oj.uz

Submission #31598

# Submission time Handle Problem Language Result Execution time Memory
31598 2017-08-30T02:37:04 Z minhtung0404 Hacker (BOI15_hac) C++14
0 / 100
 0 ms 17640 KB 
#include<bits/stdc++.h>
const int N = 5e5 + 5;
using namespace std;

deque <long long> mq;
long long n, a[2*N], sum[2*N], maxx, siz;

int main(){
    cin >> n;
    siz = (n+1)/2;
    for (int i = 1; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= 2*n; i++) a[i] = a[i-1] + a[i];
    for (int i = siz; i <= 2*n; i++) sum[i] = a[i] - a[i-siz];
    for (int i = 1; i <= 2*n; i++){
        while(mq.size() && sum[mq.front()] >= sum[i]) mq.pop_front();
        mq.push_front(i);
        if (i - mq.back() == siz) mq.pop_back();
        if (i >= siz) maxx = max(sum[mq.back()], maxx);
    }
    cout << maxx;
}

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 17640 KB Output is correct
2 Incorrect 0 ms 17640 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 17640 KB Output is correct
2 Incorrect 0 ms 17640 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 17640 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 17640 KB Output is correct
2 Incorrect 0 ms 17640 KB Output isn't correct
3 Halted 0 ms 0 KB -