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

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

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


Compiler output:
a.cc: In function 'int main()':
a.cc:13:35: error: expected ';' before ')' token
   13 |   for(int i = 0; i < s.size(), i++){
      |                                   ^
      |                                   ;
Language: C++

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

int main(){
  string s;
  cin >> s;
  reverse(s.begin(), s.end());
  string divide[4] = {"dream", "dreamer", "erase", "eraser"};
  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:13:30: error: expected ';' before ')' token
   13 |   for(int i = 0; i < s.size()){
      |                              ^
      |                              ;
Language: C++

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

int main(){
  string s;
  cin >> s;
  reverse(s.begin(), s.end());
  string divide[4] = {"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 can2 = false;
    for(int j = 0; j < 4; j++){
      string d = divide.at(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:10:21: error: request for member 'at' in 'divide', which is of non-class type 'std::string [4]' {aka 'std::__cxx11::basic_string<char> [4]'}
   10 |     reverse((divide.at(i)).begin(), (divide.at(i)).end());
      |                     ^~
a.cc:10:45: error: request for member 'at' in 'divide', which is of non-class type 'std::string [4]' {aka 'std::__cxx11::basic_string<char> [4]'}
   10 |     reverse((divide.at(i)).begin(), (divide.at(i)).end());
      |                                             ^~
a.cc:13:30: error: expected ';' before ')' token
   13 |   for(int i = 0; i < s.size()){
      |                              ^
      |                              ;
a.cc:16:25: error: request for member 'at' in 'divide', which is of non-class type 'std::string [4]' {aka 'std::__cxx11::basic_string<char> [4]'}
   16 |       string d = divide.at(j);
      |                         ^~
Language: C++

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

int main(){
  string s;
  cin >> s;
  reverse(s.begin(), s.end());
  string 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 can2 = false;
    for(int j = 0; j < 4; j++){
      string d = divide.at(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:8:57: error: could not convert '{"dream", "dreamer", "erase", "eraser"}' from '<brace-enclosed initializer list>' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
    8 |   string divide = {"dream", "dreamer", "erase", "eraser"};
      |                                                         ^
      |                                                         |
      |                                                         <brace-enclosed initializer list>
a.cc:10:28: error: request for member 'begin' in 'divide.std::__cxx11::basic_string<char>::at(((std::__cxx11::basic_string<char>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'}
   10 |     reverse((divide.at(i)).begin(), (divide.at(i)).end());
      |                            ^~~~~
a.cc:10:52: error: request for member 'end' in 'divide.std::__cxx11::basic_string<char>::at(((std::__cxx11::basic_string<char>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'}
   10 |     reverse((divide.at(i)).begin(), (divide.at(i)).end());
      |                                                    ^~~
a.cc:13:30: error: expected ';' before ')' token
   13 |   for(int i = 0; i < s.size()){
      |                              ^
      |                              ;
a.cc:16:27: error: conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
   16 |       string d = divide.at(j);
      |                  ~~~~~~~~~^~~
Language: C++

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

int main(){
  string s;
  cin >> s;
  reverse(s.begin(), s.end());
  string 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 can2 = false;
    for(int j = 0; j < 4; j++){
      string d = divide.at(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:8:57: error: could not convert '{"dream", "dreamer", "erase", "eraser"}' from '<brace-enclosed initializer list>' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
    8 |   string divide = {"dream", "dreamer", "erase", "eraser"};
      |                                                         ^
      |                                                         |
      |                                                         <brace-enclosed initializer list>
a.cc:10:26: error: request for member 'begin' in 'divide.std::__cxx11::basic_string<char>::at(((std::__cxx11::basic_string<char>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'}
   10 |     reverse(divide.at(i).begin(), divide.at(i).end());
      |                          ^~~~~
a.cc:10:48: error: request for member 'end' in 'divide.std::__cxx11::basic_string<char>::at(((std::__cxx11::basic_string<char>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'}
   10 |     reverse(divide.at(i).begin(), divide.at(i).end());
      |                                                ^~~
a.cc:13:30: error: expected ';' before ')' token
   13 |   for(int i = 0; i < s.size()){
      |                              ^
      |                              ;
a.cc:16:27: error: conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
   16 |       string d = divide.at(j);
      |                  ~~~~~~~~~^~~
Language: Java

import java.util.Scanner;
public class Main {
  public static void main(String[] args) {
    new Main();
  }
  public Main() {
    try (Scanner sc = new Scanner(System.in)) {
      String S = sc.next();
      String rev = "";
      for (int i = S.length() - 1;i >= 0;-- i) {
        rev += S.charAt(i);
        switch(rev) {
          case "maerd":
          case "remaerd":
          case "esare":
          case "resare":
            rev = "";
      }
      System.out.println(rev.isEmpty() ? "YES" : "NO");
    }
  }
}

Compiler output:
Main.java:22: error: reached end of file while parsing
}
 ^
1 error
Language: C++

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

int main() {
  string s;
  cin>>s;
  string devide[4]={"dream","dreamer","erase","eraser"};
  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();){
    bool can2=false;
    for(int j=0;j<4;j++){
      string d=devide[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:19:20: error: expected ';' before '}' token
   19 |         i+=d.size()
      |                    ^
      |                    ;
   20 |       }
      |       ~
Language: C++

