Submission #704894

#	Time	Username	Problem	Language	Result	Execution time	Memory
704894		guagua0407	Zemljište (COCI22_zemljiste)	C++17	30 / 70	2072 ms	2288 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]);
            }
            for(int k=0;k<=m;k++){
                ll aa=vec[k]+a;
                ll bb=vec[k]+b;
                auto it1=lower_bound(all(vec),aa);
                auto it2=upper_bound(all(vec),bb);
                it2--;
                if(it1!=vec.end()){
                    ll cur=(*it1)-vec[k];
                    ans=min(ans,abs(cur-a)+abs(cur-b));
                }
                if(it2-vec.begin()>k){
                    ll cur=(*it2)-vec[k];
                    ans=min(ans,abs(cur-a)+abs(cur-b));
                }
            }
        }
    }
    cout<<ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 40