C++

#include<bits/stdc++.h>//submitRecord//
using namespace std;
//const int N=1e7+10;
int main(){
//freopen("","r",stdin);
//freopen("","w",stdout);
ios::sync_with_stdio();
cin.tie(nullptr);
cout.tie(nullptr);
string n;
cin>>n;
if(n=="y") cout<<"Yes";
else if(n=="Y") cout<<"Yes";
else cout<<"No";
//fclose(stdin);
//fclose(stdout);
return 0;
}