#include <iostream> #include <vector> #include <algorithm> #include <cmath> #include <iomanip> #include <stack> #include <algorithm> #include <string> #include <map> #include <iterator> #include <set> #include <queue> using namespace std; int main() { string S; cin>>S; bool ok = false; for (int i = 2; i < S.size(); ++i) { if(S[i] == '5' and S[i-1] == '7' and S[i-2] == '5') { ok = true; } } if(ok) { cout << "YES" << endl; } else { cout << "NO" << endl; } return 0; }