Lehmät

#include <bits/stdc++.h>

using namespace std;
int n, m, c, l;
vector<string> ns;

int main() {
    cin >> n >> m;
    ns.resize(n);
    for (int i = 0; i < n; i++)
        cin >> ns[i];

    c = 0; l = 0;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            if (ns[i][j] == '@' && l%2 != 0) c++;
            else if (ns[i][j] == '*') l++;
        }
        l = 0;
    }

    cout << c << "\n";
}

/*
10 10
..........
.@........
**********
*..@@@@@.*
*@......@*
**********
@.........
..........
..........
..........
*/

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 1, 2

Verdict: WRONG ANSWER

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: WRONG ANSWER