#include <bits/stdc++.h>
using namespace std;
int main(){
    srand(time(0));
    char randarr[10] = {'0','1','2','3','4','5','6','7','8','9'};
    random_shuffle(randarr, randarr+10);
    string ans, guess;
    for(int i=0;i<4;i++){
        ans += randarr[i];
    }
    cout << "The answer is:" << ans << endl;
    int a, b;
    while(1){
        a = b = 0;
        cout << "Your guess:";
        cin >> guess;
        cout << endl;
        if(ans == guess) break;
        for(int i=0;i<4;i++){
            if(guess[i] == ans[i]) a++;
            else if(ans.find(guess[i]) != string::npos) b++;
        }
        cout << a << "A" << b << "B" << endl;
    }
    cout << "Your guess is right!!!" << endl;
}