#include <bits/stdc++.h>
#define x first
#define y second
#define pii pair<int,int>
using namespace std;
using ll=long long;
#define pll pair<ll,ll>
#define vi vector<int>
#define vl vector<ll>
#define pb push_back
#define eb emplace_back
#define all(a) begin(a),end(a)
const int N=500010,MOD=1e9+7,M=1<<19;
const char en='\n';
const ll LLINF=1ll<<60;
int t,n,h[N];
ll pr[N];
pll seg[M*2+10];
void upd(int i,pll x)
{
seg[i+=M]=x;
for (i/=2;i;i/=2) seg[i]=max(seg[i*2],seg[i*2+1]);
}
pll ge(int l,int r,int lo=0,int hi=M,int i=1)
{
if (lo>=l && hi<=r) return seg[i];
if (lo>=r || hi<=l) return {0,0};
int mid=(lo+hi)/2;
return max(ge(l,r,lo,mid,i*2),ge(l,r,mid,hi,i*2+1));
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
cin>>n;
for (int i=0;i<n;++i)
{
cin>>h[i];
pr[i+1]=pr[i]+h[i];
}
for (int i=1;i<=n;++i)
{
pll re=ge(0,i);
if (i==n)
{
cout<<re.x+1<<en;
exit(0);
}
//cout<<re.x<<' '<<re.y<<en;
ll su=pr[i]-re.y;
int po=lower_bound(pr+1,pr+n+1,pr[i]+su)-pr-1;
upd(po,{re.x+1,pr[i]});
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
2 ms |
492 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 |
2 ms |
364 KB |
Output is correct |
8 |
Correct |
1 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 |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
2 ms |
492 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 |
2 ms |
364 KB |
Output is correct |
8 |
Correct |
1 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 |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
1 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
492 KB |
Output is correct |
18 |
Correct |
1 ms |
492 KB |
Output is correct |
19 |
Correct |
2 ms |
492 KB |
Output is correct |
20 |
Correct |
1 ms |
492 KB |
Output is correct |
21 |
Correct |
1 ms |
492 KB |
Output is correct |
22 |
Correct |
1 ms |
492 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
2 ms |
492 KB |
Output is correct |
25 |
Correct |
1 ms |
492 KB |
Output is correct |
26 |
Correct |
1 ms |
492 KB |
Output is correct |
27 |
Correct |
1 ms |
492 KB |
Output is correct |
28 |
Correct |
1 ms |
492 KB |
Output is correct |
29 |
Correct |
1 ms |
492 KB |
Output is correct |
30 |
Correct |
1 ms |
492 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
2 ms |
492 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 |
2 ms |
364 KB |
Output is correct |
8 |
Correct |
1 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 |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
1 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
492 KB |
Output is correct |
18 |
Correct |
1 ms |
492 KB |
Output is correct |
19 |
Correct |
2 ms |
492 KB |
Output is correct |
20 |
Correct |
1 ms |
492 KB |
Output is correct |
21 |
Correct |
1 ms |
492 KB |
Output is correct |
22 |
Correct |
1 ms |
492 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
2 ms |
492 KB |
Output is correct |
25 |
Correct |
1 ms |
492 KB |
Output is correct |
26 |
Correct |
1 ms |
492 KB |
Output is correct |
27 |
Correct |
1 ms |
492 KB |
Output is correct |
28 |
Correct |
1 ms |
492 KB |
Output is correct |
29 |
Correct |
1 ms |
492 KB |
Output is correct |
30 |
Correct |
1 ms |
492 KB |
Output is correct |
31 |
Correct |
2 ms |
512 KB |
Output is correct |
32 |
Correct |
2 ms |
620 KB |
Output is correct |
