#include "bits/stdc++.h"
//#define int long long
#define all(v) v.begin() , v.end()
#define sz(a) (int)a.size()
using namespace std;
#include "soccer.h"
int dp[8][8][8][8][8][8];
vector<vector<int>> ar;
int ans=0,n;
const int INF = 1e7;
int calc(int a,int b,int c,int d,int e,int f){
if(dp[a][b][c][d][e][f]!=-1) return dp[a][b][c][d][e][f];
int cevv=0;
for(int i=b;i<=c;i++) if(ar[a][i]) return dp[a][b][c][d][e][f]=-INF;
for(int i=e;i<=f;i++) if(ar[d][i]) return dp[a][b][c][d][e][f]=-INF;
if(a>0){
for(int i=0;i<n;i++){
for(int j=i;j<n;j++){
if(ar[a-1][j]) break;
if(b<=i && j<=c && ((i<=e && f<=j) || (e<=i && j<=f)) ) cevv=max(cevv,calc(a-1,i,j,d,e,f)+j-i+1);
}
}
}
if(d+1<n){
for(int i=0;i<n;i++){
for(int j=i;j<n;j++){
if(ar[d+1][j]) break;
if(e<=i && j<=f && ((i<=b && c<=j) || (b<=i && j<=c)) ) cevv=max(cevv,calc(a,b,c,d+1,i,j)+j-i+1);
}
}
}
return dp[a][b][c][d][e][f]=cevv;
}
int biggest_stadium(int N, vector<vector<int>> xd){
memset(dp,-1,sizeof(dp));
ar=xd;n=N;
/*if(n<=7){
for(int i=0;i<n;i++){
for(int j=0;j<n;j++){
for(int k=j;k<n;k++){
if(ar[i][k]) break;
ans=max(ans,calc(i,j,k,i,j,k)+k-j+1);
}
}
}
return ans;
}*/
array<int,2> row[n],col[n];
for(int i=0;i<n;i++){
array<int,2> lol={-1,-1};
for(int j=0;j<n;j++){
if(!ar[i][j]){
if(lol[0]==-1) lol={j,j};
else if(lol[1]==j-1) lol[1]++;
else return 23;
}
}
row[i]=lol;
}
for(int i=1;i<n;i++){
bool ok=0;
if(row[i-1][0]<=row[i][0] && row[i][1]<=row[i-1][1]) ok=1;
if(row[i][0]<=row[i-1][0] && row[i-1][1]<=row[i][1]) ok=1;
if(!ok) return 23;
}
for(int j=0;j<n;j++){
array<int,2> lol={-1,-1};
for(int i=0;i<n;i++){
if(!ar[i][j]){
if(lol[0]==-1) lol={i,i};
else if(lol[1]==i-1) lol[1]++;
else return 23;
}
}
col[i]=lol;
}
for(int i=1;i<n;i++){
bool ok=0;
if(col[i-1][0]<=col[i][0] && col[i][1]<=col[i-1][1]) ok=1;
if(col[i][0]<=col[i-1][0] && col[i-1][1]<=col[i][1]) ok=1;
if(!ok) return 23;
}
int cnt=0;
for(int i=0;i<n;i++)
for(int j=0;j<n;j++) cnt+=(ar[i][j]==0);
return cnt;
}
/*void _(){
}
int32_t main(){
cin.tie(0); ios::sync_with_stdio(0);
int tc=1;//cin >> tc;
while(tc--) _();
return 0;
}*/
Compilation message
soccer.cpp: In function 'int biggest_stadium(int, std::vector<std::vector<int> >)':
soccer.cpp:82:8: error: 'i' was not declared in this scope
82 | col[i]=lol;
| ^
