#include <bits/stdc++.h>
using namespace std;
const int MXN = 1e5+5;
#define ll long long
ll A[MXN], P[MXN], n, all;
vector<ll> sa, sb;
ll cut(ll x,int i){
return all-
*lower_bound(sa.begin(),sa.end(),x+P[i])-
*lower_bound(sb.begin(),sb.end(),x-P[i]);
}
int f(ll x){ // 답이 x 이상인가?
for(int i = 0;i<n;i++) // i에서 cut
if(cut(x,i)>=x) return 1;
return 0;
}
ll sum(int i,int j){return (i<=j?P[j]-P[i-1]:0);}
int main() {
cin.tie(0)->sync_with_stdio(0);
cin >> n;
for(int i = 1;i<=n;i++){
cin >> A[i]; P[i] = P[i-1]+A[i];
}
all = P[n];
ll suma = 0, sumb = 0;
sa.push_back(0);
for(int t = 0;t<2;t++)
for(int i = 1;i<=n;i++){
suma += A[i]; sa.push_back(suma);
}
for(int i = n;i>0;i--){
sumb += A[i]; sb.push_back(sumb);
}
for(int i = 0;i<=n;i++) sb.push_back(-P[i]);
sort(sb.begin(),sb.end());
ll l = 0, r = all;
for(;l+1<r;){
ll mid = l+r>>1;
if(f(mid)) l = mid;
else r = mid;
}
cout << l;
}
Compilation message
2014_ho_t3.cpp: In function 'int main()':
2014_ho_t3.cpp:38:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
38 | ll mid = l+r>>1;
| ~^~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
13 ms |
852 KB |
Output is correct |
| 22 |
Correct |
11 ms |
852 KB |
Output is correct |
| 23 |
Correct |
11 ms |
852 KB |
Output is correct |
| 24 |
Correct |
11 ms |
852 KB |
Output is correct |
| 25 |
Correct |
11 ms |
852 KB |
Output is correct |
| 26 |
Correct |
15 ms |
852 KB |
Output is correct |
| 27 |
Correct |
18 ms |
856 KB |
Output is correct |
| 28 |
Correct |
16 ms |
852 KB |
Output is correct |
| 29 |
Correct |
17 ms |
852 KB |
Output is correct |
| 30 |
Correct |
18 ms |
852 KB |
Output is correct |
| 31 |
Correct |
7 ms |
852 KB |
Output is correct |
| 32 |
Correct |
8 ms |
852 KB |
Output is correct |
| 33 |
Correct |
8 ms |
852 KB |
Output is correct |
| 34 |
Correct |
7 ms |
852 KB |
Output is correct |
| 35 |
Correct |
7 ms |
852 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
13 ms |
852 KB |
Output is correct |
| 22 |
Correct |
11 ms |
852 KB |
Output is correct |
| 23 |
Correct |
11 ms |
852 KB |
Output is correct |
| 24 |
Correct |
11 ms |
852 KB |
Output is correct |
| 25 |
Correct |
11 ms |
852 KB |
Output is correct |
| 26 |
Correct |
15 ms |
852 KB |
Output is correct |
| 27 |
Correct |
18 ms |
856 KB |
Output is correct |
| 28 |
Correct |
16 ms |
852 KB |
Output is correct |
| 29 |
Correct |
17 ms |
852 KB |
Output is correct |
| 30 |
Correct |
18 ms |
852 KB |
Output is correct |
| 31 |
Correct |
7 ms |
852 KB |
Output is correct |
| 32 |
Correct |
8 ms |
852 KB |
Output is correct |
| 33 |
Correct |
8 ms |
852 KB |
Output is correct |
| 34 |
Correct |
7 ms |
852 KB |
Output is correct |
| 35 |
Correct |
7 ms |
852 KB |
Output is correct |
| 36 |
Correct |
216 ms |
7456 KB |
Output is correct |
| 37 |
Correct |
244 ms |
7508 KB |
Output is correct |
| 38 |
Correct |
238 ms |
7380 KB |
Output is correct |
| 39 |
Correct |
246 ms |
7500 KB |
Output is correct |
| 40 |
Correct |
228 ms |
7500 KB |
Output is correct |
| 41 |
Correct |
247 ms |
7496 KB |
Output is correct |
| 42 |
Correct |
204 ms |
7492 KB |
Output is correct |
| 43 |
Correct |
237 ms |
7504 KB |
Output is correct |
| 44 |
Correct |
192 ms |
7436 KB |
Output is correct |
| 45 |
Correct |
243 ms |
7500 KB |
Output is correct |
| 46 |
Correct |
102 ms |
6732 KB |
Output is correct |
| 47 |
Correct |
98 ms |
6732 KB |
Output is correct |
| 48 |
Correct |
106 ms |
6628 KB |
Output is correct |