#include<bits/stdc++.h>
#include <iostream>
#include <string>
#include <cmath>
using namespace std;
#define ll long long
#define rep(i, n) for (ll i = 0; i < (n); i++)
#define FOR(i,a,b) for(ll i=(a);i<(b);i++)
#define FORR(i,a,b)for(ll i=(a);i<=(b);i++)
#define repR(i,n) for(ll i=n;i>=0;i--)
#define all(v)(v).begin(),(v).end()
#define rall(v)(v).rbegin(),(v).rend()
#define F first
#define S second
#define pb push_back
#define pu push
#define COUT(x) cout<<(x)<<endl
#define PQ priority_queue<ll>
#define PQR priority_queue<ll,vector<ll>,greater<ll>>
#define YES(n) cout << ((n) ? "YES" : "NO"  ) << endl
#define Yes(n) cout << ((n) ? "Yes" : "No"  ) << endl
#define mp make_pair
#define maxs(x,y) (x = max(x,y))
#define mins(x,y) (x = min(x,y))
#define sz(x) (int)(x).size()
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll MOD = 1000000007LL;
const ll INF = 1LL << 60;
using vll = vector<ll>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vvll = vector<vll>;
using vstr = vector<string>;
using pll = pair<ll, ll>;
int main(){
  string s;
  cin>>s;
  bool ans=true;
  for(int i=sz(s)-1;i>=0;i--){
    if(i-4>=0){
      if(s[i]=='m'&&s[i-1]=='a'&&s[i-2]=='e'&&s[i-3]=='r'&&s[i-4]=='d'){
        i-=4;
        continue;
      }
      else if(s[i]=='e'&&s[i-1]=='s'&&s[i-2]=='a'&&s[i-3]=='r'&&s[i-4]=='e'){
        i-=4;
        continue;
      }
    }
    if(i-6>=0){
      if(s[i]=='r'&&s[i-1]=='e'&&s[i-2]=='m'&&s[i-3]=='a'&&s[i-4]=='e'&&s[i-5]=='r'&&s[i-6]=='d'){
        i-=6;
        continue;
      }
    }
    if(i-5>=0){
      else if(s[i]=='r'&&s[i-1]=='e'&&s[i-2]=='s'&&s[i-3]=='a'&&s[i-4]=='r'&&s[i-5]=='e'){
        i-=5;
        continue;
      }
    }
    
    ans=false;
    break;
  }
  YES(ans);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:58:7: error: expected '}' before 'else'
   58 |       else if(s[i]=='r'&&s[i-1]=='e'&&s[i-2]=='s'&&s[i-3]=='a'&&s[i-4]=='r'&&s[i-5]=='e'){
      |       ^~~~
a.cc:57:15: note: to match this '{'
   57 |     if(i-5>=0){
      |               ^
a.cc:65:5: error: break statement not within loop or switch
   65 |     break;
      |     ^~~~~
a.cc: At global scope:
a.cc:20:16: error: 'cout' does not name a type
   20 | #define YES(n) cout << ((n) ? "YES" : "NO"  ) << endl
      |                ^~~~
a.cc:67:3: note: in expansion of macro 'YES'
   67 |   YES(ans);
      |   ^~~
a.cc:68:1: error: expected declaration before '}' token
   68 | }
      | ^
Language: C++

#include<bits/stdc++.h>
#include <iostream>
#include <string>
#include <cmath>
using namespace std;
#define ll long long
#define rep(i, n) for (ll i = 0; i < (n); i++)
#define FOR(i,a,b) for(ll i=(a);i<(b);i++)
#define FORR(i,a,b)for(ll i=(a);i<=(b);i++)
#define repR(i,n) for(ll i=n;i>=0;i--)
#define all(v)(v).begin(),(v).end()
#define rall(v)(v).rbegin(),(v).rend()
#define F first
#define S second
#define pb push_back
#define pu push
#define COUT(x) cout<<(x)<<endl
#define PQ priority_queue<ll>
#define PQR priority_queue<ll,vector<ll>,greater<ll>>
#define YES(n) cout << ((n) ? "YES" : "NO"  ) << endl
#define Yes(n) cout << ((n) ? "Yes" : "No"  ) << endl
#define mp make_pair
#define maxs(x,y) (x = max(x,y))
#define mins(x,y) (x = min(x,y))
#define sz(x) (int)(x).size()
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll MOD = 1000000007LL;
const ll INF = 1LL << 60;
using vll = vector<ll>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vvll = vector<vll>;
using vstr = vector<string>;
using pll = pair<ll, ll>;
int main(){
  string s;
  cin>>s;
  bool ans=true;
  for(int i=sz(s)-1;i>=0;i--){
    if(i-4>=0){
      if(s[i]=='m'&&s[i-1]=='a'&&s[i-2]=='e'&&s[i-3]=='r'&&s[i-4]=='d'){
        i-=4;
        continue;
      }
      else if(s[i]=='e'&&s[i-1]=='s'&&s[i-2]=='a'&&s[i-3]=='r'&&s[i-4]=='e'){
        i-=4;
        continue;
      }
    }
    if(i-6>=0){
      if(s[i]=='r'&&s[i-1]=='e'&&s[i-2]=='m'&&s[i-3]=='a'&&s[i-4]=='e'&&s[i-5]=='r'&&s[i-6]=='d'){
        i-=6;
        continue;
      }
    }
    if(i-5>=0){
      else if(s[i]=='r'&&s[i-1]=='e'&&s[i-2]=='s'&&s[i-3]=='a'&&s[i-4]=='r'&&s[i-5]=='e'){
        i-=5;
        continue;
      }
    }
    }
    ans=false;
    break;
  }
  YES(ans);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:58:7: error: expected '}' before 'else'
   58 |       else if(s[i]=='r'&&s[i-1]=='e'&&s[i-2]=='s'&&s[i-3]=='a'&&s[i-4]=='r'&&s[i-5]=='e'){
      |       ^~~~
a.cc:57:15: note: to match this '{'
   57 |     if(i-5>=0){
      |               ^
a.cc: At global scope:
a.cc:64:5: error: 'ans' does not name a type
   64 |     ans=false;
      |     ^~~
a.cc:65:5: error: expected unqualified-id before 'break'
   65 |     break;
      |     ^~~~~
a.cc:66:3: error: expected declaration before '}' token
   66 |   }
      |   ^
a.cc:20:16: error: 'cout' does not name a type
   20 | #define YES(n) cout << ((n) ? "YES" : "NO"  ) << endl
      |                ^~~~
a.cc:67:3: note: in expansion of macro 'YES'
   67 |   YES(ans);
      |   ^~~
a.cc:68:1: error: expected declaration before '}' token
   68 | }
      | ^
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 end_flag = false;
  bool f;

