只需要判断后缀是否是 $qihangcang$ 即可

#include <iostream>
#include <string>
using namespace std;

int main() {
    int T;
    cin >> T; 
    
    while (T--) { 
        string s;
        cin >> s; /
        if (s.substr(s.size() - 10) == "qihangcang") {
            cout << "Yes\n" << s.substr(0, s.size() - 10) << "\n";
        } else {
            cout << "No\n";
        }
    }
    
    return 0;
}