#include<bits/stdc++.h>
using namespace std;
const int N = 1000006;
int n, A[N], P[N], G[N], MN[N * 2];
inline void Set(int i, int val)
{
for (i += n + n - 1; i; i >>= 1)
MN[i] = min(MN[i], val);
}
inline int Get(int l, int r)
{
int Mn = INT_MAX;
l += n + n - 1;
r += n + n - 1;
for (; l < r; l >>= 1, r >>= 1)
{
if (l & 1) Mn = min(Mn, MN[l]), l ++;
if (r & 1) r --, Mn = min(Mn, MN[r]);
}
return (Mn);
}
int main()
{
scanf("%d", &n);
for (int i = 1; i <= n; i++)
scanf("%d", &A[i]), A[i + n] = A[i];
int len = (n + 1) >> 1;
for (int i = n; i < n + len; i++)
P[n] += A[i];
for (int i = n - 1; i; i--)
P[i] = P[i + 1] + A[i] - A[i + len];
for (int i = n + 1; i <= n + n; i++)
P[i] = P[i - n];
memset(MN, 63, sizeof(MN));
for (int i = 1; i <= n + n; i++)
Set(i, P[i]);
int Mx = 0;
for (int i = n + 1; i <= n + n; i++)
{
int le = (n - 2) >> 1;
if (n & 1)
le = (n - 2 + 1) >> 1;
Mx = max(Mx, Get(i - le, i + 1));
}
return !printf("%d", Mx);
}
Compilation message
hac.cpp: In function 'int main()':
hac.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &n);
~~~~~^~~~~~~~~~
hac.cpp:26:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &A[i]), A[i + n] = A[i];
~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
8188 KB |
Output is correct |
| 2 |
Correct |
8 ms |
8188 KB |
Output is correct |
| 3 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 4 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 5 |
Correct |
7 ms |
8184 KB |
Output is correct |
| 6 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 7 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 8 |
Correct |
8 ms |
8108 KB |
Output is correct |
| 9 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 10 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 11 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 12 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 13 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 14 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 15 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 16 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 17 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 18 |
Correct |
8 ms |
8184 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
8188 KB |
Output is correct |
| 2 |
Correct |
8 ms |
8188 KB |
Output is correct |
| 3 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 4 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 5 |
Correct |
7 ms |
8184 KB |
Output is correct |
| 6 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 7 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 8 |
Correct |
8 ms |
8108 KB |
Output is correct |
| 9 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 10 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 11 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 12 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 13 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 14 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 15 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 16 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 17 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 18 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 19 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 20 |
Correct |
8 ms |
8156 KB |
Output is correct |
| 21 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 22 |
Correct |
8 ms |
8312 KB |
Output is correct |
| 23 |
Correct |
9 ms |
8184 KB |
Output is correct |
| 24 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 25 |
Correct |
9 ms |
8312 KB |
Output is correct |
| 26 |
Correct |
9 ms |
8184 KB |
Output is correct |
| 27 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 28 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 29 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 30 |
Correct |
9 ms |
8184 KB |
Output is correct |
| 31 |
Correct |
9 ms |
8192 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 2 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 3 |
Correct |
9 ms |
8312 KB |
Output is correct |
| 4 |
Correct |
25 ms |
9720 KB |
Output is correct |
| 5 |
Correct |
48 ms |
12280 KB |
Output is correct |
| 6 |
Correct |
60 ms |
13236 KB |
Output is correct |
| 7 |
Correct |
72 ms |
14328 KB |
Output is correct |
| 8 |
Correct |
122 ms |
18168 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
8 ms |
8188 KB |
Output is correct |
| 2 |
Correct |
8 ms |
8188 KB |
Output is correct |
| 3 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 4 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 5 |
Correct |
7 ms |
8184 KB |
Output is correct |
| 6 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 7 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 8 |
Correct |
8 ms |
8108 KB |
Output is correct |
| 9 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 10 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 11 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 12 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 13 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 14 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 15 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 16 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 17 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 18 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 19 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 20 |
Correct |
8 ms |
8156 KB |
Output is correct |
| 21 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 22 |
Correct |
8 ms |
8312 KB |
Output is correct |
| 23 |
Correct |
9 ms |
8184 KB |
Output is correct |
| 24 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 25 |
Correct |
9 ms |
8312 KB |
Output is correct |
| 26 |
Correct |
9 ms |
8184 KB |
Output is correct |
| 27 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 28 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 29 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 30 |
Correct |
9 ms |
8184 KB |
Output is correct |
| 31 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 32 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 33 |
Correct |
8 ms |
8184 KB |
Output is correct |
| 34 |
Correct |
9 ms |
8312 KB |
Output is correct |
| 35 |
Correct |
25 ms |
9720 KB |
Output is correct |
| 36 |
Correct |
48 ms |
12280 KB |
Output is correct |
| 37 |
Correct |
60 ms |
13236 KB |
Output is correct |
| 38 |
Correct |
72 ms |
14328 KB |
Output is correct |
| 39 |
Correct |
122 ms |
18168 KB |
Output is correct |
| 40 |
Correct |
9 ms |
8440 KB |
Output is correct |
| 41 |
Correct |
12 ms |
8568 KB |
Output is correct |
| 42 |
Correct |
13 ms |
8824 KB |
Output is correct |
| 43 |
Correct |
49 ms |
12168 KB |
Output is correct |
| 44 |
Correct |
115 ms |
18168 KB |
Output is correct |
| 45 |
Correct |
27 ms |
10108 KB |
Output is correct |
| 46 |
Correct |
78 ms |
14172 KB |
Output is correct |
| 47 |
Correct |
120 ms |
18208 KB |
Output is correct |
| 48 |
Correct |
121 ms |
18488 KB |
Output is correct |
| 49 |
Correct |
121 ms |
17612 KB |
Output is correct |
| 50 |
Correct |
112 ms |
17548 KB |
Output is correct |