  int i = 0;

  while (!end_flag) {
    f = false;
    for (int j=0; j<4; j++) {
      if (s.substr(i, divide[j].size()) == divide[j]) {
        i += divide[j].size();
        f = true;
        break;
      }
    }
    if (!f || i == s.size()) end_flag = true;
  }

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

Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: 'reverse' was not declared in this scope
   11 |   reverse (s.begin(), s.end());
      |   ^~~~~~~
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[4]={"dream","dreamer","erase","eraser"};cin>>s;
  
  while(s.size()){
    bool f=0;
    REP(i,4) if(!(s.find(t[i]))){
      string ss=s.substr(t[i].size());
      if(!ss.size()) f=1;
      else REP(k,4) if(!(ss.find(t[k]))) f=1;
      if(f){
        s=ss;
        break;
      }
    }
    if(!f) break;
  }
  
  cout<<(f?"YES":"NO");
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:10: error: 'f' was not declared in this scope
   22 |   cout<<(f?"YES":"NO");
      |          ^
Language: C++

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

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

	string divide[4] = {"dream","dreamer","erase","eraser"};
    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();){
    	bool can2 = false;
    	for(int j = 0; j < 4; ++j){
    		string d = devide[j];
    		if(S.substr(i, d.size()) == d){
    			can2 = true;
    			i += d.size();
    		}
    	}
    	if(!can2){
    		can = false;
    		break;
    	}
    }

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

}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:38: error: 'devide' was not declared in this scope; did you mean 'divide'?
   15 |     for(int i=0; i < 4; ++i) reverse(devide[i].begin(), devide[i].end());
      |                                      ^~~~~~
      |                                      divide
a.cc:21:28: error: 'devide' was not declared in this scope; did you mean 'divide'?
   21 |                 string d = devide[j];
      |                            ^~~~~~
      |                            divide
Language: C++

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

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

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

    reverse(S.begin(),S.end());
    rep(i,4) reverse(devide[i].begin(), devide[i].end());

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

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

}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:9: error: 'i' was not declared in this scope
   15 |     rep(i,4) reverse(devide[i].begin(), devide[i].end());
      |         ^
a.cc:15:5: error: 'rep' was not declared in this scope
   15 |     rep(i,4) reverse(devide[i].begin(), devide[i].end());
      |     ^~~
a.cc:21:28: error: 'devide' was not declared in this scope; did you mean 'divide'?
   21 |                 string d = devide[j];
      |                            ^~~~~~
      |                            divide
Language: C++

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

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

	string divide[4] = ["dream","dreamer","erase","eraser"];
    string S;
    cin  >> S;

    reverse(S.begin(),S.end());
    rep(i,4) reverse(devide[i].begin(), devide[i].end());

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

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

}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:29: error: expected identifier before string constant
   10 |         string divide[4] = ["dream","dreamer","erase","eraser"];
      |                             ^~~~~~~
a.cc:10:36: error: expected ']' before ',' token
   10 |         string divide[4] = ["dream","dreamer","erase","eraser"];
      |                                    ^
      |                                    ]
a.cc: In lambda function:
a.cc:10:36: error: expected '{' before ',' token
a.cc: In function 'int main()':
a.cc:10:28: error: array must be initialized with a brace-enclosed initializer
   10 |         string divide[4] = ["dream","dreamer","erase","eraser"];
      |                            ^~~~~~~~
a.cc:10:37: error: expected unqualified-id before string constant
   10 |         string divide[4] = ["dream","dreamer","erase","eraser"];
      |                                     ^~~~~~~~~
a.cc:15:9: error: 'i' was not declared in this scope
   15 |     rep(i,4) reverse(devide[i].begin(), devide[i].end());
      |         ^
a.cc:15:5: error: 'rep' was not declared in this scope
   15 |     rep(i,4) reverse(devide[i].begin(), devide[i].end());
      |     ^~~
a.cc:21:28: error: 'devide' was not declared in this scope; did you mean 'divide'?
   21 |                 string d = devide[j];
      |                            ^~~~~~
      |                            divide
Language: C++

