#include <bits/stdc++.h>
using namespace std;
int32_t main(){
ios::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
long long arr[n],pref[n+1];
for(int i=0; i<n; i++) cin >> arr[i];
pref[0]=0;
for(int i=0; i<n; i++){
pref[i+1]=pref[i]+arr[i];
}
pair<int,long long> dp[n+1];
dp[0]={0,0};
vector<pair<int,long long> > mono;
mono.push_back({0,0});
for(int i=1; i<=n; i++){
int lo=0,hi=mono.size()-1,mid;
while(lo<hi){
mid=(lo+hi+1LL)/2;
if(mono[mid].second<=pref[i]) lo=mid;
else hi=mid-1;
}
assert(mono[lo].second<=pref[i]);
dp[i]={dp[mono[lo].first].first+1LL,pref[i]-pref[mono[lo].first]};
while(!mono.empty()&&mono.back().second>=dp[i].second+pref[i]){
mono.pop_back();
}
mono.push_back({i,dp[i].second+pref[i]});
}
cout << dp[n].first;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
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 |
224 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
320 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
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 |
224 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
320 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
0 ms |
324 KB |
Output is correct |
| 19 |
Correct |
1 ms |
328 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
352 KB |
Output is correct |
| 26 |
Correct |
0 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
340 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
340 KB |
Output is correct |
| 30 |
Correct |
0 ms |
320 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
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 |
224 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
320 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
0 ms |
324 KB |
Output is correct |
| 19 |
Correct |
1 ms |
328 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
352 KB |
Output is correct |
| 26 |
Correct |
0 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
340 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
340 KB |
Output is correct |
| 30 |
Correct |
0 ms |
320 KB |
Output is correct |
| 31 |
Correct |
1 ms |
468 KB |
Output is correct |
| 32 |
Correct |
1 ms |
384 KB |
Output is correct |
| 33 |
Correct |
1 ms |
332 KB |
Output is correct |
| 34 |
Correct |
1 ms |
596 KB |
Output is correct |
| 35 |
Correct |
2 ms |
468 KB |
Output is correct |
| 36 |
Correct |
1 ms |
460 KB |
Output is correct |
| 37 |
Correct |
1 ms |
460 KB |
Output is correct |
| 38 |
Correct |
1 ms |
340 KB |
Output is correct |
| 39 |
Correct |
1 ms |
468 KB |
Output is correct |
| 40 |
Correct |
1 ms |
468 KB |
Output is correct |
| 41 |
Correct |
1 ms |
468 KB |
Output is correct |
| 42 |
Correct |
1 ms |
468 KB |
Output is correct |
| 43 |
Correct |
1 ms |
468 KB |
Output is correct |
| 44 |
Correct |
1 ms |
468 KB |
Output is correct |
| 45 |
Correct |
1 ms |
468 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
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 |
224 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
320 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
0 ms |
324 KB |
Output is correct |
| 19 |
Correct |
1 ms |
328 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
352 KB |
Output is correct |
| 26 |
Correct |
0 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
340 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
340 KB |
Output is correct |
| 30 |
Correct |
0 ms |
320 KB |
Output is correct |
| 31 |
Correct |
1 ms |
468 KB |
Output is correct |
| 32 |
Correct |
1 ms |
384 KB |
Output is correct |
| 33 |
Correct |
1 ms |
332 KB |
Output is correct |
| 34 |
Correct |
1 ms |
596 KB |
Output is correct |
| 35 |
Correct |
2 ms |
468 KB |
Output is correct |
| 36 |
Correct |
1 ms |
460 KB |
Output is correct |
| 37 |
Correct |
1 ms |
460 KB |
Output is correct |
| 38 |
Correct |
1 ms |
340 KB |
Output is correct |
| 39 |
Correct |
1 ms |
468 KB |
Output is correct |
| 40 |
Correct |
1 ms |
468 KB |
Output is correct |
| 41 |
Correct |
1 ms |
468 KB |
Output is correct |
| 42 |
Correct |
1 ms |
468 KB |
Output is correct |
| 43 |
