begin(), ans.end());
    for(int i = 0; i < 4; i++) reverse(divide[i].begin(),divide[i].end());

    bool can = false;
    bool can2 = false;
    for(int i = 0; i < ans.size();){
        for(int a = 0; a < 4; a++){
            if(ans.substr(i, divide[a].size())== divide[a]){
                i += divide[a].size();
                can2 = true;
                break;
            } else {
                can2 = false;
            }
        }
        if(!can2){
            break;
        }
        if(ans.size() == i) can = true;
    }

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

Compiler output:
a.cc:34:1: error: expected declaration before '}' token
   34 | }
      | ^
Language: C++

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

int main(){
  divide[4]={"dream","dreamer","erase","eraser"}
  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){
        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:5:3: error: 'divide' was not declared in this scope
    5 |   divide[4]={"dream","dreamer","erase","eraser"}
      |   ^~~~~~
a.cc:7:8: error: 's' was not declared in this scope
    7 |   cin>>s;
      |        ^
a.cc:18:14: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   18 |         i+=d.size;
      |            ~~^~~~
      |                  ()
Language: C

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

int main()
{
 char a[100000];
 char b[100000];
 int i;
 int k,j=0;
int length;
 char rei1[7] = "remaerd";
 char rei2[6] = "resare";
 char rei3[5] = "maerd";
 char rei4[5] = "esare";

scanf("%s", a);

length = strlen(a);
for(i=0; i<length/2; i++){
  char tmp;
  tmp = a[i];
  a[i] = a[length-i-1];
  a[length-i-1] = tmp;
 }


 for(i=0;i < length;)
   {
     if(strncmp(rei1, a,7) ==0 && a[i] == 'r'){
                 i+=7;
                 r1++;
     }
     else if(strncmp(rei2, a,6) == 0){
                 i+=6;
                 r2++;
     }
     else if(strncmp(rei3,a,5) == 0){
                 i+=5;
                 r3++;
     }
     else if (strncmp(rei4,a,5) == 0){
                 i+=5;
                 r4++;
     }
     else break;

     j = i;
     for(k = 0;j < length;j++,k++){
                   b[k] = a[j];
                   strcpy(a,b);
     }
   }

 if(i == length)
   printf("YES\n");
 else
   printf("NO\n");

 return 0;

}

Compiler output:
main.c: In function 'main':
main.c:31:18: error: 'r1' undeclared (first use in this function); did you mean 'rei1'?
   31 |                  r1++;
      |                  ^~
      |                  rei1
main.c:31:18: note: each undeclared identifier is reported only once for each function it appears in
main.c:35:18: error: 'r2' undeclared (first use in this function); did you mean 'rei2'?
   35 |                  r2++;
      |                  ^~
      |                  rei2
main.c:39:18: error: 'r3' undeclared (first use in this function); did you mean 'rei3'?
   39 |                  r3++;
      |                  ^~
      |                  rei3
main.c:43:18: error: 'r4' undeclared (first use in this function); did you mean 'rei4'?
   43 |                  r4++;
      |                  ^~
      |                  rei4
Language: C++

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

int main() {
  string s;
  cin >> s;
  int n=s.size();
  while(s){
    if(s.substr(max(0,n-5))=="dream"){
      n-=5;
      s.erase(n);
    }
    else if(s.substr(max(0,n-5))=="erase"){
      n-=5;
      s.erase(n);
    }
    else if(s.substr(max(0,n-7))=="dreamer"){
      n-=7;
      s.erase(n);
    }
    else if(s.substr(max(0,n-6))=="eraser"){
      n-=6;
      s.erase(n);
    }
    else{
      cout << "NO" << endl;
      return 0;
    }
  }
  cout << "YES" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: could not convert 's' from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'bool'
   10 |   while(s){
      |         ^
      |         |
      |         std::string {aka std::__cxx11::basic_string<char>}
Language: C++

