#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 2500 + 7;
char a[N][N];
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
int n, m;
cin >> n >> m;
if (n == 1 || m == 1) {
vector <int> aa;
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
char x;
cin >> x;
aa.push_back(x - '0');
}
}
int cnt = 1;
int res = 1e9;
for (int i = 1; i < max(n, m); i++) {
if (aa[i] != aa[i - 1]) {
if (aa[i - 1] == 1) {
res = min(res, cnt);
}
cnt = 0;
}
cnt++;
}
if (aa[max(n, m) - 1] == 1) {
res = min(res, cnt);
}
cout << res << '\n';
return 0;
}
if (max(n, m) > 100) {
//assert(0);
}
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
cin >> a[i][j];
}
}
int ans = 0;
for (int x = 1; x <= n; x++) {
int bl = 1, br = m;
while (bl <= br) {
int y = (bl + br) / 2;
char b[n + 7][m + 7];
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
b[i][j] = a[i][j];
}
}
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
if (i + x - 1 > n || j + y - 1 > m) {
continue;
}
bool bad = false;
for (int r = i; r <= i + x - 1; r++) {
for (int c = j; c <= j + y - 1; c++) {
if (b[r][c] == '0') {
bad = true;
}
if (bad) break;
}
if (bad) break;
}
if (bad) continue;
for (int r = i; r <= i + x - 1; r++) {
for (int c = j; c <= j + y - 1; c++) {
b[r][c] = '2';
}
}
}
}
bool good = true;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
if (a[i][j] == '0') {
continue;
}
if (a[i][j] == '1' && b[i][j] == '2') {
continue;
}
good = false;
if (!good) break;
}
if (!good) break;
}
if (good) {
bl = y + 1;
ans = max(ans, x * y);
} else {
br = y - 1;
}
}
cout << ans << '\n';
return 0;
}
Compilation message
bomb.cpp: In function 'int main()':
bomb.cpp:107:1: error: expected '}' at end of input
}
^
