#include <bits/stdc++.h>
#define F first
#define S second
using namespace std;
const int N = (int)5e5 + 5;
const long long M = (long long)6e14;
int n,timer = 1,a[N],L[N * 20],R[N * 20];
pair<int,int> t[N * 20];
long long pref[N];
pair<int,long long> dp[N];
pair<int,int> ZeroPair = {0,0};
void upd(int v,long long tl,long long tr,long long pos,pair<int,int> val){
if(tl == tr){
t[v] = val;
return;
}
long long tm = (tl + tr) >> 1;
if(pos <= tm){
if(!L[v]) L[v] = ++timer;
upd(L[v],tl,tm,pos,val);
}
else{
if(!R[v]) R[v] = ++timer;
upd(R[v],tm + 1,tr,pos,val);
}
t[v] = max(t[L[v]],t[R[v]]);
}
pair<int,int> get(int v,long long tl,long long tr,long long l,long long r){
if(l <= tl && tr <= r) return t[v];
if(tl > r || tr < l) return ZeroPair;
long long tm = (tl + tr) >> 1;
return max(get(L[v],tl,tm,l,r),get(R[v],tm + 1,tr,l,r));
}
int main(){
ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
cin >> n;
for(int i = 1; i <= n; i++){
cin >> a[i];
pref[i] = pref[i - 1] + a[i];
}
dp[1] = {1,a[1]};
upd(1,1,M,pref[1] + dp[1].S,make_pair(dp[1].F,1));
for(int i = 2; i <= n; i++){
dp[i] = {dp[i - 1].F,dp[i - 1].S + a[i]};
pair<int,int> cur = get(1,1,M,1,pref[i]);
if(cur.F > 0) dp[i] = {cur.F + 1,pref[i] - pref[cur.S]};
upd(1,1,M,pref[i] + dp[i].S,make_pair(dp[i].F,i));
}
cout << dp[n].F;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
4 ms |
380 KB |
Output is correct |
| 4 |
Correct |
5 ms |
376 KB |
Output is correct |
| 5 |
Correct |
5 ms |
376 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
376 KB |
Output is correct |
| 8 |
Correct |
5 ms |
376 KB |
Output is correct |
| 9 |
Correct |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
376 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
4 ms |
380 KB |
Output is correct |
| 4 |
Correct |
5 ms |
376 KB |
Output is correct |
| 5 |
Correct |
5 ms |
376 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
376 KB |
Output is correct |
| 8 |
Correct |
5 ms |
376 KB |
Output is correct |
| 9 |
Correct |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
376 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
504 KB |
Output is correct |
| 17 |
Correct |
6 ms |
632 KB |
Output is correct |
| 18 |
Correct |
6 ms |
636 KB |
Output is correct |
| 19 |
Correct |
5 ms |
632 KB |
Output is correct |
| 20 |
Correct |
6 ms |
632 KB |
Output is correct |
| 21 |
Correct |
6 ms |
632 KB |
Output is correct |
| 22 |
Correct |
5 ms |
632 KB |
Output is correct |
| 23 |
Correct |
6 ms |
632 KB |
Output is correct |
| 24 |
Correct |
5 ms |
376 KB |
Output is correct |
| 25 |
Correct |
6 ms |
632 KB |
Output is correct |
| 26 |
Correct |
5 ms |
376 KB |
Output is correct |
| 27 |
Correct |
5 ms |
376 KB |
Output is correct |
| 28 |
Correct |
5 ms |
376 KB |
Output is correct |
| 29 |
Correct |
7 ms |
504 KB |
Output is correct |
| 30 |
Correct |
5 ms |
504 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
4 ms |
380 KB |
Output is correct |
| 4 |
Correct |
5 ms |
376 KB |
Output is correct |
| 5 |
Correct |
5 ms |
376 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
376 KB |
Output is correct |
| 8 |
Correct |
5 ms |
376 KB |
Output is correct |
| 9 |
Correct |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
376 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
504 KB |
Output is correct |
| 17 |
Correct |
6 ms |
632 KB |
Output is correct |
| 18 |
Correct |
6 ms |
636 KB |
Output is correct |
| 19 |
Correct |
5 ms |
632 KB |
Output is correct |
| 20 |
Correct |
6 ms |
632 KB |
Output is correct |
| 21 |
Correct |
6 ms |
632 KB |
Output is correct |
| 22 |
Correct |
5 ms |
632 KB |
Output is correct |