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

int main() {
  string s;
  cin >> s;
  int n=s.size();
  while(s){
    if(s.substr(max(0,n-5))=="dream"){
      n-=5;
      s.erase(n)
    }
    else if(s.substr(max(0,n-5))=="erase"){
      n-=5;
      s.erase(n)
    }
    else if(s.substr(max(0,n-7))=="dreamer"){
      n-=7;
      s.erase(n)
    }
    else if(s.substr(max(0,n-6))=="eraser"){
      n-=6;
      s.erase(n)
    }
    else{
      cout << "NO" << endl;
      return 0;
    }
  }
  cout << "YES" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: could not convert 's' from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'bool'
   10 |   while(s){
      |         ^
      |         |
      |         std::string {aka std::__cxx11::basic_string<char>}
a.cc:13:17: error: expected ';' before '}' token
   13 |       s.erase(n)
      |                 ^
      |                 ;
   14 |     }
      |     ~            
a.cc:17:17: error: expected ';' before '}' token
   17 |       s.erase(n)
      |                 ^
      |                 ;
   18 |     }
      |     ~            
a.cc:21:17: error: expected ';' before '}' token
   21 |       s.erase(n)
      |                 ^
      |                 ;
   22 |     }
      |     ~            
a.cc:25:17: error: expected ';' before '}' token
   25 |       s.erase(n)
      |                 ^
      |                 ;
   26 |     }
      |     ~
Language: C++

#include <bits/stdc++.h>
#include <vector>       // ヘッダファイルインクルード
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    string S;
  cin>>S;
  string divide[4]={"dream","dreamer","erase","eraser"};
  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[i];
      if(S.substr(i,d.size())==d){
      can2=true;
      i+=d.size();}
      }
    if (can2==false){
      can=false;
      break;}
  }
  if(can==true)cout<<"YES"<<endl;
  else cout<<"NO"<<endl;
            

Compiler output:
a.cc: In function 'int main()':
a.cc:29:25: error: expected '}' at end of input
   29 |   else cout<<"NO"<<endl;
      |                         ^
a.cc:8:12: note: to match this '{'
    8 | int main() {
      |            ^
Language: C++

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

int main() {
    string s;
    cin >> s;
    reverse(s.begin(), s.end());
    vector<string> a = {"dream", "dreamer", "erase", "eraser"};

    for (int i = 0; i < 4; i++) {
        reverse(a.at(i).begin(), a.at(i).end());
    }
    bool can = true;
    for (int i = 0; i < s.size()) {
        bool can2 = false;
        for (int j = 0; j < 4; j++) {
            int d = a.at(j);
            if (substr(i, d.size()) == d) {
                i += d.size();
                can2 = true;
            }
        }
        if (!can2) {
            can = false;
            break;
        }
    }
    if (can) {
        cout << "YES" << endl;
    }

    else {
        cout << "NO" << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:33: error: expected ';' before ')' token
   15 |     for (int i = 0; i < s.size()) {
      |                                 ^
      |                                 ;
a.cc:18:25: error: cannot convert '__gnu_cxx::__alloc_traits<std::allocator<std::__cxx11::basic_string<char> >, std::__cxx11::basic_string<char> >::value_type' {aka 'std::__cxx11::basic_string<char>'} to 'int' in initialization
   18 |             int d = a.at(j);
      |                     ~~~~^~~
      |                         |
      |                         __gnu_cxx::__alloc_traits<std::allocator<std::__cxx11::basic_string<char> >, std::__cxx11::basic_string<char> >::value_type {aka std::__cxx11::basic_string<char>}
a.cc:19:29: error: request for member 'size' in 'd', which is of non-class type 'int'
   19 |             if (substr(i, d.size()) == d) {
      |                             ^~~~
a.cc:19:17: error: 'substr' was not declared in this scope; did you mean 'strstr'?
   19 |             if (substr(i, d.size()) == d) {
      |                 ^~~~~~
      |                 strstr
a.cc:20:24: error: request for member 'size' in 'd', which is of non-class type 'int'
   20 |                 i += d.size();
      |                        ^~~~
Language: C++

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

int main() {
    string s;
    cin >> s;
    reverse(s.begin(), s.end());
    vector<string> a = {"dream", "dreamer", "erase", "eraser"};

