oj.uz

Submission #31671

# Submission time Handle Problem Language Result Execution time Memory
31671 2017-08-30T15:37:00 Z Dat160601 Hacker (BOI15_hac) C++14
0 / 100
 0 ms 9988 KB 
#include <bits/stdc++.h>
using namespace std;
int n,a[1000007],pre[1000007],ans=0;
deque <int> cur;
int main(){
    ios_base::sync_with_stdio(0);
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        a[n+i]=a[i];
    }
    int sz=(n/2)+(n%2);
    for(int i=1;i<=sz;i++){
        pre[1]+=a[i];
    }
    for(int i=2;i<=n;i++){
        pre[i]=pre[i-1]+a[i+sz-1]-a[i-1];
    }
    for(int i=n+1;i<=2*n;i++) pre[n+i]=pre[i];
    for(int i=1;i<=2*n;i++){
        while(!cur.empty() && pre[cur.front()]>=pre[i]) cur.pop_front();
        cur.push_back(i);
        if(i-cur.front()==sz) cur.pop_front();
        if(i>=sz) ans=max(ans,pre[cur.front()]);
    }
    cout<<ans;
}

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 9988 KB Output is correct
2 Incorrect 0 ms 9988 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 9988 KB Output is correct
2 Incorrect 0 ms 9988 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 9988 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 9988 KB Output is correct
2 Incorrect 0 ms 9988 KB Output isn't correct
3 Halted 0 ms 0 KB -