| 23 |
Correct |
6 ms |
632 KB |
Output is correct |
| 24 |
Correct |
5 ms |
376 KB |
Output is correct |
| 25 |
Correct |
6 ms |
632 KB |
Output is correct |
| 26 |
Correct |
5 ms |
376 KB |
Output is correct |
| 27 |
Correct |
5 ms |
376 KB |
Output is correct |
| 28 |
Correct |
5 ms |
376 KB |
Output is correct |
| 29 |
Correct |
7 ms |
504 KB |
Output is correct |
| 30 |
Correct |
5 ms |
504 KB |
Output is correct |
| 31 |
Correct |
9 ms |
1272 KB |
Output is correct |
| 32 |
Correct |
10 ms |
1400 KB |
Output is correct |
| 33 |
Correct |
10 ms |
1656 KB |
Output is correct |
| 34 |
Correct |
10 ms |
1528 KB |
Output is correct |
| 35 |
Correct |
10 ms |
1912 KB |
Output is correct |
| 36 |
Correct |
10 ms |
1912 KB |
Output is correct |
| 37 |
Correct |
9 ms |
1656 KB |
Output is correct |
| 38 |
Correct |
8 ms |
1400 KB |
Output is correct |
| 39 |
Correct |
8 ms |
632 KB |
Output is correct |
| 40 |
Correct |
10 ms |
1784 KB |
Output is correct |
| 41 |
Correct |
8 ms |
632 KB |
Output is correct |
| 42 |
Correct |
9 ms |
800 KB |
Output is correct |
| 43 |
Correct |
10 ms |
632 KB |
Output is correct |
| 44 |
Correct |
9 ms |
1020 KB |
Output is correct |
| 45 |
Correct |
8 ms |
1016 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
4 ms |
380 KB |
Output is correct |
| 4 |
Correct |
5 ms |
376 KB |
Output is correct |
| 5 |
Correct |
5 ms |
376 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
376 KB |
Output is correct |
| 8 |
Correct |
5 ms |
376 KB |
Output is correct |
| 9 |
Correct |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
376 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
504 KB |
Output is correct |
| 17 |
Correct |
6 ms |
632 KB |
Output is correct |
| 18 |
Correct |
6 ms |
636 KB |
Output is correct |
| 19 |
Correct |
5 ms |
632 KB |
Output is correct |
| 20 |
Correct |
6 ms |
632 KB |
Output is correct |
| 21 |
Correct |
6 ms |
632 KB |
Output is correct |
| 22 |
Correct |
5 ms |
632 KB |
Output is correct |
| 23 |
Correct |
6 ms |
632 KB |
Output is correct |
| 24 |
Correct |
5 ms |
376 KB |
Output is correct |
| 25 |
Correct |
6 ms |
632 KB |
Output is correct |
| 26 |
Correct |
5 ms |
376 KB |
Output is correct |
| 27 |
Correct |
5 ms |
376 KB |
Output is correct |
| 28 |
Correct |
5 ms |
376 KB |
Output is correct |
| 29 |
Correct |
7 ms |
504 KB |
Output is correct |
| 30 |
Correct |
5 ms |
504 KB |
Output is correct |
| 31 |
Correct |
9 ms |
1272 KB |
Output is correct |
| 32 |
Correct |
10 ms |
1400 KB |
Output is correct |
| 33 |
Correct |
10 ms |
1656 KB |
Output is correct |
| 34 |
Correct |
10 ms |
1528 KB |
Output is correct |
| 35 |
Correct |
10 ms |
1912 KB |
Output is correct |
| 36 |
Correct |
10 ms |
1912 KB |
Output is correct |
| 37 |
Correct |
9 ms |
1656 KB |
Output is correct |
| 38 |
Correct |
8 ms |
1400 KB |
Output is correct |
| 39 |
Correct |
8 ms |
632 KB |
Output is correct |
| 40 |
Correct |
10 ms |
1784 KB |
Output is correct |
| 41 |
Correct |
8 ms |
632 KB |
Output is correct |
| 42 |
Correct |
9 ms |
800 KB |
Output is correct |
| 43 |
Correct |
10 ms |
632 KB |
Output is correct |
| 44 |
Correct |
9 ms |
1020 KB |
Output is correct |
| 45 |
Correct |
8 ms |
1016 KB |
Output is correct |
| 46 |
Correct |
157 ms |
20220 KB |
Output is correct |
| 47 |
Correct |
151 ms |
22760 KB |
Output is correct |
| 48 |
Correct |
187 ms |
43384 KB |
Output is correct |
| 49 |
Correct |
181 ms |
47352 KB |
Output is correct |
| 50 |
Correct |
177 ms |
52168 KB |
Output is correct |
| 51 |
Correct |
197 ms |
51268 KB |
Output is correct |
| 52 |
Correct |
94 ms |
25824 KB |
