#include <bits/stdc++.h>
#include "soccer.h"
#define ar array
#define ll long long
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
using namespace std;
template<typename T> bool ckmin(T &a, const T &b) { return a > b ? a = b, 1 : 0; }
template<typename T> bool ckmax(T &a, const T &b) { return a < b ? a = b, 1 : 0; }
int biggest_stadium(int n, std::vector<std::vector<int>> F)
{
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) if (!F[i][j]) {
vector<vector<bool>> vis(n, vector<bool>(n));
int L = i, R = i;
while (L && !F[L-1][j]) L--;
while (R+1 < n && !F[R+1][j]) R++;
for (int k = L; k <= R; k++) {
int L2 = j, R2 = j;
while (L2 && !F[k][L2-1]) L2--;
while (R2+1 < n && !F[k][R2+1]) R2++;
for (int l = L2; l <= R2; l++) vis[k][l] = 1;
}
L = j, R = j;
while (L && !F[i][L-1]) L--;
while (R+1 < n && !F[i][R+1]) R++;
for (int k = L; k <= R; k++) {
int L2 = i, R2 = i;
while (L2 && !F[L2-1][k]) L2--;
while (R2+1 < n && !F[R2+1][k]) R2++;
for (int l = L2; l <= R2; l++) vis[l][k] = 1;
}
for (int k = 0; k < n; k++) for (int l = 0; l < n; l++) {
if (!F[k][l] && !vis[k][l]) return 0;
}
}
}
int tot = 0;
for (int i = 0; i < n; i++) for (int j = 0; j < n; j++) tot += !F[i][j];
return tot;
vector<ar<int, 2>> ints(n);
int L = -1, R = -1;
for (int i = 0; i < n; i++) {
int u = 0;
for (int j = 0; j < n; j++) if (!F[i][j]) {
int r = j;
while (r+1 < n && !F[i][r+1]) r++;
ints[i] = {j, r};
if (++u == 2) return 0;
j = r;
}
if (u) {
if (!~L) L = i;
else {
if (R != i-1) return 0;
}
R = i;
}
}
int len = -1, idx = -1;
for (int i = L; i <= R; i++) {
if (ckmax(len, ints[i][1] - ints[i][0])) idx = i;
}
for (int i = idx-1; i >= L; i--) {
if (!(ints[i][0] >= ints[i+1][0] && ints[i][1] <= ints[i+1][1])) {
return 0;
}
}
for (int i = idx+1; i <= R; i++) {
if (!(ints[i][0] >= ints[i-1][0] && ints[i][1] <= ints[i-1][1])) {
return 0;
}
}
auto [L1, R1] = ints[L];
auto [L2, R2] = ints[R];
if (min(R1, R2) < min(L1, L2)) return 0;
int tot = 0;
for (int i = 0; i < n; i++) for (int j = 0; j < n; j++) tot += !F[i][j];
return tot;
}
Compilation message
soccer.cpp: In function 'int biggest_stadium(int, std::vector<std::vector<int> >)':
soccer.cpp:78:6: error: redeclaration of 'int tot'
78 | int tot = 0;
| ^~~
soccer.cpp:39:6: note: 'int tot' previously declared here
39 | int tot = 0;
| ^~~