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


Compiler output:
a.cc: In function 'int main()':
a.cc:15:33: error: expected ';' before ')' token
   15 |     for (int i = 0; i < s.size()) {
      |                                 ^
      |                                 ;
a.cc:18:25: error: cannot convert '__gnu_cxx::__alloc_traits<std::allocator<std::__cxx11::basic_string<char> >, std::__cxx11::basic_string<char> >::value_type' {aka 'std::__cxx11::basic_string<char>'} to 'int' in initialization
   18 |             int d = a.at(j);
      |                     ~~~~^~~
      |                         |
      |                         __gnu_cxx::__alloc_traits<std::allocator<std::__cxx11::basic_string<char> >, std::__cxx11::basic_string<char> >::value_type {aka std::__cxx11::basic_string<char>}
a.cc:19:29: error: request for member 'size' in 'd', which is of non-class type 'int'
   19 |             if (substr(i, d.size()) == d) {
      |                             ^~~~
a.cc:19:17: error: 'substr' was not declared in this scope; did you mean 'strstr'?
   19 |             if (substr(i, d.size()) == d) {
      |                 ^~~~~~
      |                 strstr
a.cc:20:24: error: request for member 'size' in 'd', which is of non-class type 'int'
   20 |                 i += d.size();
      |                        ^~~~
Language: C++

#define rel(i,x,y) for(int i=x-1;i>=y;i--)
#define all(x) x.begin(),x.end()

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(15);
    string s; cin >> s;
    rep(i,0,s.size()){
        string ts = s.substr(i,5);
        //cout << ts << endl;
        if(ts != "dream" && ts != "erase"){
            cout << "NO" << endl;
            return 0;
        }
        i+=4;
        bool dri = true;
        if(ts=="dream"){
            i++;
            ts = s.substr(i,2);
        }else{
            dri=false;
            ts = s.substr(i,2);
        }
        if(ts != "er"){
            //if(!dri) i++;
            continue;
        }
        ts = s.substr(i,3);
        if(dri && ts == "era"){ i--; continue;}
        i++;
    }
    cout << "YES" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'cin' was not declared in this scope
    5 |     cin.tie(nullptr);
      |     ^~~
a.cc:6:5: error: 'ios' has not been declared
    6 |     ios::sync_with_stdio(false);
      |     ^~~
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << fixed << setprecision(15);
      |     ^~~~
a.cc:7:13: error: 'fixed' was not declared in this scope
    7 |     cout << fixed << setprecision(15);
      |             ^~~~~
a.cc:7:22: error: 'setprecision' was not declared in this scope
    7 |     cout << fixed << setprecision(15);
      |                      ^~~~~~~~~~~~
a.cc:8:5: error: 'string' was not declared in this scope
    8 |     string s; cin >> s;
      |     ^~~~~~
a.cc:8:22: error: 's' was not declared in this scope
    8 |     string s; cin >> s;
      |                      ^
a.cc:9:9: error: 'i' was not declared in this scope
    9 |     rep(i,0,s.size()){
      |         ^
a.cc:9:5: error: 'rep' was not declared in this scope; did you mean 'rel'?
    9 |     rep(i,0,s.size()){
      |     ^~~
      |     rel
a.cc:33:22: error: 'endl' was not declared in this scope
   33 |     cout << "YES" << endl;
      |                      ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string s;
  cin >> s;
  reverse(s.begin(), s.end());
  array<string, 4> divide ={dream, dreamer, erase,eraser};
  for(int i=0;i<4;i++){
    reverse(divide.at(i).begin(), divide.at(i).end());
  }
  
  bool can =true;
  
  for(int i=0; i<s.size(); ){
    bool good= false;
    for(int j=0; j<4; j++){
      string tmp = divide.at(j);
      if( s.substr(i, tmp.size()) == tmp ){
        good =true; i+=tmp.size();
        break;
      }
    }
      if(!good){
        can = false;
        break;
      }
  }
    if(can) cout << "NO" <<endl;
    else cout << "YES"<< endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:29: error: 'dream' was not declared in this scope; did you mean 'drem'?
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                             ^~~~~
      |                             drem
a.cc:8:36: error: 'dreamer' was not declared in this scope
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                                    ^~~~~~~
a.cc:8:45: error: 'erase' was not declared in this scope
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                                             ^~~~~
a.cc:8:51: error: 'eraser' was not declared in this scope
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                                                   ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string s;
  cin >> s;
  reverse(s.begin(), s.end());
  array<string, 4> divide ={dream, dreamer, erase,eraser};
  for(int i=0;i<4;i++){
    reverse(divide.at(i).begin(), divide.at(i).end());
  }
  
  bool can =true;
  
