#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 5e5 + 55;
ll a[N], p[N];
ll sum(int l, int r) {
return p[r] - p[l - 1];
}
using pll = pair<ll,ll>;
set<pair<ll,pll>> s;
vector<set<pair<ll,pll>>::iterator> del;
void upd(ll pos, pll val) {
//cout << pos << " " << val.first << " " << val.second << " mk" << endl;;
del.clear();
auto it = s.upper_bound({pos, {-1, -1}});
if (s.size() && it != s.begin() && prev(it)->second >= val) return;
//cout << "actually added" << endl;
while (it != s.end() && it->second <= val) {
del.push_back(it);
it++;
}
for (auto it : del) {
s.erase(it);
}
s.insert({pos, val});
}
pll get(ll pos) {
//cout << pos << " sr" << endl;
auto it = s.upper_bound({pos + 1, {-1, -1}});
if (s.empty() || it == s.begin()) return {-1, -1};
//cout << prev(it)->second.first << " " << prev(it)->second.second << " fou" << endl;
return prev(it)->second;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0), cout.tie(0);
int n;
cin >> n;
for (int i = 1 ; i <= n ; ++ i) {
cin >> a[i];
p[i] = a[i] + p[i - 1];
}
ll mx = 1;
upd(-sum(1, n), {0, 0});
for (int i = 1 ; i <= n ; ++ i) {
auto [s, j] = get(-sum(i + 1, n));
j++;
mx = max(mx, s + 1);
upd(sum(j, i) - sum(i + 1, n), {s + 1, i});
//cout << i << " " << s << " " << j << endl;
}
cout << mx;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
396 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
2 ms |
620 KB |
Output is correct |
| 32 |
Correct |
2 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
364 KB |
Output is correct |
| 34 |
Correct |
2 ms |
620 KB |
Output is correct |
| 35 |
Correct |
2 ms |
620 KB |
Output is correct |
| 36 |
Correct |
2 ms |
492 KB |
Output is correct |
| 37 |
Correct |
2 ms |
492 KB |
Output is correct |
| 38 |
Correct |
1 ms |
492 KB |
Output is correct |
| 39 |
Correct |
2 ms |
492 KB |
Output is correct |
| 40 |
Correct |
2 ms |
620 KB |
Output is correct |
| 41 |
Correct |
2 ms |
620 KB |
Output is correct |
| 42 |
Correct |
2 ms |
620 KB |
Output is correct |
| 43 |
Correct |
2 ms |
492 KB |
Output is correct |
| 44 |
Correct |
2 ms |
620 KB |
Output is correct |
| 45 |
Correct |
2 ms |
620 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
2 ms |
620 KB |
Output is correct |
| 32 |
Correct |
2 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
364 KB |
Output is correct |
| 34 |
Correct |
2 ms |
620 KB |
Output is correct |
| 35 |
Correct |
2 ms |
620 KB |
Output is correct |
| 36 |
Correct |
2 ms |
492 KB |
Output is correct |
| 37 |
Correct |
2 ms |
492 KB |
Output is correct |
| 38 |
Correct |
1 ms |
492 KB |
Output is correct |
| 39 |
Correct |
2 ms |
492 KB |
Output is correct |
| 40 |
Correct |
2 ms |
620 KB |
Output is correct |
| 41 |
Correct |
2 ms |
620 KB |
Output is correct |
| 42 |
Correct |
2 ms |
620 KB |
Output is correct |
| 43 |
Correct |
2 ms |
492 KB |
Output is correct |
| 44 |
Correct |
2 ms |
620 KB |
Output is correct |
| 45 |
Correct |
2 ms |
620 KB |
Output is correct |
| 46 |
Correct |
58 ms |
8192 KB |
Output is correct |
| 47 |
Correct |
51 ms |
6252 KB |
Output is correct |
| 48 |
Correct |
46 ms |
2412 KB |
Output is correct |
| 49 |
Correct |