33 |
Correct |
3 ms |
620 KB |
Output is correct |
34 |
Correct |
3 ms |
492 KB |
Output is correct |
35 |
Correct |
3 ms |
620 KB |
Output is correct |
36 |
Correct |
3 ms |
620 KB |
Output is correct |
37 |
Correct |
2 ms |
492 KB |
Output is correct |
38 |
Correct |
3 ms |
620 KB |
Output is correct |
39 |
Correct |
2 ms |
492 KB |
Output is correct |
40 |
Correct |
3 ms |
620 KB |
Output is correct |
41 |
Correct |
3 ms |
492 KB |
Output is correct |
42 |
Correct |
3 ms |
492 KB |
Output is correct |
43 |
Correct |
3 ms |
492 KB |
Output is correct |
44 |
Correct |
3 ms |
572 KB |
Output is correct |
45 |
Correct |
4 ms |
620 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
2 ms |
492 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 |
2 ms |
364 KB |
Output is correct |
8 |
Correct |
1 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 |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
1 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
492 KB |
Output is correct |
18 |
Correct |
1 ms |
492 KB |
Output is correct |
19 |
Correct |
2 ms |
492 KB |
Output is correct |
20 |
Correct |
1 ms |
492 KB |
Output is correct |
21 |
Correct |
1 ms |
492 KB |
Output is correct |
22 |
Correct |
1 ms |
492 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
2 ms |
492 KB |
Output is correct |
25 |
Correct |
1 ms |
492 KB |
Output is correct |
26 |
Correct |
1 ms |
492 KB |
Output is correct |
27 |
Correct |
1 ms |
492 KB |
Output is correct |
28 |
Correct |
1 ms |
492 KB |
Output is correct |
29 |
Correct |
1 ms |
492 KB |
Output is correct |
30 |
Correct |
1 ms |
492 KB |
Output is correct |
31 |
Correct |
2 ms |
512 KB |
Output is correct |
32 |
Correct |
2 ms |
620 KB |
Output is correct |
33 |
Correct |
3 ms |
620 KB |
Output is correct |
34 |
Correct |
3 ms |
492 KB |
Output is correct |
35 |
Correct |
3 ms |
620 KB |
Output is correct |
36 |
Correct |
3 ms |
620 KB |
Output is correct |
37 |
Correct |
2 ms |
492 KB |
Output is correct |
38 |
Correct |
3 ms |
620 KB |
Output is correct |
39 |
Correct |
2 ms |
492 KB |
Output is correct |
40 |
Correct |
3 ms |
620 KB |
Output is correct |
41 |
Correct |
3 ms |
492 KB |
Output is correct |
42 |
Correct |
3 ms |
492 KB |
Output is correct |
43 |
Correct |
3 ms |
492 KB |
Output is correct |
44 |
Correct |
3 ms |
572 KB |
Output is correct |
45 |
Correct |
4 ms |
620 KB |
Output is correct |
46 |
Correct |
43 ms |
2028 KB |
Output is correct |
47 |
Correct |
48 ms |
4588 KB |
Output is correct |
48 |
Correct |
60 ms |
5484 KB |
Output is correct |
49 |
Correct |
58 ms |
5356 KB |
Output is correct |
50 |
Correct |
61 ms |
5740 KB |
Output is correct |
51 |
Correct |
61 ms |
5740 KB |
Output is correct |
52 |
Correct |
28 ms |
3052 KB |
Output is correct |
53 |
Correct |
17 ms |
2028 KB |
Output is correct |
54 |
Correct |
48 ms |
4972 KB |
Output is correct |
55 |
Correct |
54 ms |
5740 KB |
Output is correct |
56 |
Correct |
51 ms |
5228 KB |
Output is correct |
57 |
Correct |
46 ms |
3836 KB |
Output is correct |
58 |
Correct |
48 ms |
4588 KB |
Output is correct |
59 |
Correct |
53 ms |
5228 KB |
Output is correct |
60 |
Correct |
52 ms |
5228 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
2 ms |
492 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 |