  for(int i=0; i<s.size(); ){
    bool good= false;
    for(int j=0; j<4; j++){
      string tmp = divide.at(j);
      if( s.substr(i, tmp.size()) == tmp ){
        good =true; i+=tmp.size();
        break;
    }
      if(!good){
        can = false;
        break;
      }
  }
    if(can) cout << "NO" <<endl;
    else cout << "YES"<< endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:29: error: 'dream' was not declared in this scope; did you mean 'drem'?
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                             ^~~~~
      |                             drem
a.cc:8:36: error: 'dreamer' was not declared in this scope
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                                    ^~~~~~~
a.cc:8:45: error: 'erase' was not declared in this scope
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                                             ^~~~~
a.cc:8:51: error: 'eraser' was not declared in this scope
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                                                   ^~~~~~
a.cc:30:2: error: expected '}' at end of input
   30 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string s;
  cin >> s;
  reverse(s.begin(), s.end());
  array<string, 4> divide ={dream, dreamer, erase,eraser};
  for(int i=0;i<4;i++){
    reverse(divide.at(i).begin(), divide.at(i).end());
  }
  
  bool can =true;
  
  for(int i=0; i<s.size(); ){
    bool good= false;
    for(int j=0; j<4; j++){
      string tmp = divide.at(j);
      if( s.substr(i, tmp.size()) == tmp ){
        good =true; i+=tmp.size();
        break;
    }
      if(!good){
        can = false;
        break;
      }
  }
    if(can) cout << "NO" <<endl;
    else cout << "YES" endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:29: error: 'dream' was not declared in this scope; did you mean 'drem'?
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                             ^~~~~
      |                             drem
a.cc:8:36: error: 'dreamer' was not declared in this scope
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                                    ^~~~~~~
a.cc:8:45: error: 'erase' was not declared in this scope
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                                             ^~~~~
a.cc:8:51: error: 'eraser' was not declared in this scope
    8 |   array<string, 4> divide ={dream, dreamer, erase,eraser};
      |                                                   ^~~~~~
a.cc:29:23: error: expected ';' before 'endl'
   29 |     else cout << "YES" endl;
      |                       ^~~~~
      |                       ;
a.cc:30:2: error: expected '}' at end of input
   30 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

(function() {
    const str = require('fs').readFileSync('/dev/stdin', 'utf-8').trim();
    const i = 0;
    while (i < str.length) {
        if(str.substring(i, i+7) == 'dreamer') {
            i += 7;
        } else if (str.substring(i, i+6) == 'eraser') {
            i += 6;
        } else if (str.substring(i, i+5) == 'erase' || str.substring(i, i+5) == 'dream') {
            i += 5;
        } else {
            console.log('NO');
            return
        }
    }
    console.log('YES');
})()

Compiler output:
a.cc:2:25: warning: multi-character character constant [-Wmultichar]
    2 |     const str = require('fs').readFileSync('/dev/stdin', 'utf-8').trim();
      |                         ^~~~
a.cc:2:44: warning: multi-character literal with 10 characters exceeds 'int' size of 4 bytes
    2 |     const str = require('fs').readFileSync('/dev/stdin', 'utf-8').trim();
      |                                            ^~~~~~~~~~~~
a.cc:2:58: warning: multi-character literal with 5 characters exceeds 'int' size of 4 bytes
    2 |     const str = require('fs').readFileSync('/dev/stdin', 'utf-8').trim();
      |                                                          ^~~~~~~
a.cc:5:37: warning: multi-character literal with 7 characters exceeds 'int' size of 4 bytes
    5 |         if(str.substring(i, i+7) == 'dreamer') {
      |                                     ^~~~~~~~~
a.cc:7:45: warning: multi-character literal with 6 characters exceeds 'int' size of 4 bytes
    7 |         } else if (str.substring(i, i+6) == 'eraser') {
      |                                             ^~~~~~~~
a.cc:9:45: warning: multi-character literal with 5 characters exceeds 'int' size of 4 bytes
    9 |         } else if (str.substring(i, i+5) == 'erase' || str.substring(i, i+5) == 'dream') {
      |                                             ^~~~~~~
a.cc:9:81: warning: multi-character literal with 5 characters exceeds 'int' size of 4 bytes
    9 |         } else if (str.substring(i, i+5) == 'erase' || str.substring(i, i+5) == 'dream') {
      |                                                                                 ^~~~~~~
a.cc:12:25: warning: multi-character character constant [-Wmultichar]
   12 |             console.log('NO');
      |                         ^~~~
a.cc:16:17: warning: multi-character character constant [-Wmultichar]
   16 |     console.log('YES');
      |                 ^~~~~
a.cc:1:12: error: expected ')' before '{' token
    1 | (function() {
      | ~          ^~
      |            )
a.cc:17:2: error: expected unqualified-id before ')' token
   17 | })()
      |  ^
Language: C++

