답안 #1092542

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1092542	2024-09-24T10:45:20 Z	Sunbae	Bigger segments (IZhO19_segments)	C++17	100 / 100	72 ms	20900 KB

segments

#include <bits/stdc++.h>
#define z exit(0)
#define mp make_pair
#define F first
#define S second
typedef long long ll;
using namespace std;
const ll INF = 1e15;
const int N = 5e5 + 5, inf = 1e8;
pair<int,ll> dp[N];
ll a[N], qs[N];
ll sum(int l, int r){ return qs[r] - ((l) ? qs[l-1] : 0);}
pair<int,ll> f(pair<int,ll> x, pair<int,ll> y){
	if((x.F > y.F) || (x.F == y.F && x.S <= y.S)) return x;
	return y;
}
signed main(){
	int n; scanf("%d", &n);
	for(int i = 0; i<n; ++i) scanf("%lld", a+i), qs[i] = a[i];
	for(int i = 1; i<n; ++i) qs[i] += qs[i-1];
	fill(dp, dp+n, mp(-inf, INF));
	dp[0] = {1, a[0]};
	for(int i = 1; i<n; ++i){
		if(a[i] >= dp[i-1].S){
			dp[i] = f(dp[i], mp(dp[i-1].F + 1, a[i]));
		}else{
			dp[i] = f(dp[i], mp(dp[i-1].F, dp[i-1].S + a[i]));
			int low = i+1, high = n-1, idx = -1;
			while(low <= high){
				int mid = low + ((high-low)>>1);
				if(sum(i, mid) >= dp[i-1].S) idx = mid, high = mid-1;
				else low = mid+1;
			}
			if(idx != -1) dp[idx] = f(dp[idx], mp(dp[i-1].F + 1, sum(i, idx)));
		}
	}
	printf("%d", dp[n-1].F);
}

Compilation message

segments.cpp: In function 'int main()':
segments.cpp:18:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |  int n; scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
segments.cpp:19:32: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  for(int i = 0; i<n; ++i) scanf("%lld", a+i), qs[i] = a[i];
      |                           ~~~~~^~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	448 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	448 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1 ms	348 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	1 ms	348 KB	Output is correct
36	Correct	1 ms	348 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1 ms	348 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	1 ms	348 KB	Output is correct
41	Correct	0 ms	348 KB	Output is correct
42	Correct	0 ms	496 KB	Output is correct
43	Correct	1 ms	348 KB	Output is correct
44	Correct	1 ms	348 KB	Output is correct
45	Correct	1 ms	348 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	448 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1 ms	348 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	1 ms	348 KB	Output is correct
36	Correct	1 ms	348 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1 ms	348 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	1 ms	348 KB	Output is correct
41	Correct	0 ms	348 KB	Output is correct
42	Correct	0 ms	496 KB	Output is correct
43	Correct	1 ms	348 KB	Output is correct
44	Correct	1 ms	348 KB	Output is correct
45	Correct	1 ms	348 KB	Output is correct
46	Correct	11 ms	3844 KB	Output is correct
47	Correct	13 ms	3928 KB	Output is correct
48	Correct	14 ms	4408 KB	Output is correct
49	Correct	12 ms	4444 KB	Output is correct
50	Correct	10 ms	4444 KB	Output is correct
51	Correct	15 ms	4560 KB	Output is correct
52	Correct	8 ms	2396 KB	Output is correct
53	Correct	5 ms	1640 KB	Output is correct
54	Correct	11 ms	3688 KB	Output is correct
55	Correct	14 ms	4444 KB	Output is correct
56	Correct	9 ms	3896 KB	Output is correct
57	Correct	9 ms	3928 KB	Output is correct
58	Correct	12 ms	3932 KB	Output is correct
59	Correct	8 ms	3940 KB	Output is correct
60	Correct	9 ms	3932 KB	Output is correct

Subtask #5
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	448 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1 ms	348 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	1 ms	348 KB	Output is correct
36	Correct	1 ms	348 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1 ms	348 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	1 ms	348 KB	Output is correct
41	Correct	0 ms	348 KB	Output is correct
42	Correct	0 ms	496 KB	Output is correct
43	Correct	1 ms	348 KB	Output is correct
44	Correct	1 ms	348 KB	Output is correct
45	Correct	1 ms	348 KB	Output is correct
46	Correct	11 ms	3844 KB	Output is correct
47	Correct	13 ms	3928 KB	Output is correct
48	Correct	14 ms	4408 KB	Output is correct
49	Correct	12 ms	4444 KB	Output is correct
50	Correct	10 ms	4444 KB	Output is correct
51	Correct	15 ms	4560 KB	Output is correct
52	Correct	8 ms	2396 KB	Output is correct
53	Correct	5 ms	1640 KB	Output is correct
54	Correct	11 ms	3688 KB	Output is correct
55	Correct	14 ms	4444 KB	Output is correct
56	Correct	9 ms	3896 KB	Output is correct
57	Correct	9 ms	3928 KB	Output is correct
58	Correct	12 ms	3932 KB	Output is correct
59	Correct	8 ms	3940 KB	Output is correct
60	Correct	9 ms	3932 KB	Output is correct
61	Correct	41 ms	18004 KB	Output is correct
62	Correct	55 ms	18008 KB	Output is correct
63	Correct	62 ms	18408 KB	Output is correct
64	Correct	58 ms	20560 KB	Output is correct
65	Correct	49 ms	20820 KB	Output is correct
66	Correct	72 ms	20900 KB	Output is correct
67	Correct	52 ms	16724 KB	Output is correct
68	Correct	26 ms	8540 KB	Output is correct
69	Correct	56 ms	16980 KB	Output is correct
70	Correct	72 ms	20816 KB	Output is correct
71	Correct	35 ms	18012 KB	Output is correct
72	Correct	42 ms	18268 KB	Output is correct
73	Correct	41 ms	18936 KB	Output is correct
74	Correct	42 ms	19284 KB	Output is correct
75	Correct	40 ms	19280 KB	Output is correct

답안 #1092542

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