Submission #49118

#	Time	Username	Problem	Language	Result	Execution time	Memory
49118		faishol27	Hacker (BOI15_hac)	C++14	0 / 100	2 ms	488 KiB

hac

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

const int MAXE = 1e9+5;

int N, dapat;
ll  data[500005],
    total = 0,
    ans = 0,
    sliding = 0,
    selisih = MAXE;

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin >> N;
    dapat = (N+1)/2;

    for(int i=0;i<N;i++){
        cin >> data[i];
        total += data[i];
    }

    for(int i=0;i<dapat;i++) sliding += data[i];

    if(abs(total-2*sliding) < selisih){
        ans = max(total-sliding, sliding);
        selisih = abs(total-2*sliding);
    }
    
//    cout << sliding << endl;

    for(int i=1;i<N;i++){
        int right = (dapat+i-1)%N;
        sliding = sliding-data[i-1]+data[right];
        
        if(abs(total-2*sliding) < selisih){
            ans = max(total-sliding, sliding);
            selisih = abs(total-2*sliding);
        }

    //    cout << sliding << endl;
    }

    cout << ans << endl;
}

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