#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define F first
#define S second
typedef pair<ll,ll> pa;
ll n,a,qs[500005],dp[500005],l,r,p,v;
set<pa> s;
set<pa> :: iterator it;
ll rang(int l,int r){
return qs[r] - qs[l-1];
}
int main(){
scanf("%lld",&n);
for(int i=1;i<=n;i++){
scanf("%lld",&a);
qs[i] = qs[i-1]+a;
}
s.insert({0,0});
for(int i=1;i<=n;i++){
it = s.upper_bound({qs[i],1e18});
--it;
v = (*it).F, p = (*it).S;
dp[i] = dp[p] + 1;
it = s.lower_bound({qs[i] + rang(p+1,i),-1e18});
s.erase(it,s.end());
s.insert({qs[i] + rang(p+1,i),i});
}
printf("%lld",dp[n]);
}
Compilation message
segments.cpp: In function 'int main()':
segments.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
14 | scanf("%lld",&n);
| ~~~~~^~~~~~~~~~~
segments.cpp:16:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
16 | scanf("%lld",&a);
| ~~~~~^~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
308 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
308 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
304 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
308 KB |
Output is correct |
| 13 |
Correct |
1 ms |
312 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
308 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
308 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
304 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
308 KB |
Output is correct |
| 13 |
Correct |
1 ms |
312 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
304 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
308 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 |
340 KB |
Output is correct |
| 24 |
Correct |
1 ms |
308 KB |
Output is correct |
| 25 |
Correct |
1 ms |
320 KB |
Output is correct |
| 26 |
Correct |
1 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
308 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
308 KB |
Output is correct |
| 30 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
308 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
308 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
304 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
308 KB |
Output is correct |
| 13 |
Correct |
1 ms |
312 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
304 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
308 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 |
340 KB |
Output is correct |
| 24 |
Correct |
1 ms |
308 KB |
Output is correct |
| 25 |
Correct |
1 ms |
320 KB |
Output is correct |
| 26 |
Correct |
1 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
308 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
308 KB |
Output is correct |
| 30 |
Correct |
1 ms |
340 KB |
Output is correct |
| 31 |
Correct |
1 ms |
448 KB |
Output is correct |
| 32 |
Correct |
1 ms |
468 KB |
Output is correct |
| 33 |
Correct |
1 ms |
340 KB |
Output is correct |
| 34 |
Correct |
2 ms |
468 KB |
Output is correct |
| 35 |
Correct |
2 ms |
468 KB |
Output is correct |
| 36 |
Correct |
2 ms |
468 KB |
Output is correct |
| 37 |
Correct |
1 ms |
480 KB |
Output is correct |
| 38 |
Correct |
1 ms |
468 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 |
2 ms |
468 KB |
Output is correct |
| 45 |
Correct |
1 ms |
468 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
308 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
308 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
304 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
308 KB |
Output is correct |
| 13 |
Correct |
1 ms |
312 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
304 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
308 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 |
340 KB |
Output is correct |
| 24 |
Correct |
1 ms |
308 KB |
Output is correct |
| 25 |
Correct |
1 ms |
320 KB |
Output is correct |
| 26 |
Correct |
1 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
308 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
308 KB |
Output is correct |
| 30 |
Correct |
1 ms |
340 KB |
Output is correct |
| 31 |
Correct |
1 ms |
448 KB |
Output is correct |
| 32 |
Correct |
1 ms |
468 KB |
Output is correct |
| 33 |
Correct |
1 ms |
340 KB |
Output is correct |
| 34 |
Correct |
