#include <bits/stdc++.h>
using namespace std;
const int len = 5e5+5, inf = 1e9;
int arr[len], out[len], val[4*len], n;
void build(int p, int l, int r){
val[p] = inf;
if (l == r)
return;
int mid = (l+r)/2;
build(2*p, l, mid);
build(2*p+1, mid+1, r);
}
void prop(int p, int l, int r){
if (val[p] == inf || l == r)
return;
val[2*p] = min(val[2*p], val[p]);
val[2*p+1] = min(val[2*p+1], val[p]);
val[p] = inf;
}
void upd(int p, int l, int r, int i, int j, int v){
prop(p, l, r);
if (r < i || j < l)
return;
if (i <= l && r <= j)
return void(val[p] = min(val[p], v));
int mid = (l+r)/2;
upd(2*p, l, mid, i, j, v);
upd(2*p+1, mid+1, r, i, j, v);
}
int ask(int p, int l, int r){
prop(p, l, r);
if (l == r)
return val[p];
int mid = (l+r)/2;
return max(ask(2*p, l, mid), ask(2*p+1, mid+1, r));
}
void change(int i, int j, int v){
if (i <= j){
upd(1, 0, n-1, i, j, v);
}
else{
upd(1, 0, n-1, i, n-1, v);
upd(1, 0, n-1, 0, j, v);
}
}
int main(){
scanf("%d", &n);
for (int i = 0; i < n; i++)
scanf("%d", &arr[i]);
build(1, 0, n-1);
int k = (n+1)/2;
for (int i = 0, j = 0, sum = 0; i < n; i++){
while ((n+j-i)%n < k){
sum += arr[j];
j = (j+1)%n;
}
change(i, (j+n-1)%n, sum);
sum -= arr[i];
}
printf("%d\n", ask(1, 0, n-1));
return 0;
}
Compilation message
hac.cpp: In function 'int main()':
hac.cpp:59:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &n);
~~~~~^~~~~~~~~~
hac.cpp:61:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &arr[i]);
~~~~~^~~~~~~~~~~~~~~
| # |
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 |
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 |
256 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 |
252 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 |
376 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 |
256 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 |
252 KB |
Output is correct |
| 18 |
Correct |
2 ms |
376 KB |
Output is correct |
| 19 |
Correct |
2 ms |
380 KB |
Output is correct |
| 20 |
Correct |
3 ms |
376 KB |
Output is correct |
| 21 |
Correct |
2 ms |
376 KB |
Output is correct |
| 22 |
Correct |
3 ms |
376 KB |
Output is correct |
| 23 |
Correct |
6 ms |
376 KB |
Output is correct |
| 24 |
Correct |
3 ms |
376 KB |
Output is correct |
| 25 |
Correct |
5 ms |
376 KB |
Output is correct |
| 26 |
Correct |
4 ms |
452 KB |
Output is correct |
| 27 |
Correct |
2 ms |
256 KB |
Output is correct |
| 28 |
Correct |
2 ms |
252 KB |
Output is correct |
| 29 |
Correct |
2 ms |
256 KB |
Output is correct |
| 30 |
Correct |
4 ms |
376 KB |
Output is correct |
| 31 |
Correct |
4 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 |
252 KB |
Output is correct |
| 3 |
Correct |
5 ms |
376 KB |
Output is correct |
| 4 |
Correct |
48 ms |
1712 KB |
Output is correct |
| 5 |
Correct |
120 ms |
4088 KB |
Output is correct |
| 6 |
Correct |
160 ms |
4472 KB |
Output is correct |
| 7 |
Correct |
193 ms |
7032 KB |
Output is correct |
| 8 |
Correct |
324 ms |
8628 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 |
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 |
256 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 |
252 KB |
Output is correct |
| 18 |
Correct |
2 ms |
376 KB |
Output is correct |
| 19 |
Correct |
2 ms |
380 KB |
Output is correct |
| 20 |
Correct |
3 ms |
376 KB |
Output is correct |
| 21 |
Correct |
2 ms |
376 KB |
Output is correct |
| 22 |
Correct |
3 ms |
376 KB |
Output is correct |
| 23 |
Correct |
6 ms |
376 KB |
Output is correct |
| 24 |
Correct |
3 ms |
376 KB |
Output is correct |
| 25 |
Correct |
5 ms |
376 KB |
Output is correct |
| 26 |
Correct |
4 ms |
452 KB |
Output is correct |
| 27 |
Correct |
2 ms |
256 KB |
Output is correct |
| 28 |
Correct |
2 ms |
252 KB |
Output is correct |
| 29 |
Correct |
2 ms |
256 KB |
Output is correct |
| 30 |
Correct |
4 ms |
376 KB |
Output is correct |
| 31 |
Correct |
4 ms |
376 KB |
Output is correct |
| 32 |
Correct |
2 ms |
376 KB |
Output is correct |
| 33 |
Correct |
2 ms |
252 KB |
Output is correct |
| 34 |
Correct |
5 ms |
376 KB |
Output is correct |
| 35 |
Correct |
48 ms |
1712 KB |
Output is correct |
| 36 |
Correct |
120 ms |
4088 KB |
Output is correct |
| 37 |
Correct |
160 ms |
4472 KB |
Output is correct |
| 38 |
Correct |
193 ms |
7032 KB |
Output is correct |
| 39 |
Correct |
324 ms |
8628 KB |
Output is correct |
| 40 |
Correct |
7 ms |
504 KB |
Output is correct |
| 41 |
Correct |
13 ms |
760 KB |
Output is correct |
| 42 |
Correct |
18 ms |
888 KB |
Output is correct |
| 43 |
Correct |
124 ms |
4108 KB |
Output is correct |
| 44 |
Correct |
316 ms |
8588 KB |
Output is correct |
| 45 |
Correct |
60 ms |
2168 KB |
Output is correct |
| 46 |
Correct |
186 ms |
6904 KB |
Output is correct |
| 47 |
Correct |
314 ms |
8568 KB |
Output is correct |
| 48 |
Correct |
315 ms |
8952 KB |
Output is correct |
| 49 |
Correct |
304 ms |
7932 KB |
Output is correct |
| 50 |
Correct |
304 ms |
8092 KB |
Output is correct |
