题解

#include<iostream>  
using namespace std;  
int main() {  
    char n;  
    cin >> n;  
    if((n == 'y') || (n == 'Y')) {  
        cout << "Yes";  
    } else if((n == 'n') || (n == 'N')) {  
        cout << "No";  
    }  
    return 0;