Illuminati

#include <bits/stdc++.h>

using namespace std;

int dfs(int x, vector<vector<int>> &adj, vector<bool> &visited, int n) {

    queue<pair<int, int>> q;

    q.push({x, 1});

    int r = 1;

    while (!q.empty()) {

        pair<int, int> p = q.front();
        q.pop();

        int y = p.first;
        int d = p.second;

        visited[y] = true;

        if (d == 3) {
            if (y == x)
                r++;
            continue;
        }

        for (int z : adj[y]) {
            if (!visited[z] || z == x)
            q.push({ z, d+1 });
        }

    }

    return r;

}

int main() {

    int n;
    cin >> n;

    vector<vector<int>> adj(n);

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            char c;
            cin >> c;
            if (c == '1') {
                adj[i].push_back(j);
                //adj[j].push_back(i);
            }
        }
    }

    int r = 0;
    
    vector<bool> visited(n, false);

    for (int i = 0; i < n; i++) {
        if (!visited[i]) {
            r += dfs(i, adj, visited, n);
        }
    }

    cout << r/2 << endl;

}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: ACCEPTED

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: ACCEPTED

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: WRONG ANSWER

Test 16

Verdict: WRONG ANSWER

Test 17

Verdict: WRONG ANSWER

Test 18

Verdict: WRONG ANSWER

Test 19

Verdict: WRONG ANSWER

Test 20

Verdict: WRONG ANSWER

Test 21

Verdict: WRONG ANSWER

Test 22

Verdict: WRONG ANSWER

Test 23

Verdict: WRONG ANSWER

Test 24

Verdict: WRONG ANSWER

Test 25

Verdict: WRONG ANSWER

Test 26

Verdict: WRONG ANSWER

Test 27

Verdict: WRONG ANSWER

Test 28

Verdict: WRONG ANSWER

Test 29

Verdict: WRONG ANSWER

Test 30

Verdict: WRONG ANSWER

Test 31

Verdict: WRONG ANSWER

Test 32

Verdict: WRONG ANSWER

Test 33

Verdict: WRONG ANSWER

Test 34

Verdict: WRONG ANSWER

Test 35

Verdict: WRONG ANSWER

Test 36

Verdict: WRONG ANSWER

Test 37

Verdict: WRONG ANSWER

Test 38

Verdict: WRONG ANSWER

Test 39

Verdict: WRONG ANSWER

Test 40

Verdict: WRONG ANSWER

Test 41

Verdict: WRONG ANSWER

Test 42

Verdict: WRONG ANSWER

Test 43

Verdict: WRONG ANSWER

Test 44

Verdict: WRONG ANSWER

Test 45

Verdict: WRONG ANSWER

Test 46

Verdict: WRONG ANSWER

Test 47

Verdict: WRONG ANSWER

Test 48

Verdict: WRONG ANSWER

Test 49

Verdict: WRONG ANSWER

Test 50

Verdict: WRONG ANSWER

Test 51

Verdict: WRONG ANSWER

Test 52

Verdict: WRONG ANSWER

Test 53

Verdict: WRONG ANSWER