Bittijono

input/code.cpp: In function 'void solve()':
input/code.cpp:34:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for (int i = 0; i < d.size(); i++) {
      |                     ~~^~~~~~~~~~

#include <bits/stdc++.h>

using namespace std;


void solve() {
    int n, a, b;
    cin >> n >> a >> b;
    string sa, sb;
    cin >> sa;
    cin >> sb;
    vector<int> v(n);
    for (int i = 0; i < n; i++) {
        if (sa[i] == sb[i]) {
            v[i] = 1;
        } else {
            v[i] = 0;
        }
    }

    vector<pair<int, int>> d;
    int cnt = 1;
    for (int i = 0; i < n - 1; i++) {
        if (v[i] != v[i + 1]) {
            d.push_back({cnt, v[i]});
            cnt = 1;
        } else {
            cnt++;
        }
    }
    d.push_back({cnt, v[n - 1]});

    long long ans = 0;
    for (int i = 0; i < d.size(); i++) {
        if (d[i].second == 0) {
            ans++;
        }
    }

    cout << (long long) b * ans << '\n';
}

int main() {
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}

Test 1 (public)

Group: 1, 3

Verdict: WRONG ANSWER

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

Test 3

Group: 1, 3

Verdict: WRONG ANSWER

Test 4

Group: 1, 3

Verdict: WRONG ANSWER

Test 5

Group: 1, 3

Verdict: WRONG ANSWER

Test 6

Group: 3

Verdict: WRONG ANSWER

Test 7

Group: 2, 3

Verdict: ACCEPTED

Test 8

Group: 3

Verdict: WRONG ANSWER

Test 9

Group: 2, 3

Verdict: ACCEPTED

Test 10

Group: 2, 3

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: WRONG ANSWER

Test 12

Group: 2, 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: WRONG ANSWER

Test 14

Group: 3

Verdict: WRONG ANSWER

Test 15

Group: 3

Verdict: WRONG ANSWER

Test 16

Group: 1, 2, 3

Verdict: ACCEPTED

Test 17

Group: 1, 3

Verdict: WRONG ANSWER

Test 18

Group: 1, 3

Verdict: ACCEPTED

Test 19

Group: 3

Verdict: ACCEPTED

Test 20

Group: 3

Verdict: ACCEPTED