#include <bits/stdc++.h>

using namespace std;
int retrnd(int n){ //乱数生成
        std::random_device rnd;
        std::mt19937 mt(rnd());
         std::uniform_int_distribution<> rand100(0, n);
         return rand100(mt);
}

int main(){
    int s = retrnd(100);
    if(s <= 60)cout<<"Yes"<<endl;
    else cout<<"No"<<endl;
}