Submission #75953661

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define fast ios::sync_with_stdio(false); cin.tie(nullptr);
#define endl '\n'

class Solution {
public:

    // ek test solve
    void solve() {
        int n;
        cin >> n;

        string s, t;
        cin >> s >> t;

        string ans = s;
        bool bad = false;

        // har position check
        for (int i = 0; i < n; i++) {

            if (s[i] == t[i]) {
                // same hai to wahi rakho
                ans[i] = s[i];
            }
            else if (s[i] == '?') {
                // takahashi blank tha
                ans[i] = t[i];
            }
            else if (t[i] == '?') {
                // aoki blank tha
                ans[i] = s[i];
            }
            else {
                // dono different letters
                ans[i] = '!';
                bad = true;
            }
        }

        cout << ans << endl;
        cout << (bad ? "Yes" : "No") << endl;
    }
};

int main() {
    fast

    Solution obj;
    obj.solve();

    return 0;
}

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