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

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

int main() {
  string s;
  cin>>s;
  reverse(s.begin(),s.end());
  for(int i=0; i<4; i++) reverse(div[i].begin(),div[i].end());
  
  bool j1 = true;
  for(int i=0; i<s.size();){
    bool j2 = false;
    for(int j=0; j<4; j++){
      string t = div[j];
      if(s.substr(i,t.size()) == t){
        j2 = true;
        i += t.size();
      }
    }
    if(!j2){
      j1 = false;
      break;
    }
  }
  if(j1) cout << "YES" << endl;
  else cout << "NO" << endl;
}

Compiler output:
a.cc:4:13: error: 'std::string div [4]' redeclared as different kind of entity
    4 | string div[4] = {"dream","dreamer","erase","eraser"};
      |             ^
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:42,
                 from a.cc:1:
/usr/include/stdlib.h:992:14: note: previous declaration 'div_t div(int, int)'
  992 | extern div_t div (int __numer, int __denom)
      |              ^~~
a.cc: In function 'int main()':
a.cc:10:37: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   10 |   for(int i=0; i<4; i++) reverse(div[i].begin(),div[i].end());
      |                                     ^
a.cc:10:52: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   10 |   for(int i=0; i<4; i++) reverse(div[i].begin(),div[i].end());
      |                                                    ^
a.cc:16:21: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   16 |       string t = div[j];
      |                     ^
Language: C


import java.util.*;

public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        String s=sc.next();
        String[] t = {"eraser","erase","dreamer","dream"};
        for(int i=0;i<4;i++)s=s.replace(t[i],"");
        System.out.println(s.equals("")?"YES":"NO");
        
    }
}


Compiler output:
main.c:2:1: error: unknown type name 'import'
    2 | import java.util.*;
      | ^~~~~~
main.c:2:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    2 | import java.util.*;
      |            ^
main.c:4:1: error: unknown type name 'public'
    4 | public class Main {
      | ^~~~~~
main.c:4:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'Main'
    4 | public class Main {
      |              ^~~~
Language: C++

using namespace std;
int main(){
  string S,T;
  int pos = 0;
  cin >> S;
  while (pos <= S.length()) {
    if (S.compare(pos, pos+7, "dreamer") == 0) {
      pos = pos+7;
      if (S.compare(pos, pos+4, "aser") == 0) {
        pos = pos-2;
      } else 
      if (S.compare(pos, pos+3, "ase") == 0) {
        pos = pos-2;
      }
    } else
    if (S.compare(pos, pos+5, "dream") == 0) {
      pos = pos+5;
    } else
    if (S.compare(pos, pos+6, "eraser") == 0) {
      pos = pos+6;
      if (S.compare(pos, pos+4, "aser") == 0) {
        pos = pos-2;
      } else 
      if (S.compare(pos, pos+3, "ase") == 0) {
        pos = pos-2;
      }
    } else
    if (S.compare(pos, pos+5, "erase") == 0) {
      pos = pos+5;
      if (S.compare(pos, pos+5, "raser") == 0) {
        pos = pos-1;
      } else 
      if (S.compare(pos, pos+4, "rase") == 0) {
        pos = pos-1;
      }
    } else {
      break;
    }
    if (pos == S.length()) {
      cout << "YES";
      return 0;
    }
    cout << pos << " ";
  }
  cout << "NO";
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'string' was not declared in this scope
    3 |   string S,T;
      |   ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | using namespace std;
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> S;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:5:10: error: 'S' was not declared in this scope
    5 |   cin >> S;
      |          ^
a.cc:40:7: error: 'cout' was not declared in this scope
   40 |       cout << "YES";
      |       ^~~~
a.cc:40:7: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:43:5: error: 'cout' was not declared in this scope
   43 |     cout << pos << " ";
      |     ^~~~
a.cc:43:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:45:3: error: 'cout' was not declared in this scope
   45 |   cout << "NO";
      |   ^~~~
a.cc:45:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
/*Sを反転させ、前から順に見ていって,dream,dreamer,erase,eraserのいずれかを反転させ
たもので、切れるかどうかを判定最後まで切れたらok
*/
//単純に前から切るとdreamで切るかdreamerで切るべきかわからない
int main(){
  string S;
  cin >> S
  vector<string> d = {"dream","dreamer","erase","eraser"};
  rep(i,4){
    reverse(d[i].begin(),d[i].end());
  }
  reverse(S.begin(),S.end());
  bool flag1 = true;
  
  for(int i = 0;i<S.size();){
    bool flag2 = false;//分割できるかどうか
    for(int j= 0;j<4;j++){
      if(S.substr(i,d[j].size()) == d[j]){
        i += d[j].size();
        flag2 = true;
        
