#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define sz(v) (int)(v).size()
#define all(v) (v).begin(), (v).end()
#define ff first
#define ss second
#define pii pair<int, int>
#define all(v) (v).begin(), (v).end()
int main() {
ios::sync_with_stdio(false); cin.tie(nullptr);
int n;
cin >> n;
vector<int> a(n);
for (auto &i : a)
cin >> i;
vector<ll> p(n);
for (int i = 0; i < n; i++)
p[i] = (i ? p[i - 1] : 0) + a[i];
vector<ll> dp = p;
for (int i = 1; i < n; i++) {
vector<ll> u(sz(dp));
for (int j = sz(dp) - 1; j >= 0; j--)
u[j] = min((j + 1 == sz(dp) ? LLONG_MAX : u[j + 1]), dp[j] + p[j]);
for (int j = sz(dp) - 1; j >= 0; j--) {
dp[j] = (ll)1e18;
if (p[j] < u[0]) continue;
int t = upper_bound(u.begin(), u.begin() + j, p[j]) - u.begin() - 1;
dp[j] = p[j] - p[t];
// cout << "\nj " << j << ' ' << t << ' ' << p[t] << ' ' << p[j] << ' ' << p[j] - p[t] << endl;
// for (int k = j; k > 0; k--) {
// if (dp[k - 1] <= p[j] - p[k - 1]) {
// // cout << "k " << k << ' ' << sm << endl;
// dp[j] = p[j] - p[k - 1]; break;
// }
// }
}
while (!dp.empty() && dp[0] == (ll)1e18) {
dp.erase(dp.begin());
p.erase(p.begin());
}
if (dp.empty() || dp.back() == (ll)1e18) return cout << i, 0;
}
cout << n;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
504 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
504 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
2 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
508 KB |
Output is correct |
19 |
Correct |
2 ms |
336 KB |
Output is correct |
20 |
Correct |
2 ms |
336 KB |
Output is correct |
21 |
Correct |
1 ms |
336 KB |
Output is correct |
22 |
Correct |
2 ms |
504 KB |
Output is correct |
23 |
Correct |
1 ms |
336 KB |
Output is correct |
24 |
Correct |
2 ms |
336 KB |
Output is correct |
25 |
Correct |
1 ms |
336 KB |
Output is correct |
26 |
Correct |
2 ms |
336 KB |
Output is correct |
27 |
Correct |
1 ms |
336 KB |
Output is correct |
28 |
Correct |
1 ms |
336 KB |
Output is correct |
29 |
Correct |
2 ms |
336 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
504 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
2 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
508 KB |
Output is correct |
19 |
Correct |
2 ms |
336 KB |
Output is correct |
20 |
Correct |
2 ms |
336 KB |
Output is correct |
21 |
Correct |
1 ms |
336 KB |
Output is correct |
22 |
Correct |
2 ms |
504 KB |
Output is correct |
23 |
Correct |
1 ms |
336 KB |
Output is correct |
24 |
Correct |
2 ms |
336 KB |
Output is correct |
25 |
Correct |
1 ms |
336 KB |
Output is correct |
26 |
Correct |
2 ms |
336 KB |
Output is correct |
27 |
Correct |
1 ms |
336 KB |
Output is correct |
28 |
Correct |
1 ms |
336 KB |
Output is correct |
29 |
Correct |
2 ms |
336 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
336 KB |
Output is correct |
32 |
Correct |
3 ms |
504 KB |
Output is correct |
33 |
Correct |
6 ms |
336 KB |
Output is correct |
34 |
Correct |
40 ms |
336 KB |
Output is correct |
35 |
Correct |
40 ms |
336 KB |
Output is correct |
36 |
Correct |
6 ms |
336 KB |
Output is correct |
37 |
Correct |
6 ms |
336 KB |
Output is correct |
38 |
Correct |
3 ms |
512 KB |
Output is correct |
39 |
Correct |
6 ms |
336 KB |
Output is correct |
40 |
Correct |
5 ms |
336 KB |
Output is correct |
41 |
Correct |
40 ms |
536 KB |
Output is correct |
42 |
Correct |
40 ms |
532 KB |
Output is correct |
43 |
Correct |
13 ms |
336 KB |
Output is correct |
44 |
Correct |
39 ms |
336 KB |
