Submission #704899

#	Time	Username	Problem	Language	Result	Execution time	Memory
704899		guagua0407	Zemljište (COCI22_zemljiste)	C++17	70 / 70	484 ms	3276 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
#define all(x) x.begin(),x.end()

const ll mxn=505;
ll pre[mxn][mxn];

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll n,m;
    ll a,b;
    cin>>n>>m>>a>>b;
    if(a>b) swap(a,b);
    for(ll i=1;i<=n;i++){
        for(ll j=1;j<=m;j++){
            cin>>pre[i][j];
            pre[i][j]+=pre[i-1][j]+pre[i][j-1]-pre[i-1][j-1];
        }
    }
    ll ans=1e18;
    for(ll i=1;i<=n;i++){
        for(ll j=i;j<=n;j++){
            vector<ll> vec;
            for(ll k=0;k<=m;k++){
                vec.push_back(pre[j][k]-pre[i-1][k]);
            }
            int r=1;
            for(int l=0;l<m;l++){
                while(r<=m and vec[r]-vec[l]<a){
                    ans=min(ans,abs(vec[r]-vec[l]-a)+abs(vec[r]-vec[l]-b));
                    r++;
                }
                if(l<r and r<=m){
                    ans=min(ans,abs(vec[r]-vec[l]-a)+abs(vec[r]-vec[l]-b));
                }
            }
        }
    }
    cout<<ans;
}

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