      }
    }
    if(flag2 == false){//切れない時はflag1をfalseにしてループを終える
      flag1 = false;
      break;
    }
    
  }
  if(flag1) cout << "YES" <<endl;
  else cout << "NO" <<endl;

  
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: expected ';' before 'vector'
   11 |   cin >> S
      |           ^
      |           ;
   12 |   vector<string> d = {"dream","dreamer","erase","eraser"};
      |   ~~~~~~   
a.cc:14:13: error: 'd' was not declared in this scope
   14 |     reverse(d[i].begin(),d[i].end());
      |             ^
a.cc:22:21: error: 'd' was not declared in this scope
   22 |       if(S.substr(i,d[j].size()) == d[j]){
      |                     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
/*Sを反転させ、前から順に見ていって,dream,dreamer,erase,eraserのいずれかを反転させ
たもので、切れるかどうかを判定最後まで切れたらok
*/
//単純に前から切るとdreamで切るかdreamerで切るべきかわからない
int main(){
  string S;
  cin >> S
  vector<string> d = {"dream","dreamer","erase","eraser"};
  rep(i,4){
    reverse(d[i].begin(),d[i].end());
  }
  reverse(S.begin(),S.end());
  bool flag1 = true;
  
  for(int i = 0;i<S.size();){
    bool flag2 = false;//分割できるかどうか
    for(int j= 0;j<4;j++){
      if(S.substr(i,d[j].size()) == d[j]){
        i += d[j].size();
        flag2 = true;
        break;
      }
    }
    if(flag2 == false){//切れない時はflag1をfalseにしてループを終える
      flag1 = false;
      break;
    }
    
  }
  if(flag1) cout << "YES" <<endl;
  else cout << "NO" <<endl;

  
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: expected ';' before 'vector'
   11 |   cin >> S
      |           ^
      |           ;
   12 |   vector<string> d = {"dream","dreamer","erase","eraser"};
      |   ~~~~~~   
a.cc:14:13: error: 'd' was not declared in this scope
   14 |     reverse(d[i].begin(),d[i].end());
      |             ^
a.cc:22:21: error: 'd' was not declared in this scope
   22 |       if(S.substr(i,d[j].size()) == d[j]){
      |                     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
/*Sを反転させ、前から順に見ていって,dream,dreamer,erase,eraserのいずれかを反転させ
たもので、切れるかどうかを判定最後まで切れたらok
*/
//単純に前から切るとdreamで切るかdreamerで切るべきかわからない
int main(){
  string S;
  vector<string> d(4) = {"dream","dreamer","erase","eraser"};
  rep(i,4){
    reverse(d[i].begin(),d[i].end());
  }
  reverse(S.begin(),S.end());
  bool flag1 = true;
  
  for(int i = 0;i<S.size();){
    bool flag2 = false;//分割できるかどうか
    for(int j= 0;j<4;j++){
      if(S.substr(i,d[j].size()) == d[j]){
        i += d[j].size();
        flag2 = true;
        break;
      }
    }
    if(flag2 == false){//切れない時はflag1をfalseにしてループを終える
      flag1 = false;
      break;
    }
    
  }
  if(flag1) cout << "YES" <<endl;
  else cout << "NO" <<endl;

  
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:23: error: expected ',' or ';' before '=' token
   11 |   vector<string> d(4) = {"dream","dreamer","erase","eraser"};
      |                       ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
/*Sを反転させ、前から順に見ていって,dream,dreamer,erase,eraserのいずれかを反転させ
たもので、切れるかどうかを判定最後まで切れたらok
*/
//単純に前から切るとdreamで切るかdreamerで切るべきかわからない
int main(){
  string S;
  vector<string> d(4) = {"dream","dreamer","erase","eraser"};
  rep(i,4){
    reverse(d[i].begin(),d[i].end());
  }
  reverse(S.begin(),S.end());
  bool flag1 = true;
  
  for(int i = 0;i<S.size();i++){
    bool flag2 = false;//分割できるかどうか
    for(int j= 0;j<4;j++){
      if(S.substr(i,d[j].size()) == d[j]){
        i += d[j].size();
        flag2 = true;
        break;
      }
    }
    if(flag2 == false){//切れない時はflag1をfalseにしてループを終える
      flag1 = false;
      break;
    }
    
  }
  if(flag1) cout << "YES" <<endl;
  else cout << "NO" <<endl;

  
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:23: error: expected ',' or ';' before '=' token
   11 |   vector<string> d(4) = {"dream","dreamer","erase","eraser"};
      |                       ^
Language: C++

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

int main(){
  string S;
  cin >> S;
  vector<string> div = {"dream","dreamer","erase","eraser"};
  reverse(S.begin(),S.end());
  for (x:div){
    reverse(x.begin(),x.end());
  }
  bool = can;
  for (int i = 0; i < S.size();){
    bool can2 = false;
    can =  false;
    for (x: div){
      if(S.substr(i,x.size()) == x){
        can2 = true;
        i+=x.size();
      }
    }
    if(!can2)break;
    can = true;
  }
  
  if(can) cout << "YES" << endl;
  else cout << "NO" << endl;
 
  return 0;
}
      
      
      
      
      
      
      
      
  