2 ms |
364 KB |
Output is correct |
8 |
Correct |
1 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 |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
1 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
492 KB |
Output is correct |
18 |
Correct |
1 ms |
492 KB |
Output is correct |
19 |
Correct |
2 ms |
492 KB |
Output is correct |
20 |
Correct |
1 ms |
492 KB |
Output is correct |
21 |
Correct |
1 ms |
492 KB |
Output is correct |
22 |
Correct |
1 ms |
492 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
2 ms |
492 KB |
Output is correct |
25 |
Correct |
1 ms |
492 KB |
Output is correct |
26 |
Correct |
1 ms |
492 KB |
Output is correct |
27 |
Correct |
1 ms |
492 KB |
Output is correct |
28 |
Correct |
1 ms |
492 KB |
Output is correct |
29 |
Correct |
1 ms |
492 KB |
Output is correct |
30 |
Correct |
1 ms |
492 KB |
Output is correct |
31 |
Correct |
2 ms |
512 KB |
Output is correct |
32 |
Correct |
2 ms |
620 KB |
Output is correct |
33 |
Correct |
3 ms |
620 KB |
Output is correct |
34 |
Correct |
3 ms |
492 KB |
Output is correct |
35 |
Correct |
3 ms |
620 KB |
Output is correct |
36 |
Correct |
3 ms |
620 KB |
Output is correct |
37 |
Correct |
2 ms |
492 KB |
Output is correct |
38 |
Correct |
3 ms |
620 KB |
Output is correct |
39 |
Correct |
2 ms |
492 KB |
Output is correct |
40 |
Correct |
3 ms |
620 KB |
Output is correct |
41 |
Correct |
3 ms |
492 KB |
Output is correct |
42 |
Correct |
3 ms |
492 KB |
Output is correct |
43 |
Correct |
3 ms |
492 KB |
Output is correct |
44 |
Correct |
3 ms |
572 KB |
Output is correct |
45 |
Correct |
4 ms |
620 KB |
Output is correct |
46 |
Correct |
43 ms |
2028 KB |
Output is correct |
47 |
Correct |
48 ms |
4588 KB |
Output is correct |
48 |
Correct |
60 ms |
5484 KB |
Output is correct |
49 |
Correct |
58 ms |
5356 KB |
Output is correct |
50 |
Correct |
61 ms |
5740 KB |
Output is correct |
51 |
Correct |
61 ms |
5740 KB |
Output is correct |
52 |
Correct |
28 ms |
3052 KB |
Output is correct |
53 |
Correct |
17 ms |
2028 KB |
Output is correct |
54 |
Correct |
48 ms |
4972 KB |
Output is correct |
55 |
Correct |
54 ms |
5740 KB |
Output is correct |
56 |
Correct |
51 ms |
5228 KB |
Output is correct |
57 |
Correct |
46 ms |
3836 KB |
Output is correct |
58 |
Correct |
48 ms |
4588 KB |
Output is correct |
59 |
Correct |
53 ms |
5228 KB |
Output is correct |
60 |
Correct |
52 ms |
5228 KB |
Output is correct |
61 |
Correct |
203 ms |
8428 KB |
Output is correct |
62 |
Correct |
211 ms |
16108 KB |
Output is correct |
63 |
Correct |
248 ms |
19948 KB |
Output is correct |
64 |
Correct |
274 ms |
26476 KB |
Output is correct |
65 |
Correct |
267 ms |
26988 KB |
Output is correct |
66 |
Correct |
268 ms |
26860 KB |
Output is correct |
67 |
Correct |
215 ms |
21484 KB |
Output is correct |
68 |
Correct |
107 ms |
10988 KB |
Output is correct |
69 |
Correct |
239 ms |
22892 KB |
Output is correct |
70 |
Correct |
269 ms |
26860 KB |
Output is correct |
71 |
Correct |
246 ms |
23916 KB |
Output is correct |
72 |
Correct |
234 ms |
18028 KB |
Output is correct |
73 |
Correct |
248 ms |
22508 KB |
Output is correct |
74 |
Correct |
254 ms |
25196 KB |
Output is correct |
75 |
Correct |
256 ms |
25196 KB |
Output is correct |