Untitled

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

int main() {

    string str;
    int count_plus = 0, count_minus = 0, count_dote_2 = 0;

    cin >> str;

    for (int i = 0; i < str.length(); i++) {
        if (str[i] == '2' || str[i] == '3') {
            str[i] = '5';
        }
    }
    cout << str;
    return 0;
}