Submission #3816273

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Source Code Expand

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

using namespace std;

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

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

  bool can = true;
  for(int i = 0; i < S.size();){
    bool can2 = false;
    for(string d : divide){
      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;
}

Submission Info

Judge Result