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: found ':' in nested-name-specifier, expected '::'
    9 |   for (x:div){
      |         ^
      |         ::
a.cc:9:8: error: 'x' has not been declared
    9 |   for (x:div){
      |        ^
a.cc:12:8: error: expected unqualified-id before '=' token
   12 |   bool = can;
      |        ^
a.cc:13:3: error: expected primary-expression before 'for'
   13 |   for (int i = 0; i < S.size();){
      |   ^~~
a.cc:12:14: error: expected ')' before 'for'
   12 |   bool = can;
      |              ^
      |              )
   13 |   for (int i = 0; i < S.size();){
      |   ~~~         
a.cc:9:7: note: to match this '('
    9 |   for (x:div){
      |       ^
a.cc:15:5: error: 'can' was not declared in this scope; did you mean 'can2'?
   15 |     can =  false;
      |     ^~~
      |     can2
a.cc:16:11: error: found ':' in nested-name-specifier, expected '::'
   16 |     for (x: div){
      |           ^
      |           ::
a.cc:16:10: error: 'x' has not been declared
   16 |     for (x: div){
      |          ^
a.cc:22:5: error: expected primary-expression before 'if'
   22 |     if(!can2)break;
      |     ^~
a.cc:21:6: error: expected ';' before 'if'
   21 |     }
      |      ^
      |      ;
   22 |     if(!can2)break;
      |     ~~
a.cc:22:5: error: expected primary-expression before 'if'
   22 |     if(!can2)break;
      |     ^~
a.cc:21:6: error: expected ')' before 'if'
   21 |     }
      |      ^
      |      )
   22 |     if(!can2)break;
      |     ~~
a.cc:16:9: note: to match this '('
   16 |     for (x: div){
      |         ^
a.cc:26:6: error: 'can' was not declared in this scope; did you mean 'tan'?
   26 |   if(can) cout << "YES" << endl;
      |      ^~~
      |      tan
Language: Java

public class Main {

  public static void main(String[] args) {
    solve(System.in, System.out);
  }

  static void solve(InputStream is, PrintStream os) {
    Scanner sc = new Scanner(is);

    /* read */
    String s = sc.next();

    String[] words = {"dream", "dreamer", "erase", "eraser"};

    List<String> prefixes = new ArrayList<>();
    prefixes.add("");

    if (bfs(prefixes, words, s)) {
      os.println("YES");
    } else {
      os.println("NO");
    }
  }

  private static boolean bfs(List<String> prefixes, String[] words, String s) {
    while (!prefixes.isEmpty()) {
      List<String> matches = new ArrayList<>();
      for (String p : prefixes) {
        for (String w : words) {
          String t = p + w;
          if (s.equals(t)) return true;
          if (s.startsWith(t)) matches.add(t);
        }
      }
      prefixes = matches;
    }
    return false;
  }


}


Compiler output:
Main.java:7: error: cannot find symbol
  static void solve(InputStream is, PrintStream os) {
                    ^
  symbol:   class InputStream
  location: class Main
Main.java:7: error: cannot find symbol
  static void solve(InputStream is, PrintStream os) {
                                    ^
  symbol:   class PrintStream
  location: class Main
Main.java:25: error: cannot find symbol
  private static boolean bfs(List<String> prefixes, String[] words, String s) {
                             ^
  symbol:   class List
  location: class Main
Main.java:8: error: cannot find symbol
    Scanner sc = new Scanner(is);
    ^
  symbol:   class Scanner
  location: class Main
Main.java:8: error: cannot find symbol
    Scanner sc = new Scanner(is);
                     ^
  symbol:   class Scanner
  location: class Main
Main.java:15: error: cannot find symbol
    List<String> prefixes = new ArrayList<>();
    ^
  symbol:   class List
  location: class Main
Main.java:15: error: cannot find symbol
    List<String> prefixes = new ArrayList<>();
                                ^
  symbol:   class ArrayList
  location: class Main
Main.java:27: error: cannot find symbol
      List<String> matches = new ArrayList<>();
      ^
  symbol:   class List
  location: class Main
Main.java:27: error: cannot find symbol
      List<String> matches = new ArrayList<>();
                                 ^
  symbol:   class ArrayList
  location: class Main
9 errors
Language: Java

public class Main {

  public static void main(String[] args) {
    solve(System.in, System.out);
  }

  static void solve(InputStream is, PrintStream os) {
    Scanner sc = new Scanner(is);

    /* read */
    String s = sc.next();

    String[] words = {"dream", "dreamer", "erase", "eraser"};

    List<String> prefixes = new ArrayList<>();
    prefixes.add("");

    if (bfs(prefixes, words, s)) {
      os.println("Yes");
    } else {
      os.println("No");
    }
  }

  private static boolean bfs(List<String> prefixes, String[] words, String s) {
    while (!prefixes.isEmpty()) {
      List<String> matches = new ArrayList<>();
      for (String p : prefixes) {
        for (String w : words) {
          String t = p + w;
          if (s.equals(t)) return true;
          if (s.startsWith(t)) matches.add(t);
        }
      }
      prefixes = matches;
    }
    return false;
  }
}