Correct |
1 ms |
468 KB |
Output is correct |
| 44 |
Correct |
1 ms |
468 KB |
Output is correct |
| 45 |
Correct |
1 ms |
468 KB |
Output is correct |
| 46 |
Correct |
12 ms |
5968 KB |
Output is correct |
| 47 |
Correct |
14 ms |
6060 KB |
Output is correct |
| 48 |
Correct |
13 ms |
4428 KB |
Output is correct |
| 49 |
Correct |
15 ms |
5460 KB |
Output is correct |
| 50 |
Correct |
17 ms |
6580 KB |
Output is correct |
| 51 |
Correct |
18 ms |
6468 KB |
Output is correct |
| 52 |
Correct |
10 ms |
3516 KB |
Output is correct |
| 53 |
Correct |
5 ms |
2136 KB |
Output is correct |
| 54 |
Correct |
13 ms |
5828 KB |
Output is correct |
| 55 |
Correct |
16 ms |
6608 KB |
Output is correct |
| 56 |
Correct |
12 ms |
6064 KB |
Output is correct |
| 57 |
Correct |
13 ms |
5968 KB |
Output is correct |
| 58 |
Correct |
13 ms |
5956 KB |
Output is correct |
| 59 |
Correct |
13 ms |
6220 KB |
Output is correct |
| 60 |
Correct |
13 ms |
6164 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
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 |
224 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
320 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
0 ms |
324 KB |
Output is correct |
| 19 |
Correct |
1 ms |
328 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
1 ms |
340 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
352 KB |
Output is correct |
| 26 |
Correct |
0 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
340 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
340 KB |
Output is correct |
| 30 |
Correct |
0 ms |
320 KB |
Output is correct |
| 31 |
Correct |
1 ms |
468 KB |
Output is correct |
| 32 |
Correct |
1 ms |
384 KB |
Output is correct |
| 33 |
Correct |
1 ms |
332 KB |
Output is correct |
| 34 |
Correct |
1 ms |
596 KB |
Output is correct |
| 35 |
Correct |
2 ms |
468 KB |
Output is correct |
| 36 |
Correct |
1 ms |
460 KB |
Output is correct |
| 37 |
Correct |
1 ms |
460 KB |
Output is correct |
| 38 |
Correct |
1 ms |
340 KB |
Output is correct |
| 39 |
Correct |
1 ms |
468 KB |
Output is correct |
| 40 |
Correct |
1 ms |
468 KB |
Output is correct |
| 41 |
Correct |
1 ms |
468 KB |
Output is correct |
| 42 |
Correct |
1 ms |
468 KB |
Output is correct |
| 43 |
Correct |
1 ms |
468 KB |
Output is correct |
| 44 |
Correct |
1 ms |
468 KB |
Output is correct |
| 45 |
Correct |
1 ms |
468 KB |
Output is correct |
| 46 |
Correct |
12 ms |
5968 KB |
Output is correct |
| 47 |
Correct |
14 ms |
6060 KB |
Output is correct |
| 48 |
Correct |
13 ms |
4428 KB |
Output is correct |
| 49 |
Correct |
15 ms |
5460 KB |
Output is correct |
| 50 |
Correct |
17 ms |
6580 KB |
Output is correct |
| 51 |
Correct |
18 ms |
6468 KB |
Output is correct |
| 52 |
Correct |
10 ms |
3516 KB |
Output is correct |
| 53 |
Correct |
5 ms |
2136 KB |
Output is correct |
| 54 |
Correct |
13 ms |
5828 KB |
Output is correct |
| 55 |
Correct |
16 ms |
6608 KB |
Output is correct |
| 56 |
Correct |
12 ms |
6064 KB |
Output is correct |
| 57 |
Correct |
13 ms |
5968 KB |
Output is correct |
| 58 |
Correct |
13 ms |
5956 KB |
Output is correct |
| 59 |
Correct |
13 ms |
6220 KB |
Output is correct |
| 60 |
Correct |
13 ms |
6164 KB |
Output is correct |
| 61 |
Correct |
62 ms |
26164 KB |
Output is correct |
| 62 |
Correct |
65 ms |
26276 KB |
Output is correct |
| 63 |
Correct |
81 ms |
26668 KB |
Output is correct |
| 64 |
Correct |
74 ms |
22576 KB |
Output is correct |
| 65 |
Correct |
75 ms |
29120 KB |
Output is correct |
| 66 |
Correct |
80 ms |
29088 KB |
Output is correct |
| 67 |
Correct |
65 ms |
24964 KB |
Output is correct |
| 68 |
Correct |
36 ms |
12740 KB |
Output is correct |
| 69 |
Correct |
68 ms |
25280 KB |
Output is correct |
| 70 |
Correct |
103 ms |
29116 KB |
Output is correct |
| 71 |
Correct |
59 ms |
26156 KB |
Output is correct |
| 72 |
Correct |
64 ms |
26656 KB |
Output is correct |
| 73 |
Correct |
66 ms |
27168 KB |
Output is correct |
| 74 |
Correct |
67 ms |
27676 KB |
Output is correct |
| 75 |
Correct |
69 ms |
27552 KB |
Output is correct |