Output is correct |
| 53 |
Correct |
57 ms |
15736 KB |
Output is correct |
| 54 |
Correct |
117 ms |
9184 KB |
Output is correct |
| 55 |
Correct |
188 ms |
49760 KB |
Output is correct |
| 56 |
Correct |
146 ms |
24184 KB |
Output is correct |
| 57 |
Correct |
138 ms |
20404 KB |
Output is correct |
| 58 |
Correct |
146 ms |
22188 KB |
Output is correct |
| 59 |
Correct |
145 ms |
30584 KB |
Output is correct |
| 60 |
Correct |
154 ms |
30328 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
4 ms |
380 KB |
Output is correct |
| 4 |
Correct |
5 ms |
376 KB |
Output is correct |
| 5 |
Correct |
5 ms |
376 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
376 KB |
Output is correct |
| 8 |
Correct |
5 ms |
376 KB |
Output is correct |
| 9 |
Correct |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
376 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
504 KB |
Output is correct |
| 17 |
Correct |
6 ms |
632 KB |
Output is correct |
| 18 |
Correct |
6 ms |
636 KB |
Output is correct |
| 19 |
Correct |
5 ms |
632 KB |
Output is correct |
| 20 |
Correct |
6 ms |
632 KB |
Output is correct |
| 21 |
Correct |
6 ms |
632 KB |
Output is correct |
| 22 |
Correct |
5 ms |
632 KB |
Output is correct |
| 23 |
Correct |
6 ms |
632 KB |
Output is correct |
| 24 |
Correct |
5 ms |
376 KB |
Output is correct |
| 25 |
Correct |
6 ms |
632 KB |
Output is correct |
| 26 |
Correct |
5 ms |
376 KB |
Output is correct |
| 27 |
Correct |
5 ms |
376 KB |
Output is correct |
| 28 |
Correct |
5 ms |
376 KB |
Output is correct |
| 29 |
Correct |
7 ms |
504 KB |
Output is correct |
| 30 |
Correct |
5 ms |
504 KB |
Output is correct |
| 31 |
Correct |
9 ms |
1272 KB |
Output is correct |
| 32 |
Correct |
10 ms |
1400 KB |
Output is correct |
| 33 |
Correct |
10 ms |
1656 KB |
Output is correct |
| 34 |
Correct |
10 ms |
1528 KB |
Output is correct |
| 35 |
Correct |
10 ms |
1912 KB |
Output is correct |
| 36 |
Correct |
10 ms |
1912 KB |
Output is correct |
| 37 |
Correct |
9 ms |
1656 KB |
Output is correct |
| 38 |
Correct |
8 ms |
1400 KB |
Output is correct |
| 39 |
Correct |
8 ms |
632 KB |
Output is correct |
| 40 |
Correct |
10 ms |
1784 KB |
Output is correct |
| 41 |
Correct |
8 ms |
632 KB |
Output is correct |
| 42 |
Correct |
9 ms |
800 KB |
Output is correct |
| 43 |
Correct |
10 ms |
632 KB |
Output is correct |
| 44 |
Correct |
9 ms |
1020 KB |
Output is correct |
| 45 |
Correct |
8 ms |
1016 KB |
Output is correct |
| 46 |
Correct |
157 ms |
20220 KB |
Output is correct |
| 47 |
Correct |
151 ms |
22760 KB |
Output is correct |
| 48 |
Correct |
187 ms |
43384 KB |
Output is correct |
| 49 |
Correct |
181 ms |
47352 KB |
Output is correct |
| 50 |
Correct |
177 ms |
52168 KB |
Output is correct |
| 51 |
Correct |
197 ms |
51268 KB |
Output is correct |
| 52 |
Correct |
94 ms |
25824 KB |
Output is correct |
| 53 |
Correct |
57 ms |
15736 KB |
Output is correct |
| 54 |
Correct |
117 ms |
9184 KB |
Output is correct |
| 55 |
Correct |
188 ms |
49760 KB |
Output is correct |
| 56 |
Correct |
146 ms |
24184 KB |
Output is correct |
| 57 |
Correct |
138 ms |
20404 KB |
Output is correct |
| 58 |
Correct |
146 ms |
22188 KB |
Output is correct |
| 59 |
Correct |
145 ms |
30584 KB |
Output is correct |
| 60 |
Correct |
154 ms |
30328 KB |
Output is correct |
| 61 |
Correct |
644 ms |
95780 KB |
Output is correct |
| 62 |
Correct |
649 ms |
92320 KB |
Output is correct |
| 63 |
Correct |
689 ms |
114456 KB |
Output is correct |
| 64 |
Runtime error |
909 ms |
262144 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 65 |
Halted |
0 ms |
0 KB |
- |
