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33 lines
1007 B
33 lines
1007 B
#include <bits/stdc++.h>
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using namespace std;
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const int N = 31;
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char a[N][N];
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int n, m, cnt;
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int main() {
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cin >> n >> m;
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for (int i = 0; i < n; i++)
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for (int j = 0; j < m; j++)
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cin >> a[i][j]; // a,b,c
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for (int e = 2; e <= min(m, n); e++) { // 枚举每个小正方形的边长
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for (int i = 0; i <= n - e; i++) { // 起点i
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for (int j = 0; j <= m - e; j++) { // 起点j
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bool f = true;
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for (int x = 0; x < e; x++) { // 遍历正方形中所有的其它位置，判断是不是与左上角的一致
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for (int y = 0; y < e; y++) {
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if (a[i][j] != a[i + x][j + y]) {
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f = false;
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break;
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}
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}
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if (!f) break;
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}
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if (f) cnt++;
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}
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}
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}
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cout << cnt << endl;
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return 0;
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} |