#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
#define ld long double
// 217
// 44
using namespace std;
const int MAXN = (int) 5e5 + 5;
int arr[MAXN + 1], n;
int pref[MAXN + 1], suff[MAXN + 1];
inline int get(int l, int r) {
if(l <= 0) {
return suff[n + l] + pref[r];
}
if(r > n) {
return suff[l] + pref[r - n];
}
return pref[r] - pref[l - 1];
}
inline int get(multiset <int> &mst, int x) {
if(mst.count(x) > 1) {
return x;
}
return *prev(mst.find(x));
}
int main() {
//ifstream cin("A.in");
//ofstream cout("A.out");
int i;
ios::sync_with_stdio(false);
cin.tie(0), cout.tie(0);
cin >> n;
for(i = 1; i <= n; i++) {
cin >> arr[i];
pref[i] = pref[i - 1] + arr[i];
}
for(i = n; i >= 1; i--) {
suff[i] = suff[i + 1] + arr[i];
}
multiset <int> mst;
int len = (n + 1) / 2;
for(i = 1; i <= len; i++) {
mst.insert(get(i - len + 1, i));
}
int ans = *mst.begin();
for(i = 2; i <= n; i++) {
mst.erase(mst.find(get(i - 1 - len + 1, i - 1)));
mst.insert(get(i, i + len - 1));
ans = max(ans, *mst.begin());
}
cout << ans;
//cin.close();
//cout.close();
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
380 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
380 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
2 ms |
376 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
376 KB |
Output is correct |
22 |
Correct |
3 ms |
504 KB |
Output is correct |
23 |
Correct |
4 ms |
504 KB |
Output is correct |
24 |
Correct |
3 ms |
504 KB |
Output is correct |
25 |
Correct |
4 ms |
504 KB |
Output is correct |
26 |
Correct |
4 ms |
504 KB |
Output is correct |
27 |
Correct |
2 ms |
376 KB |
Output is correct |
28 |
Correct |
2 ms |
376 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
4 ms |
504 KB |
Output is correct |
31 |
Correct |
3 ms |
504 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
4 ms |
504 KB |
Output is correct |
4 |
Correct |
43 ms |
3576 KB |
Output is correct |
5 |
Correct |
144 ms |
8248 KB |
Output is correct |
6 |
Correct |
186 ms |
10232 KB |
Output is correct |
7 |
Correct |
195 ms |
12280 KB |
Output is correct |
8 |
Correct |
547 ms |
20216 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
380 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
2 ms |
376 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
376 KB |
Output is correct |
22 |
Correct |
3 ms |
504 KB |
Output is correct |
23 |
Correct |
4 ms |
504 KB |
Output is correct |
24 |
Correct |
3 ms |
504 KB |
Output is correct |
25 |
Correct |
4 ms |
504 KB |
Output is correct |
26 |
Correct |
4 ms |
504 KB |
Output is correct |
27 |
Correct |
2 ms |
376 KB |
Output is correct |
28 |
Correct |
2 ms |
376 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
4 ms |
504 KB |
Output is correct |
31 |
Correct |
3 ms |
504 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
2 ms |
376 KB |
Output is correct |
34 |
Correct |
4 ms |
504 KB |
Output is correct |
35 |
Correct |
43 ms |
3576 KB |
Output is correct |
36 |
Correct |
144 ms |
8248 KB |
Output is correct |
37 |
Correct |
186 ms |
10232 KB |
Output is correct |
38 |
Correct |
195 ms |
12280 KB |
Output is correct |
39 |
Correct |
547 ms |
20216 KB |
Output is correct |
40 |
Correct |
6 ms |
888 KB |
Output is correct |
41 |
Correct |
11 ms |
1144 KB |
Output is correct |
42 |
Correct |
15 ms |
1500 KB |
Output is correct |
43 |
Correct |
137 ms |
8312 KB |
Output is correct |
44 |
Correct |
430 ms |
20188 KB |
Output is correct |
45 |
Correct |
51 ms |
4216 KB |
Output is correct |
46 |
Correct |
218 ms |
12280 KB |
Output is correct |
47 |
Correct |
526 ms |
20216 KB |
Output is correct |
48 |
Correct |
271 ms |
20344 KB |
Output is correct |
49 |
Correct |
254 ms |
19584 KB |
Output is correct |
50 |
Correct |
250 ms |
19576 KB |
Output is correct |