#include<fstream> #include<iostream> #include<string> #include<map> #include<cmath> #include<algorithm> #include<vector> #include<list> #include<set> #include<cstring> #include<climits> #include<deque> #include<stack> #define JUDGE using namespace std; string S; string pat = "Yardi"; int main() { #ifndef JUDGE freopen("input.txt", "r", stdin); #endif int i; cin >> S; if (S.find(pat) != -1) cout << "YES\n"; else cout << "NO\n"; #ifndef JUDGE while (1); #endif return 0; }