Submission #1065259

#	Time	Username	Problem	Language	Result	Execution time	Memory
1065259		LittleOrange	축구 경기장 (IOI23_soccer)	C++17	6 / 100	195 ms	39560 KiB

soccer

#include "soccer.h"
#include<bits/stdc++.h>
using namespace std;
using ll = int;
struct pos{
    ll x,y;
    bool operator<(const pos &o) const{
        return x!=o.x?x<o.x:y<o.y;
    }
};
struct dsu{
    ll c;
    vector<ll> p;
    dsu(ll N):c(N),p(N,-1){}
    ll g(ll i){
        return p[i]<0?i:p[i] = g(p[i]);
    }
    bool m(ll a, ll b){
        a = g(a),b=g(b);
        if(a==b) return false;
        c--;
        if(p[a]>p[b]) swap(a,b);
        p[a] += p[b];
        p[b] = a;
        return true;
    }
};
int biggest_stadium(int N, std::vector<std::vector<int>> F)
{
    auto &a = F;
    ll n = N;
    vector<pos> v;
    for(ll i = 0;i<n;i++){
        for(ll j = 0;j<n;j++){
            if (F[i][j]){
                ll v1 = j*n+(n-i-1)*(n-j);
                ll v2 = j*n+i*(n-j);
                ll v3 = (n-j-1)*n+(n-i-1)*(j+1);
                ll v4 = (n-j-1)*n+i*(j+1);
                return max({v1,v2,v3,v4});
            }
        }
    }
    return n*n;
    return 0;
}

Compilation message (stderr)

soccer.cpp: In function 'int biggest_stadium(int, std::vector<std::vector<int> >)':
soccer.cpp:30:11: warning: unused variable 'a' [-Wunused-variable]
   30 |     auto &a = F;
      |           ^

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