#include <bits/stdc++.h> #define F first #define S second using namespace std; typedef pair<int, int> pii; typedef long long ll; int a[500][500]; int f(int p, int q, int i, int j, int s) { int ans = min(p - i + 1, q - j + 1); ans = min(ans, 2*s - (p - i + 1)); ans = min(ans, 2*s - (q - j + 1)); return ans; } bool inside(int x, int y, int n, int m) { return (x >= 1 and y >= 1 and x <= n and y <= m); } int main() { int t, i, j, n, m, k, s; scanf("%d", &t); while(t--) { scanf("%d %d %d", &n, &m, &k); for(i = 1; i <= n; ++i) for(j = 1; j <= m; ++j) scanf("%d", &a[i][j]); int ans = 0; for(i = 1; i <= n; ++i) for(j = 1; j <= m; ++j) { for(s = ans + 1; inside(i + 2*s - 1 - 1, j + 2*s - 1 - 1, n, m); ++s) { bool ok = true; int x = 0; for(int p = i; p <= i + 2*s - 2; ++p) { for(int q = j; q <= j + 2*s - 2; ++q) { int r = f(p, q, i, j, s); if(a[p][q] > r) { ok = false; break; } x += (r - a[p][q]); } if(!ok) break; } if(ok and x <= k) ans = max(ans, s); else if(ok) break; } } cout << ans << endl; } return 0; }
Standard input is empty
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