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

int main() {
    string S;
    cin >> S;
    string div[]={"dream","dreamer","erase","eraser"};
    reverse(S.begin(),S.end());
    for (int i = 0; i < 4; i++)
    {
        reverse(div[i].begin(),div[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 = div[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:15:38: error: expected ')' before '{' token
   15 |     for (int i = 0; i < S.size(); i++
      |         ~                            ^
      |                                      )
   16 |     {
      |     ~
Language: C++

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

int main(){
    string s;
    cin>>s;
    reverse(all(s));
    rep(i,s.size()){
        if(s.substr(i,5)=="maerd") i+=5;
        else if(s.substr(i,7)=="remaerd") i+=7;
        else if(s.substr(i,5)=="esare") i+=5;
        else if(s.substr(i,6)=="resare") i+=6;
        else flag=0;
        if(i==s.size()) flag=1;
    }
    cout<<(flag?"YES":"NO")<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:14: error: 'flag' was not declared in this scope
   16 |         else flag=0;
      |              ^~~~
a.cc:17:25: error: 'flag' was not declared in this scope
   17 |         if(i==s.size()) flag=1;
      |                         ^~~~
a.cc:19:12: error: 'flag' was not declared in this scope
   19 |     cout<<(flag?"YES":"NO")<<endl;
      |            ^~~~
Language: C++

int main() {
    string S; cin >> S;
    vector<string> V = {
        "dreamer",
        "eraser",
        "dream",
        "erase"};
    
    stack<pair<int,int>> ST;
    int pos = 0;
    int cur = 0;
    while(1) {
        string T = V[cur];
        if (S.find(T, pos) == pos) {
            ST.push({pos,cur+1});
            pos += T.size();
            if (pos == S.size()) {
                cout << "YES" << endl;
                return 0;
            }
            cur = 0;
            continue;
        }
        if (++cur < V.size()) continue;
        if (!ST.empty()) {
            pair<int,int> P = ST.top(); ST.pop();
            pos = P.first;
            cur = P.second;
            continue;
        }
        cout << "NO" << endl;
        return 0;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:2:5: error: 'string' was not declared in this scope
    2 |     string S; cin >> S;
      |     ^~~~~~
a.cc:2:15: error: 'cin' was not declared in this scope
    2 |     string S; cin >> S;
      |               ^~~
a.cc:2:22: error: 'S' was not declared in this scope
    2 |     string S; cin >> S;
      |                      ^
a.cc:3:5: error: 'vector' was not declared in this scope
    3 |     vector<string> V = {
      |     ^~~~~~
a.cc:3:20: error: 'V' was not declared in this scope
    3 |     vector<string> V = {
      |                    ^
a.cc:9:5: error: 'stack' was not declared in this scope
    9 |     stack<pair<int,int>> ST;
      |     ^~~~~
a.cc:9:11: error: 'pair' was not declared in this scope
    9 |     stack<pair<int,int>> ST;
      |           ^~~~
a.cc:9:16: error: expected primary-expression before 'int'
    9 |     stack<pair<int,int>> ST;
      |                ^~~
a.cc:13:15: error: expected ';' before 'T'
   13 |         string T = V[cur];
      |               ^~
      |               ;
a.cc:14:20: error: 'T' was not declared in this scope
   14 |         if (S.find(T, pos) == pos) {
      |                    ^
a.cc:15:13: error: 'ST' was not declared in this scope
   15 |             ST.push({pos,cur+1});
      |             ^~
a.cc:18:17: error: 'cout' was not declared in this scope
   18 |                 cout << "YES" << endl;
      |                 ^~~~
a.cc:18:34: error: 'endl' was not declared in this scope
   18 |                 cout << "YES" << endl;
      |                                  ^~~~
a.cc:25:14: error: 'ST' was not declared in this scope
   25 |         if (!ST.empty()) {
      |              ^~
a.cc:26:18: error: expected primary-expression before 'int'
   26 |             pair<int,int> P = ST.top(); ST.pop();
      |                  ^~~
a.cc:27:19: error: 'P' was not declared in this scope
   27 |             pos = P.first;
      |                   ^
a.cc:31:9: error: 'cout' was not declared in this scope
   31 |         cout << "NO" << endl;
      |         ^~~~
a.cc:31:25: error: 'endl' was not declared in this scope
   31 |         cout << "NO" << endl;
      |                         ^~~~
Language: C++

l = input()

l = l.replace('eraser','').replace('erase','').replace('dreamer','').replace('dream','')
if (l == ''):
  print("YES")
else:
  print("NO")

