답안 #331546

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
331546	2020-11-28T21:16:42 Z	limabeans	Bigger segments (IZhO19_segments)	C++17	100 / 100	87 ms	18924 KB

segments

#include <bits/stdc++.h>
using namespace std;

template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl





using ll = long long;
const ll inf = 1e18;


const int maxn = 5e5 + 10;



int n;
ll a[maxn];
ll pre[maxn];
ll dp[maxn];
int pos[maxn];

ll qry(int l, int r) {
    assert(l<=r);
    return pre[r]-pre[l-1];
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);  cout.tie(0);

    cin>>n;
    for (int i=1; i<=n; i++) {
	cin>>a[i];
    }

    for (int i=1; i<=n; i++) {
	pre[i]=pre[i-1]+a[i];
    }

    for (int i=1; i<=n; i++) {
	pos[i]=max(pos[i],pos[i-1]);
	dp[i]=1+dp[pos[i]];

	int lo=i;
	int hi=n+1;
	int p=-1;
	while (hi-lo>1) {
	    int mid=(lo+hi)/2;
	    if (qry(pos[i]+1,i)<=qry(i+1,mid)) {
		hi=mid;
		p=mid;
	    } else {
		lo=mid;
	    }
	}
	if (~p) {
	    pos[p]=i;
	}
    }

    cout<<dp[n]<<endl;  
    return 0;
}

Subtask #1
13.0 / 13.0

#	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	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	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

Subtask #2
14.0 / 14.0

#	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	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	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	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

Subtask #3
10.0 / 10.0

#	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	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	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	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	1 ms	492 KB	Output is correct
32	Correct	1 ms	492 KB	Output is correct
33	Correct	1 ms	492 KB	Output is correct
34	Correct	2 ms	492 KB	Output is correct
35	Correct	1 ms	492 KB	Output is correct
36	Correct	1 ms	620 KB	Output is correct
37	Correct	2 ms	480 KB	Output is correct
38	Correct	1 ms	492 KB	Output is correct
39	Correct	1 ms	492 KB	Output is correct
40	Correct	1 ms	492 KB	Output is correct
41	Correct	1 ms	492 KB	Output is correct
42	Correct	1 ms	492 KB	Output is correct
43	Correct	1 ms	492 KB	Output is correct
44	Correct	1 ms	492 KB	Output is correct
45	Correct	1 ms	492 KB	Output is correct

Subtask #4
36.0 / 36.0

#	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	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	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	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	1 ms	492 KB	Output is correct
32	Correct	1 ms	492 KB	Output is correct
33	Correct	1 ms	492 KB	Output is correct
34	Correct	2 ms	492 KB	Output is correct
35	Correct	1 ms	492 KB	Output is correct
36	Correct	1 ms	620 KB	Output is correct
37	Correct	2 ms	480 KB	Output is correct
38	Correct	1 ms	492 KB	Output is correct
39	Correct	1 ms	492 KB	Output is correct
40	Correct	1 ms	492 KB	Output is correct
41	Correct	1 ms	492 KB	Output is correct
42	Correct	1 ms	492 KB	Output is correct
43	Correct	1 ms	492 KB	Output is correct
44	Correct	1 ms	492 KB	Output is correct
45	Correct	1 ms	492 KB	Output is correct
46	Correct	13 ms	3180 KB	Output is correct
47	Correct	15 ms	3180 KB	Output is correct
48	Correct	16 ms	3228 KB	Output is correct
49	Correct	23 ms	3180 KB	Output is correct
50	Correct	18 ms	3180 KB	Output is correct
51	Correct	17 ms	3180 KB	Output is correct
52	Correct	9 ms	1900 KB	Output is correct
53	Correct	6 ms	1260 KB	Output is correct
54	Correct	13 ms	3180 KB	Output is correct
55	Correct	16 ms	3180 KB	Output is correct
56	Correct	13 ms	3180 KB	Output is correct
57	Correct	13 ms	3180 KB	Output is correct
58	Correct	14 ms	3308 KB	Output is correct
59	Correct	15 ms	3308 KB	Output is correct
60	Correct	14 ms	3180 KB	Output is correct

Subtask #5
27.0 / 27.0

#	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	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	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	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	1 ms	492 KB	Output is correct
32	Correct	1 ms	492 KB	Output is correct
33	Correct	1 ms	492 KB	Output is correct
34	Correct	2 ms	492 KB	Output is correct
35	Correct	1 ms	492 KB	Output is correct
36	Correct	1 ms	620 KB	Output is correct
37	Correct	2 ms	480 KB	Output is correct
38	Correct	1 ms	492 KB	Output is correct
39	Correct	1 ms	492 KB	Output is correct
40	Correct	1 ms	492 KB	Output is correct
41	Correct	1 ms	492 KB	Output is correct
42	Correct	1 ms	492 KB	Output is correct
43	Correct	1 ms	492 KB	Output is correct
44	Correct	1 ms	492 KB	Output is correct
45	Correct	1 ms	492 KB	Output is correct
46	Correct	13 ms	3180 KB	Output is correct
47	Correct	15 ms	3180 KB	Output is correct
48	Correct	16 ms	3228 KB	Output is correct
49	Correct	23 ms	3180 KB	Output is correct
50	Correct	18 ms	3180 KB	Output is correct
51	Correct	17 ms	3180 KB	Output is correct
52	Correct	9 ms	1900 KB	Output is correct
53	Correct	6 ms	1260 KB	Output is correct
54	Correct	13 ms	3180 KB	Output is correct
55	Correct	16 ms	3180 KB	Output is correct
56	Correct	13 ms	3180 KB	Output is correct
57	Correct	13 ms	3180 KB	Output is correct
58	Correct	14 ms	3308 KB	Output is correct
59	Correct	15 ms	3308 KB	Output is correct
60	Correct	14 ms	3180 KB	Output is correct
61	Correct	67 ms	14188 KB	Output is correct
62	Correct	78 ms	14188 KB	Output is correct
63	Correct	81 ms	16364 KB	Output is correct
64	Correct	86 ms	18540 KB	Output is correct
65	Correct	84 ms	18924 KB	Output is correct
66	Correct	87 ms	18924 KB	Output is correct
67	Correct	72 ms	15212 KB	Output is correct
68	Correct	35 ms	7788 KB	Output is correct
69	Correct	62 ms	15084 KB	Output is correct
70	Correct	85 ms	18924 KB	Output is correct
71	Correct	62 ms	15980 KB	Output is correct
72	Correct	70 ms	16364 KB	Output is correct
73	Correct	72 ms	17004 KB	Output is correct
74	Correct	69 ms	17388 KB	Output is correct
75	Correct	69 ms	17468 KB	Output is correct

답안 #331546

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 14.0 / 14.0

Subtask #3 10.0 / 10.0

Subtask #4 36.0 / 36.0

Subtask #5 27.0 / 27.0

Subtask #1
13.0 / 13.0

Subtask #2
14.0 / 14.0

Subtask #3
10.0 / 10.0

Subtask #4
36.0 / 36.0

Subtask #5
27.0 / 27.0