Compiler output:
Main.java:7: error: cannot find symbol
  static void solve(InputStream is, PrintStream os) {
                    ^
  symbol:   class InputStream
  location: class Main
Main.java:7: error: cannot find symbol
  static void solve(InputStream is, PrintStream os) {
                                    ^
  symbol:   class PrintStream
  location: class Main
Main.java:25: error: cannot find symbol
  private static boolean bfs(List<String> prefixes, String[] words, String s) {
                             ^
  symbol:   class List
  location: class Main
Main.java:8: error: cannot find symbol
    Scanner sc = new Scanner(is);
    ^
  symbol:   class Scanner
  location: class Main
Main.java:8: error: cannot find symbol
    Scanner sc = new Scanner(is);
                     ^
  symbol:   class Scanner
  location: class Main
Main.java:15: error: cannot find symbol
    List<String> prefixes = new ArrayList<>();
    ^
  symbol:   class List
  location: class Main
Main.java:15: error: cannot find symbol
    List<String> prefixes = new ArrayList<>();
                                ^
  symbol:   class ArrayList
  location: class Main
Main.java:27: error: cannot find symbol
      List<String> matches = new ArrayList<>();
      ^
  symbol:   class List
  location: class Main
Main.java:27: error: cannot find symbol
      List<String> matches = new ArrayList<>();
                                 ^
  symbol:   class ArrayList
  location: class Main
9 errors
Language: C++

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

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

int main(){
  string s;
  cin >> s;
  
  //後ろから解く代わりに全ての文字列を「左右反転」する
  reverse(s.begin(), s.end());
  for (int i=0; i<4; ++i)
    reverse(divide[i].begin, divide[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devideできるか
    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:13:12: error: no matching function for call to 'reverse(<unresolved overloaded function type>, std::__cxx11::basic_string<char>::iterator)'
   13 |     reverse(divide[i].begin, divide[i].end());
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:1083:5: note: candidate: 'void std::reverse(_BIter, _BIter) [with _BIter = __gnu_cxx::__normal_iterator<char*, __cxx11::basic_string<char> >]'
 1083 |     reverse(_BidirectionalIterator __first, _BidirectionalIterator __last)
      |     ^~~~~~~
/usr/include/c++/14/bits/stl_algo.h:1083:36: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to '__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >'
 1083 |     reverse(_BidirectionalIterator __first, _BidirectionalIterator __last)
      |             ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:249:1: note: candidate: 'template<class _ExecutionPolicy, class _BidirectionalIterator> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::reverse(_ExecutionPolicy&&, _BidirectionalIterator, _BidirectionalIterator)'
  249 | reverse(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last);
      | ^~~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:249:1: note:   candidate expects 3 arguments, 2 provided
Language: C++

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

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

int main(){
  string s;
  cin >> s;
  
  //後ろから解く代わりに全ての文字列を「左右反転」する
  reverse(s.begin(), s.end());
  for (int i=0; i<4; ++i)
    reverse(devide[i].begin, devide[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devideできるか
    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:13:12: error: no matching function for call to 'reverse(<unresolved overloaded function type>, std::__cxx11::basic_string<char>::iterator)'
   13 |     reverse(devide[i].begin, devide[i].end());
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:1083:5: note: candidate: 'void std::reverse(_BIter, _BIter) [with _BIter = __gnu_cxx::__normal_iterator<char*, __cxx11::basic_string<char> >]'
 1083 |     reverse(_BidirectionalIterator __first, _BidirectionalIterator __last)
      |     ^~~~~~~
/usr/include/c++/14/bits/stl_algo.h:1083:36: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to '__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >'
 1083 |     reverse(_BidirectionalIterator __first, _BidirectionalIterator __last)
      |             ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:249:1: note: candidate: 'template<class _ExecutionPolicy, class _BidirectionalIterator> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::reverse(_ExecutionPolicy&&, _BidirectionalIterator, _BidirectionalIterator)'
  249 | reverse(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last);
      | ^~~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:249:1: note:   candidate expects 3 arguments, 2 provided
a.cc:20:18: error: 'divide' was not declared in this scope; did you mean 'devide'?
   20 |       string d = divide[j];
      |                  ^~~~~~
      |                  devide
Language: C++

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

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

int main(){
  string s;
  cin >> s;
  
  //後ろから解く代わりに全ての文字列を「左右反転」する
  reverse(s.begin(), s.end());
  for (int i=0; i<4; ++i)
    reverse(devide[i].begin, devide[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devideできるか
    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:13:13: error: 'devide' was not declared in this scope; did you mean 'divide'?
   13 |     reverse(devide[i].begin, devide[i].end());
      |             ^~~~~~
      |             divide
Language: C++

#include <iostream>
#include <string>

using namespace std;

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

  std::reverse(s.begin(),s.end());
  int i = 0;
  while(i<s.size()){
    int flag = 1;
    string subs5 = s.substr(i,5);
    string subs6 = s.substr(i,6);
    string subs7 = s.substr(i,7);
    if(subs5=="maerd"){
      i += 5;
      flag = 0;
    }
    
    if(subs5=="esare"){
      i += 5;
      flag = 0;
    }
    
    if(subs7=="remaerd"){
      i += 7;
      flag = 0;
    }

    if(subs6=="resare"){
      i += 6;
      flag = 0;
    }

    if(flag == 1){
      cout << "NO" << endl;
      return 0;
    }
    
  }

  cout << "YES" << endl;
  return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:11:8: error: 'reverse' is not a member of 'std'
   11 |   std::reverse(s.begin(),s.end());
      |        ^~~~~~~
Language: C++