Compiler output:
a.cc:3:15: warning: multi-character literal with 6 characters exceeds 'int' size of 4 bytes
    3 | l = l.replace('eraser','').replace('erase','').replace('dreamer','').replace('dream','')
      |               ^~~~~~~~
a.cc:3:24: error: empty character constant
    3 | l = l.replace('eraser','').replace('erase','').replace('dreamer','').replace('dream','')
      |                        ^~
a.cc:3:36: warning: multi-character literal with 5 characters exceeds 'int' size of 4 bytes
    3 | l = l.replace('eraser','').replace('erase','').replace('dreamer','').replace('dream','')
      |                                    ^~~~~~~
a.cc:3:44: error: empty character constant
    3 | l = l.replace('eraser','').replace('erase','').replace('dreamer','').replace('dream','')
      |                                            ^~
a.cc:3:56: warning: multi-character literal with 7 characters exceeds 'int' size of 4 bytes
    3 | l = l.replace('eraser','').replace('erase','').replace('dreamer','').replace('dream','')
      |                                                        ^~~~~~~~~
a.cc:3:66: error: empty character constant
    3 | l = l.replace('eraser','').replace('erase','').replace('dreamer','').replace('dream','')
      |                                                                  ^~
a.cc:3:78: warning: multi-character literal with 5 characters exceeds 'int' size of 4 bytes
    3 | l = l.replace('eraser','').replace('erase','').replace('dreamer','').replace('dream','')
      |                                                                              ^~~~~~~
a.cc:3:86: error: empty character constant
    3 | l = l.replace('eraser','').replace('erase','').replace('dreamer','').replace('dream','')
      |                                                                                      ^~
a.cc:4:10: error: empty character constant
    4 | if (l == ''):
      |          ^~
a.cc:1:1: error: 'l' does not name a type
    1 | l = input()
      | ^
Language: C

#include<stdio.h>
int main(void){
  char s[10000];
  char t[10000];
  int i;
  
  for(i=0;i<10000;i++){
    scanf("%s",&s[i]);
  }
  
  for(i=0;i<10000;i++){
    if(s[i]=="d" && s[i+1]=="r" && s[i+2]=="e" &&s[i+3]=="a" &&s[i+4]=="m"){
      i += 4;
      if(s[i]==e&&s[i]==r){
        i += 2;
      }
    }
    else if(s[i]=="e" && s[i+1]=="r" && s[i+2]=="a" &&s[i+3]=="s" &&s[i+4]=="e"){
      i += 4;
      if(s[i]==r){
        i += 1;
      }
    } 
    else{
      printf("NO");
      break;
    }
  }
  printf("YES");
  
  
  //printf("%s",s);
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:12: warning: comparison between pointer and integer
   12 |     if(s[i]=="d" && s[i+1]=="r" && s[i+2]=="e" &&s[i+3]=="a" &&s[i+4]=="m"){
      |            ^~
main.c:12:27: warning: comparison between pointer and integer
   12 |     if(s[i]=="d" && s[i+1]=="r" && s[i+2]=="e" &&s[i+3]=="a" &&s[i+4]=="m"){
      |                           ^~
main.c:12:42: warning: comparison between pointer and integer
   12 |     if(s[i]=="d" && s[i+1]=="r" && s[i+2]=="e" &&s[i+3]=="a" &&s[i+4]=="m"){
      |                                          ^~
main.c:12:56: warning: comparison between pointer and integer
   12 |     if(s[i]=="d" && s[i+1]=="r" && s[i+2]=="e" &&s[i+3]=="a" &&s[i+4]=="m"){
      |                                                        ^~
main.c:12:70: warning: comparison between pointer and integer
   12 |     if(s[i]=="d" && s[i+1]=="r" && s[i+2]=="e" &&s[i+3]=="a" &&s[i+4]=="m"){
      |                                                                      ^~
main.c:14:16: error: 'e' undeclared (first use in this function)
   14 |       if(s[i]==e&&s[i]==r){
      |                ^
main.c:14:16: note: each undeclared identifier is reported only once for each function it appears in
main.c:14:25: error: 'r' undeclared (first use in this function)
   14 |       if(s[i]==e&&s[i]==r){
      |                         ^
main.c:18:17: warning: comparison between pointer and integer
   18 |     else if(s[i]=="e" && s[i+1]=="r" && s[i+2]=="a" &&s[i+3]=="s" &&s[i+4]=="e"){
      |                 ^~
main.c:18:32: warning: comparison between pointer and integer
   18 |     else if(s[i]=="e" && s[i+1]=="r" && s[i+2]=="a" &&s[i+3]=="s" &&s[i+4]=="e"){
      |                                ^~
main.c:18:47: warning: comparison between pointer and integer
   18 |     else if(s[i]=="e" && s[i+1]=="r" && s[i+2]=="a" &&s[i+3]=="s" &&s[i+4]=="e"){
      |                                               ^~
main.c:18:61: warning: comparison between pointer and integer
   18 |     else if(s[i]=="e" && s[i+1]=="r" && s[i+2]=="a" &&s[i+3]=="s" &&s[i+4]=="e"){
      |                                                             ^~
main.c:18:75: warning: comparison between pointer and integer
   18 |     else if(s[i]=="e" && s[i+1]=="r" && s[i+2]=="a" &&s[i+3]=="s" &&s[i+4]=="e"){
      |                                                                           ^~
Language: C++

