Submission #789804

#	Time	Username	Problem	Language	Result	Execution time	Memory
789804		UmairAhmadMirza	Hacker (BOI15_hac)	C++14	0 / 100	1 ms	340 KiB

hac

/*********************ALLAH HO AKBAR***********************/
/************HAZRAT MUHAMMAD (Peace be upon him)***********/


#include <bits/stdc++.h>
using namespace std;
#define int long long
int const N=1e6+5;
int pre[N];
int arr[N];
int n;
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    cin>>n;
    int sm=0;
    for (int i = 1; i <=n; ++i){
        cin>>arr[i];
        sm+=arr[i];
    }
    for (int i = 1; i <=n; ++i)
        arr[i+n]=arr[i];
    int k=(n/2)+(n%2);
    for (int i = 1; i <=2*n; ++i)
        pre[i]=pre[i-1]+arr[i];
    vector<pair<int,int>> v;
    for (int i = 1; i <=n; ++i)
    {
        int chunk=pre[(i+k)-1]-pre[i-1];
        int chunk2=sm-chunk;
        if(chunk>=chunk2)
            v.push_back({chunk-chunk2,chunk});
    }
    sort(v.begin(), v.end());
    cout<<v[0].second<<endl;
    return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 40