Lehmät

#include <bits/stdc++.h>

using namespace std;
int n, m, c, c_t;
bool w;
vector<string> ns;

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

    c = 0; w = false; c_t = 0;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            if (ns[i][j] == '*' && !w) w = true;
            else if (ns[i][j] == '*' && w && (ns[i][j-1] != '@' || ns[i][j-1] != '.'))
                w = false;
            else if (ns[i][j] == '@' && w) c_t++;
            if (j+1 == m && ns[i][j+1] != '*' && w) c_t = 0;
        }
        c += c_t;
        c_t = 0;
        w = false;
    }

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

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: ACCEPTED

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: ACCEPTED