#include<iostream>

#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i, x, n) for (int i = x; i < (n); ++i)
using namespace std;

// using ll = long long;
// using P = pair<int, int>;

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

int main() {
    string S;
    cin >> S;
    // 後ろから解く代わりにすべての文字を左右反転させる
    reverse(S.begin(), S.end());
    rep(i, 4) reverse(divider[i].begin(), divider[i].end());

    // 端から切っていく
    bool can = true;
    for (int i = 0; i < S.size();) {
        bool can2 = false; // 4 個の文字列たちどれかで divide（割り算できるか）
        rep(j, 4) {
            string d = divider[j];
            if (S.substr(i, d.size()) == d) { // i 番目から d.size() だけ抜き出す
                can2 = true;
                i += d.size(); // divide できたら i を進める．
            }
        }
        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:16:5: error: 'reverse' was not declared in this scope
   16 |     reverse(S.begin(), S.end());
      |     ^~~~~~~
Language: C++

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

int main() {
  string S;
  cin >> S;
  
  while(S.size()) {
    if (S.substr(S.size()-4) == "dream") {
      S = S.erase(S.size() - 4);
    } else if (S.substr(S.size() - 6) == "dreamer") {
      S = S.erase(S.size() - 6);
    } else if (S.substr(S.size() - 4) == "erase") {
      S = S.erase(S.size() - 4);
    } else if (S.substr(S.size() - 5) == "eraser") {
      S = S.erase(S.size() - 5);
    } else {
      cout << "NO" << endl;
      return 0;
  }
  cout << "YES" << endl;
  
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:2: error: expected '}' at end of input
   24 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

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

int main(){
  string S;
  cin >> S;
  int a = 0;
  string t1 = "dream", t2 = "dreamer", t3 = "erase", t4 = "eraser";
  while(){
    if(S.substr(0,5) == t1) S.erase(0, 5);
    if(S.substr(0,7) == t2) S.erase(0, 7);
    if(S.substr(0,5) == t3) S.erase(0, 5);
    if(S.substr(0,6) == t4) S.erase(0, 6);
    
    if(S.size() == 0)a++;
    
    if(S.size() < 5) break;
    if(S.substr(0,5) != t1 && S.substr(0,7) != t2 && 
       S.substr(0,5) != t3 && S.substr(0,6) != t4) break;   
  }
  if(a){
    cout << "Yes" << endl;
  }else{
    cout << "No" << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: expected primary-expression before ')' token
    9 |   while(){
      |         ^
Language: C++

#include<iostream>

using namespace std;