#include <iostream>
#include <string>

using namespace std;

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

  std::reverse(s.begin(),s.end());
  int i = 0;
  while(i<s.size()){
    int flag = 1;
    string subs5 = s.substr(i,5);
    string subs6 = s.substr(i,6);
    string subs7 = s.substr(i,7);
    if(subs5=="maerd"){
      i += 5;
      flag = 0;
    }
    
    if(subs5=="esare"){
      i += 5;
      flag = 0;
    }
    
    if(subs7=="remaerd"){
      i += 7;
      flag = 0;
    }

    if(subs6=="resare"){
      i += 6;
      flag = 0;
    }

    if(flag == 1){
      cout << "NO" << endl;
      return 0;
    }
    
  }

  cout << "YES" << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:8: error: 'reverse' is not a member of 'std'
   11 |   std::reverse(s.begin(),s.end());
      |        ^~~~~~~
Language: C++

#include <iostream>
#include <string>

using namespace std;

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

  reverse(s.begin(),s.end());
  int i = 0;
  while(i<s.size()){
    int flag = 1;
    string subs5 = s.substr(i,5);
    string subs6 = s.substr(i,6);
    string subs7 = s.substr(i,7);
    if(subs5=="maerd"){
      i += 5;
      flag = 0;
    }
    
    if(subs5=="esare"){
      i += 5;
      flag = 0;
    }
    
    if(subs7=="remaerd"){
      i += 7;
      flag = 0;
    }

    if(subs6=="resare"){
      i += 6;
      flag = 0;
    }

    if(flag == 1){
      cout << "NO" << endl;
      return 0;
    }
    
  }

  cout << "YES" << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: 'reverse' was not declared in this scope
   11 |   reverse(s.begin(),s.end());
      |   ^~~~~~~
Language: C++

import java.util.*;

class Main{
    static boolean dp[] = new boolean[(int)1e5+10];
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        char[] s = in.next().toCharArray();
        dp[0] = true;
        for(int i = 0 ; i < s.length; i++){
            if(!dp[i])continue;
            if(i+5<=s.length&&s[i]=='d'&&s[i+1]=='r'&&s[i+2]=='e'&&s[i+3]=='a'&&s[i+4]=='m')
                dp[i+5] = true;
            if(i+7<=s.length&&s[i]=='d'&&s[i+1]=='r'&&s[i+2]=='e'&&s[i+3]=='a'&&s[i+4]=='m'&&s[i+5]=='e'&&s[i+6]=='r')
                dp[i+7] = true;
            if(i+5<=s.length&&s[i]=='e'&&s[i+1]=='r'&&s[i+2]=='a'&&s[i+3]=='s'&&s[i+4]=='e')
                dp[i+5] = true;
            if(i+6<=s.length&&s[i]=='e'&&s[i+1]=='r'&&s[i+2]=='a'&&s[i+3]=='s'&&s[i+4]=='e'&&s[i+5]=='r')
                dp[i+6] = true;
        }

        if(dp[s.length])
            System.out.println("YES");
        else System.out.println("NO");
    }
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.*;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:4:12: error: 'boolean' does not name a type; did you mean 'bool'?
    4 |     static boolean dp[] = new boolean[(int)1e5+10];
      |            ^~~~~~~
      |            bool
a.cc:5:11: error: expected ':' before 'static'
    5 |     public static void main(String[] args){
      |           ^~~~~~~
      |           :
a.cc:5:29: error: 'String' has not been declared
    5 |     public static void main(String[] args){
      |                             ^~~~~~
a.cc:5:38: error: expected ',' or '...' before 'args'
    5 |     public static void main(String[] args){
      |                                      ^~~~
a.cc:25:2: error: expected ';' after class definition
   25 | }
      |  ^
      |  ;
a.cc: In static member function 'static void Main::main(int*)':
a.cc:6:9: error: 'Scanner' was not declared in this scope
    6 |         Scanner in = new Scanner(System.in);
      |         ^~~~~~~
a.cc:7:13: error: structured binding declaration cannot have type 'char'
    7 |         char[] s = in.next().toCharArray();
      |             ^~
a.cc:7:13: note: type must be cv-qualified 'auto' or reference to cv-qualified 'auto'
a.cc:7:13: error: empty structured binding declaration
a.cc:7:16: error: expected initializer before 's'
    7 |         char[] s = in.next().toCharArray();
      |                ^
a.cc:8:9: error: 'dp' was not declared in this scope
    8 |         dp[0] = true;
      |         ^~
a.cc:9:29: error: 's' was not declared in this scope
    9 |         for(int i = 0 ; i < s.length; i++){
      |                             ^
a.cc:21:15: error: 's' was not declared in this scope
   21 |         if(dp[s.length])
      |               ^
a.cc:22:13: error: 'System' was not declared in this scope
   22 |             System.out.println("YES");
      |             ^~~~~~
a.cc:23:14: error: 'System' was not declared in this scope
   23 |         else System.out.println("NO");
      |              ^~~~~~