64 ms |
5612 KB |
Output is correct |
| 50 |
Correct |
65 ms |
8232 KB |
Output is correct |
| 51 |
Correct |
64 ms |
6892 KB |
Output is correct |
| 52 |
Correct |
31 ms |
3820 KB |
Output is correct |
| 53 |
Correct |
18 ms |
2284 KB |
Output is correct |
| 54 |
Correct |
57 ms |
6508 KB |
Output is correct |
| 55 |
Correct |
66 ms |
7660 KB |
Output is correct |
| 56 |
Correct |
62 ms |
8172 KB |
Output is correct |
| 57 |
Correct |
61 ms |
8044 KB |
Output is correct |
| 58 |
Correct |
59 ms |
7660 KB |
Output is correct |
| 59 |
Correct |
69 ms |
8300 KB |
Output is correct |
| 60 |
Correct |
64 ms |
8172 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
2 ms |
620 KB |
Output is correct |
| 32 |
Correct |
2 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
364 KB |
Output is correct |
| 34 |
Correct |
2 ms |
620 KB |
Output is correct |
| 35 |
Correct |
2 ms |
620 KB |
Output is correct |
| 36 |
Correct |
2 ms |
492 KB |
Output is correct |
| 37 |
Correct |
2 ms |
492 KB |
Output is correct |
| 38 |
Correct |
1 ms |
492 KB |
Output is correct |
| 39 |
Correct |
2 ms |
492 KB |
Output is correct |
| 40 |
Correct |
2 ms |
620 KB |
Output is correct |
| 41 |
Correct |
2 ms |
620 KB |
Output is correct |
| 42 |
Correct |
2 ms |
620 KB |
Output is correct |
| 43 |
Correct |
2 ms |
492 KB |
Output is correct |
| 44 |
Correct |
2 ms |
620 KB |
Output is correct |
| 45 |
Correct |
2 ms |
620 KB |
Output is correct |
| 46 |
Correct |
58 ms |
8192 KB |
Output is correct |
| 47 |
Correct |
51 ms |
6252 KB |
Output is correct |
| 48 |
Correct |
46 ms |
2412 KB |
Output is correct |
| 49 |
Correct |
64 ms |
5612 KB |
Output is correct |
| 50 |
Correct |
65 ms |
8232 KB |
Output is correct |
| 51 |
Correct |
64 ms |
6892 KB |
Output is correct |
| 52 |
Correct |
31 ms |
3820 KB |
Output is correct |
| 53 |
Correct |
18 ms |
2284 KB |
Output is correct |
| 54 |
Correct |
57 ms |
6508 KB |
Output is correct |
| 55 |
Correct |
66 ms |
7660 KB |
Output is correct |
| 56 |
Correct |
62 ms |
8172 KB |
Output is correct |
| 57 |
Correct |
61 ms |
8044 KB |
Output is correct |
| 58 |
Correct |
59 ms |
7660 KB |
Output is correct |
| 59 |
Correct |
69 ms |
8300 KB |
Output is correct |
| 60 |
Correct |
64 ms |
8172 KB |
Output is correct |
| 61 |
Correct |
305 ms |
39572 KB |
Output is correct |
| 62 |
Correct |
324 ms |
39560 KB |
Output is correct |
| 63 |
Correct |
290 ms |
31064 KB |
Output is correct |
| 64 |
Correct |
333 ms |
14444 KB |
Output is correct |
| 65 |
Correct |
369 ms |
39532 KB |
Output is correct |
| 66 |
Correct |
360 ms |
33036 KB |
Output is correct |
| 67 |
Correct |
288 ms |
26476 KB |
Output is correct |
| 68 |
Correct |
135 ms |
13420 KB |
Output is correct |
| 69 |
Correct |
327 ms |
31212 KB |
Output is correct |
| 70 |
Correct |
373 ms |
37100 KB |
Output is correct |
| 71 |
Correct |
362 ms |
39520 KB |
Output is correct |
| 72 |
Correct |
336 ms |
34404 KB |
Output is correct |
| 73 |
Correct |
343 ms |
35424 KB |
Output is correct |
| 74 |
Correct |
360 ms |
39532 KB |
Output is correct |
| 75 |
Correct |
356 ms |
39532 KB |
Output is correct |
