Submission #2151886

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Source Code Expand

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

const int N = 510;
const int INF = 1e9;

int n;
string a[N];
int res = INF;
int col[N];
bool any;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n;
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
        for (int j = 0; j < n; ++j) if (a[i][j] == '#') ++col[j], any = 1;
    }
    if (!any) {
        printf("-1\n"); return 0;
    }

    for (int i = 0; i < n; ++i) {
        int cur = 0;
        if (!col[i]) ++cur;
        for (int j = 0; j < n; ++j) {
            if (col[j] != n) ++cur;
        }
        for (int j = 0; j < n; ++j) {
            if (a[i][j] == '.') ++cur;
        }
        res = min(res, cur);
    }

    if (res != INF) printf("%d\n", res); else printf("-1\n");
}

Submission Info

Judge Result