Submission #1059178

#	Time	Username	Problem	Language	Result	Execution time	Memory
1059178		hasan2006	Soccer Stadium (IOI23_soccer)	C++17	1.50 / 100	172 ms	55312 KiB

soccer

#include <bits/stdc++.h>
#include "soccer.h"
using namespace std;

#define TL ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define rall(s) s.rbegin(),s.rend()
#define all(s) s.begin(),s.end()
#define pb push_back
#define se second
#define fi first
#define ll long long
#define ld long double
#define YES cout<<"YES\n"
#define Yes cout<<"Yes\n"
#define yes cout<<"yes\n"
#define NO cout<<"NO\n"
#define No cout<<"No\n"
#define no cout<<"no\n"


const int N = 2e3 + 9 , mod = 1e9 + 7;
ll  b[N] , dp[N] , c[N] , d[N] , us[N][N] ;
vector<vector<int>>a;
void dfs(int i , int j , int n) {
    if(!us[i][j])
        us[i][j] = 1;
    if(j && !a[i][j - 1] && !us[i][j - 1])
        dfs(i , j - 1 , n);
    if(i && !a[i - 1][j] && !us[i - 1][j])
        dfs(i  - 1, j  , n);
    if(j + 1 < n && !a[i][j + 1] && !us[i][j + 1])
        dfs(i , j + 1 , n);
    if(i + 1 < n && !a[i + 1][j] && !us[i + 1][j])
        dfs(i  + 1, j , n);
}
int biggest_stadium(int n , vector<vector<int>>a) {
    ll i , j ,  l,  r , s  = 0 , f  = 0 , x , y , k , m ;
    ::a = a;
    y = 0;
    for(i = 0; i < n; i++) {
        s = 0;
        for(j = 0; j < n; j++) {
            f += 1 - a[i][j];
            if(a[i][j] == 0 && s == 0)
                s = 1;
            else if(a[i][j] == 1 && s == 1)
                s = 2;
            else if(a[i][j] == 0 && s == 2)
                s = -1;
        }
        if(s == -1)
            return f - 1;
    }
    for(i = 0; i < n; i++) {
        s = 0;
        for(j = 0; j < n; j++) {
            if(a[j][i] == 0 && s == 0)
                s = 1;
            else if(a[j][i] == 1 && s == 1)
                s = 2;
            else if(a[j][i] == 0 && s == 2)
                s = -1;
        }
        if(s == -1)
            return f - 1;
    }
    for(i = 0; i < n; i++)
        for(j = 0; j < n; j++)
            if(!us[i][j] && !a[i][j])
                dfs(i , j , n) , y++;
    if(y <= 1)
        return f;
    else
        return f - 1;
}

Compilation message (stderr)

soccer.cpp: In function 'int biggest_stadium(int, std::vector<std::vector<int> >)':
soccer.cpp:37:17: warning: unused variable 'l' [-Wunused-variable]
   37 |     ll i , j ,  l,  r , s  = 0 , f  = 0 , x , y , k , m ;
      |                 ^
soccer.cpp:37:21: warning: unused variable 'r' [-Wunused-variable]
   37 |     ll i , j ,  l,  r , s  = 0 , f  = 0 , x , y , k , m ;
      |                     ^
soccer.cpp:37:43: warning: unused variable 'x' [-Wunused-variable]
   37 |     ll i , j ,  l,  r , s  = 0 , f  = 0 , x , y , k , m ;
      |                                           ^
soccer.cpp:37:51: warning: unused variable 'k' [-Wunused-variable]
   37 |     ll i , j ,  l,  r , s  = 0 , f  = 0 , x , y , k , m ;
      |                                                   ^
soccer.cpp:37:55: warning: unused variable 'm' [-Wunused-variable]
   37 |     ll i , j ,  l,  r , s  = 0 , f  = 0 , x , y , k , m ;
      |                                                       ^

• Subtask 0: 0 / 0
• Subtask 1: 1.5 / 6
• Subtask 2: 0 / 8
• Subtask 3: 0 / 22
• Subtask 4: 0 / 18
• Subtask 5: 0 / 16
• Subtask 6: 0 / 30