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

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

	int t = 1;
	for (int i = 0; i < s.size(); i++) {
		if (s[i] == 'm') {
			i += 4;
		}
		else if (s[i] == 'e') {
			i += 4;
		}
		else if (s[i] == 'r') {
			i += 2;
			if (s[i] == 'm') {
				i += 4;
			}
			else if (s[i] == 's') {
				i += 3;
			}
			else t = 0; break;
		}
		else t = 0; break;
	}

	if (t) cout << "YES" << endl;
	else cout << "NO" << endl;


	return 0;
}

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

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


int main (){
    string S,T;
    cin >> S;
    T="";
    bool z1=false;
    string d,D,e,E;
    d="maerd",D="remaerd",e="esare",E="resare";
    int i=0;
    reverse(S.begin(),S.end());
    while(true){
        int N=T.size();
        T+=d;
        for(i=0;i<T.size();i++){
            if(S.at(i)!=T.at(i)){
                z1=true;
            }
        }
        if(z1){
             T.subster(0,N);
            z1=false;
        }
        T+=D;
        for(i=0;i<T.size();i++){
            if(S.at(i)!=T.at(i)){
                z1=true;
            }
        }
        if(z1){
            T.subster(0,N);
            z1=false;
        }
        T+=e;
        for(i=0;i<T.size();i++){
            if(S.at(i)!=T.at(i)){
                z1=true;
            }
        }
        if(z1){
                       T.subster(0,N);
            T.erase(T.end()-5);
            z1=false;
        }
        T+=E;
        for(i=0;i<T.size();i++){
            if(S.at(i)!=T.at(i)){
                z1=true;
            }
        }
        if(z1){
                       T.subster(0,N);
            T.erase(T.end()-6);
            z1=false;
        }
        if(T.size()==S.size()){
            cout << "YES" << endl;
            break;
        }
        else if(N==T.size()){
            cout << "NO" << endl;
            break;
        }
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:16: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'subster'; did you mean 'substr'?
   24 |              T.subster(0,N);
      |                ^~~~~~~
      |                substr
a.cc:34:15: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'subster'; did you mean 'substr'?
   34 |             T.subster(0,N);
      |               ^~~~~~~
      |               substr
a.cc:44:26: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'subster'; did you mean 'substr'?
   44 |                        T.subster(0,N);
      |                          ^~~~~~~
      |                          substr
a.cc:55:26: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'subster'; did you mean 'substr'?
   55 |                        T.subster(0,N);
      |                          ^~~~~~~
      |                          substr
Language: Java

import java.util.*;
class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    
    String s1 = sc.next();
    StringBuffer sb = new StringBuffer(s1);
    String s2 = sb.reverse().toString();
    
    dream dreamer erase eraser
    String s3 = s2.replace("maerd","").replace("remaerd","").replace("esare","").replace("resare","");
    
    if(s3.size==0){
      System.out.println("YES");
    }else{
      System.out.println("NO");
    }
  }
}

Compiler output:
Main.java:12: error: ';' expected
    dream dreamer erase eraser
                 ^
Main.java:12: error: ';' expected
    dream dreamer erase eraser
                              ^
2 errors
Language: C++

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

string dfs(string s,string s1,vector<string> a){
    if(s.size()<=s1.size()){
        return s1;
    }
    else if(s.substr(0,s1.size())!=s1){
       return "NO";
    }
    rep(i,4){
        string l=dfs(s,s1+a[i],a);
        if(l==s||l=="YES"){
            return "YES";
        }
        else if(l=="NO"){
            return "NO"
        }
    }
   return"NO";
}
int main(){
    string s;cin>>s;
    bool flag=false;
    vector<string> a={"dream", "dreamer", "erase", "eraser"};
    cout<<dfs(s,"",a)<<endl;
}

Compiler output:
a.cc: In function 'std::string dfs(std::string, std::string, std::vector<std::__cxx11::basic_string<char> >)':
a.cc:22:24: error: expected ';' before '}' token
   22 |             return "NO"
      |                        ^
      |                        ;
   23 |         }
      |         ~
Language: C++

#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
#include <queue>
 
using namespace std;

int main(){
    string devide[4]={"dream","dreamer","erase","eraser"};
    for(int i=0;i<4;i++)reverse(devide[i].begin(),devide[j].end());
    string S; cin>>S;
    for(int i=0;i<S.size();i++){
        bool can2=0;
        for(int j=0;j<4;j++){
            string d = devide[j];
            if(S.substr(i,d.size())==d){
                can2=1;
                i+=d.size();
            }
        }
        if(!can2){
            cout<<"NO"<<endl;
            return 0;
        }
    }
    cout<<"YES"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:58: error: 'j' was not declared in this scope
   12 |     for(int i=0;i<4;i++)reverse(devide[i].begin(),devide[j].end());
      |                                                          ^