Output is correct |
45 |
Correct |
42 ms |
336 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
504 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
2 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
508 KB |
Output is correct |
19 |
Correct |
2 ms |
336 KB |
Output is correct |
20 |
Correct |
2 ms |
336 KB |
Output is correct |
21 |
Correct |
1 ms |
336 KB |
Output is correct |
22 |
Correct |
2 ms |
504 KB |
Output is correct |
23 |
Correct |
1 ms |
336 KB |
Output is correct |
24 |
Correct |
2 ms |
336 KB |
Output is correct |
25 |
Correct |
1 ms |
336 KB |
Output is correct |
26 |
Correct |
2 ms |
336 KB |
Output is correct |
27 |
Correct |
1 ms |
336 KB |
Output is correct |
28 |
Correct |
1 ms |
336 KB |
Output is correct |
29 |
Correct |
2 ms |
336 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
336 KB |
Output is correct |
32 |
Correct |
3 ms |
504 KB |
Output is correct |
33 |
Correct |
6 ms |
336 KB |
Output is correct |
34 |
Correct |
40 ms |
336 KB |
Output is correct |
35 |
Correct |
40 ms |
336 KB |
Output is correct |
36 |
Correct |
6 ms |
336 KB |
Output is correct |
37 |
Correct |
6 ms |
336 KB |
Output is correct |
38 |
Correct |
3 ms |
512 KB |
Output is correct |
39 |
Correct |
6 ms |
336 KB |
Output is correct |
40 |
Correct |
5 ms |
336 KB |
Output is correct |
41 |
Correct |
40 ms |
536 KB |
Output is correct |
42 |
Correct |
40 ms |
532 KB |
Output is correct |
43 |
Correct |
13 ms |
336 KB |
Output is correct |
44 |
Correct |
39 ms |
336 KB |
Output is correct |
45 |
Correct |
42 ms |
336 KB |
Output is correct |
46 |
Execution timed out |
1546 ms |
3164 KB |
Time limit exceeded |
47 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
336 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
336 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
336 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
504 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
2 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
508 KB |
Output is correct |
19 |
Correct |
2 ms |
336 KB |
Output is correct |
20 |
Correct |
2 ms |
336 KB |
Output is correct |
21 |
Correct |
1 ms |
336 KB |
Output is correct |
22 |
Correct |
2 ms |
504 KB |
Output is correct |
23 |
Correct |
1 ms |
336 KB |
Output is correct |
24 |
Correct |
2 ms |
336 KB |
Output is correct |
25 |
Correct |
1 ms |
336 KB |
Output is correct |
26 |
Correct |
2 ms |
336 KB |
Output is correct |
27 |
Correct |
1 ms |
336 KB |
Output is correct |
28 |
Correct |
1 ms |
336 KB |
Output is correct |
29 |
Correct |
2 ms |
336 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
336 KB |
Output is correct |
32 |
Correct |
3 ms |
504 KB |
Output is correct |
33 |
Correct |
6 ms |
336 KB |
Output is correct |
34 |
Correct |
40 ms |
336 KB |
Output is correct |
35 |
Correct |
40 ms |
336 KB |
Output is correct |
36 |
Correct |
6 ms |
336 KB |
Output is correct |
37 |
Correct |
6 ms |
336 KB |
Output is correct |
38 |
Correct |
3 ms |
512 KB |
Output is correct |
39 |
Correct |
6 ms |
336 KB |
Output is correct |
40 |
Correct |
5 ms |
336 KB |
Output is correct |
41 |
Correct |
40 ms |
536 KB |
Output is correct |
42 |
Correct |
40 ms |
532 KB |
Output is correct |
43 |
Correct |
13 ms |
336 KB |
Output is correct |
44 |
Correct |
39 ms |
336 KB |
Output is correct |
45 |
Correct |
42 ms |
336 KB |
Output is correct |
46 |
Execution timed out |
1546 ms |
3164 KB |
Time limit exceeded |
47 |
Halted |
0 ms |
0 KB |
- |