2 ms |
468 KB |
Output is correct |
| 35 |
Correct |
2 ms |
468 KB |
Output is correct |
| 36 |
Correct |
2 ms |
468 KB |
Output is correct |
| 37 |
Correct |
1 ms |
480 KB |
Output is correct |
| 38 |
Correct |
1 ms |
468 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 |
2 ms |
468 KB |
Output is correct |
| 45 |
Correct |
1 ms |
468 KB |
Output is correct |
| 46 |
Correct |
42 ms |
8412 KB |
Output is correct |
| 47 |
Correct |
38 ms |
6508 KB |
Output is correct |
| 48 |
Correct |
34 ms |
3120 KB |
Output is correct |
| 49 |
Correct |
55 ms |
6196 KB |
Output is correct |
| 50 |
Correct |
53 ms |
9008 KB |
Output is correct |
| 51 |
Correct |
54 ms |
7812 KB |
Output is correct |
| 52 |
Correct |
22 ms |
4068 KB |
Output is correct |
| 53 |
Correct |
13 ms |
2636 KB |
Output is correct |
| 54 |
Correct |
41 ms |
6604 KB |
Output is correct |
| 55 |
Correct |
51 ms |
8444 KB |
Output is correct |
| 56 |
Correct |
53 ms |
8648 KB |
Output is correct |
| 57 |
Correct |
48 ms |
8016 KB |
Output is correct |
| 58 |
Correct |
55 ms |
7884 KB |
Output is correct |
| 59 |
Correct |
57 ms |
8768 KB |
Output is correct |
| 60 |
Correct |
49 ms |
8652 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
308 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
308 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
304 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
308 KB |
Output is correct |
| 13 |
Correct |
1 ms |
312 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
304 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
308 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 |
340 KB |
Output is correct |
| 24 |
Correct |
1 ms |
308 KB |
Output is correct |
| 25 |
Correct |
1 ms |
320 KB |
Output is correct |
| 26 |
Correct |
1 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
308 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
308 KB |
Output is correct |
| 30 |
Correct |
1 ms |
340 KB |
Output is correct |
| 31 |
Correct |
1 ms |
448 KB |
Output is correct |
| 32 |
Correct |
1 ms |
468 KB |
Output is correct |
| 33 |
Correct |
1 ms |
340 KB |
Output is correct |
| 34 |
Correct |
2 ms |
468 KB |
Output is correct |
| 35 |
Correct |
2 ms |
468 KB |
Output is correct |
| 36 |
Correct |
2 ms |
468 KB |
Output is correct |
| 37 |
Correct |
1 ms |
480 KB |
Output is correct |
| 38 |
Correct |
1 ms |
468 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 |
2 ms |
468 KB |
Output is correct |
| 45 |
Correct |
1 ms |
468 KB |
Output is correct |
| 46 |
Correct |
42 ms |
8412 KB |
Output is correct |
| 47 |
Correct |
38 ms |
6508 KB |
Output is correct |
| 48 |
Correct |
34 ms |
3120 KB |
Output is correct |
| 49 |
Correct |
55 ms |
6196 KB |
Output is correct |
| 50 |
Correct |
53 ms |
9008 KB |
Output is correct |
| 51 |
Correct |
54 ms |
7812 KB |
Output is correct |
| 52 |
Correct |
22 ms |
4068 KB |
Output is correct |
| 53 |
Correct |
13 ms |
2636 KB |
Output is correct |
| 54 |
Correct |
41 ms |
6604 KB |
Output is correct |
| 55 |
Correct |
51 ms |
8444 KB |
Output is correct |
| 56 |
Correct |
53 ms |
8648 KB |
Output is correct |
| 57 |
Correct |
48 ms |
8016 KB |
Output is correct |
| 58 |
Correct |
55 ms |
7884 KB |
Output is correct |
| 59 |
Correct |
57 ms |
8768 KB |
Output is correct |
| 60 |
Correct |
49 ms |
8652 KB |
Output is correct |
| 61 |
Correct |
271 ms |
41420 KB |
Output is correct |
| 62 |
Correct |
255 ms |
41372 KB |
Output is correct |
| 63 |
Correct |
240 ms |
33232 KB |
Output is correct |
| 64 |
Correct |
268 ms |
18852 KB |
Output is correct |
| 65 |
Correct |
316 ms |
44188 KB |
Output is correct |
| 66 |
Correct |
298 ms |
37824 KB |
Output is correct |
| 67 |
Correct |
212 ms |
30276 KB |
Output is correct |
| 68 |
Correct |
98 ms |
15316 KB |
Output is correct |
| 69 |
Correct |
266 ms |
31964 KB |
Output is correct |
| 70 |
Correct |
282 ms |
41720 KB |
Output is correct |
| 71 |
Correct |
318 ms |
41340 KB |
Output is correct |
| 72 |
Correct |
273 ms |
35444 KB |
Output is correct |
| 73 |
Correct |
306 ms |
37672 KB |
Output is correct |
| 74 |
Correct |
289 ms |
42628 KB |
Output is correct |
| 75 |
Correct |
366 ms |
42664 KB |
Output is correct |
