Submission #1307464

---

Source Code Expand

#include <iostream>
#include <string>

using namespace std;

int main() {
	// your code goes here
	string T[4] = {"dreamr", "dream", "eraser", "erase"};
	string s;
	int i=0, l;
	
	cin >> s;
	
	while(s.size() != 0){
		if(i == 4) {
			cout << "NO" << endl;
			return 0;
		}
		if(s.find(T[i]) != -1){
			l = s.find(T[i]);
			if(l == 1) s.erase(l-1, T[i].size());
			else s.erase(l, T[i].size());
			i = 0;
		}else{
			i++;
		}
	}
	cout << "YES" << endl;
	return 0;
}

Submission Info

Judge Result