제출 #1090693

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1090693		Kuzeuy54_	Zemljište (COCI22_zemljiste)	C++17	70 / 70	334 ms	4440 KiB

Main

#include <bits/stdc++.h>
#define fast cin.tie(0)->sync_with_stdio(0);
#define int long long 
#define inf ((int)1e18)
using namespace std;
const int N=501;
int arr[N][N], dp[N][N];

inline int sum(int x1,int y1,int x2,int y2){
	return dp[x2][y2]-dp[x1-1][y2]-dp[x2][y1-1]+dp[x1-1][y1-1];
}

int32_t main(){
	fast
    int n,m,a,b;
	cin>>n>>m>>a>>b;
	if(a>b) swap(a,b);
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			cin>>arr[i][j];
			dp[i][j]=arr[i][j]+dp[i-1][j]+dp[i][j-1]-dp[i-1][j-1];
		}
	}
	int ans=inf;
	for(int rowst = 1; rowst <= n; rowst++){
		for(int rownd = 1; rownd <= n; rownd++){
			int l=1,r=1;
			while(r<=m){
				int now=sum(rowst,l,rownd,r);
				ans=min(ans, abs(a-now)+abs(b-now));
				if(now>b){
					l++;
					if(l>r){
						r++;
					}
				}
				else if(now>=a){
					cout<<b-a<<"\n";
					return 0;
				}
				else{
					r++;
				}
			}
		}
	}
	cout<<ans<<"\n";
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 40 / 40