답안 #305081

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
305081	2020-09-22T14:27:19 Z	luciocf	Feast (NOI19_feast)	C++14	100 / 100	277 ms	8824 KB

feast

#include <bits/stdc++.h>
 
#define ff first
#define ss second
 
using namespace std;
 
typedef long long ll;
typedef pair<ll, int> pii;
 
const int maxn = 3e5+10;
const ll inf = 6e14+10;
 
int n;
int a[maxn];
 
ll pref[maxn];
 
pii dp[maxn];
 
int qtd(ll c)
{	
	pii mx = {0, 0};
 
	for (int i = 1; i <= n; i++)
	{
		mx = max(mx, {dp[i-1].ff - pref[i-1], dp[i-1].ss});
 
		dp[i] = max(dp[i-1], {pref[i] + mx.ff - c, mx.ss+1});
	}
 
	return dp[n].ss;
}
 
int main(void)
{
	int k;
	scanf("%d %d", &n, &k);
 
	for (int i = 1; i <= n; i++)
	{
		scanf("%d", &a[i]);
 
		pref[i] = pref[i-1]+1ll*a[i];
	}
 
	ll ini = 0, fim = inf, best = inf;
 
	while (ini <= fim)
	{
		ll mid = (ini+fim)/2ll;
 
		if (qtd(mid) == k)
		{
			best = mid;
			break;
		}

		if (qtd(mid) > k) ini = mid+1;
		else best = mid, fim = mid-1;
	}
 
	qtd(best);
 
	printf("%lld\n", dp[n].ff + 1ll*dp[n].ss*best);
}

Compilation message

feast.cpp: In function 'int main()':
feast.cpp:38:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   38 |  scanf("%d %d", &n, &k);
      |  ~~~~~^~~~~~~~~~~~~~~~~
feast.cpp:42:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   42 |   scanf("%d", &a[i]);
      |   ~~~~~^~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	148 ms	8440 KB	Output is correct
2	Correct	148 ms	8568 KB	Output is correct
3	Correct	151 ms	8568 KB	Output is correct
4	Correct	151 ms	8440 KB	Output is correct
5	Correct	153 ms	8440 KB	Output is correct
6	Correct	151 ms	8312 KB	Output is correct
7	Correct	150 ms	8312 KB	Output is correct
8	Correct	151 ms	8696 KB	Output is correct
9	Correct	147 ms	8440 KB	Output is correct
10	Correct	151 ms	8440 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	103 ms	8312 KB	Output is correct
2	Correct	94 ms	8568 KB	Output is correct
3	Correct	87 ms	8312 KB	Output is correct
4	Correct	138 ms	8440 KB	Output is correct
5	Correct	68 ms	8312 KB	Output is correct
6	Correct	86 ms	8312 KB	Output is correct
7	Correct	138 ms	8824 KB	Output is correct
8	Correct	68 ms	8568 KB	Output is correct
9	Correct	67 ms	8204 KB	Output is correct
10	Correct	137 ms	8440 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	119 ms	8440 KB	Output is correct
2	Correct	124 ms	8312 KB	Output is correct
3	Correct	118 ms	8472 KB	Output is correct
4	Correct	113 ms	8312 KB	Output is correct
5	Correct	118 ms	8440 KB	Output is correct
6	Correct	119 ms	8568 KB	Output is correct
7	Correct	125 ms	8544 KB	Output is correct
8	Correct	117 ms	8568 KB	Output is correct
9	Correct	114 ms	8568 KB	Output is correct
10	Correct	127 ms	8440 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct

Subtask #5
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	384 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct

Subtask #6
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct
11	Correct	1 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	384 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	384 KB	Output is correct
21	Correct	2 ms	416 KB	Output is correct
22	Correct	2 ms	384 KB	Output is correct
23	Correct	2 ms	384 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	2 ms	384 KB	Output is correct
26	Correct	1 ms	384 KB	Output is correct
27	Correct	2 ms	384 KB	Output is correct
28	Correct	1 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	1 ms	384 KB	Output is correct

Subtask #7
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	148 ms	8440 KB	Output is correct
2	Correct	148 ms	8568 KB	Output is correct
3	Correct	151 ms	8568 KB	Output is correct
4	Correct	151 ms	8440 KB	Output is correct
5	Correct	153 ms	8440 KB	Output is correct
6	Correct	151 ms	8312 KB	Output is correct
7	Correct	150 ms	8312 KB	Output is correct
8	Correct	151 ms	8696 KB	Output is correct
9	Correct	147 ms	8440 KB	Output is correct
10	Correct	151 ms	8440 KB	Output is correct
11	Correct	103 ms	8312 KB	Output is correct
12	Correct	94 ms	8568 KB	Output is correct
13	Correct	87 ms	8312 KB	Output is correct
14	Correct	138 ms	8440 KB	Output is correct
15	Correct	68 ms	8312 KB	Output is correct
16	Correct	86 ms	8312 KB	Output is correct
17	Correct	138 ms	8824 KB	Output is correct
18	Correct	68 ms	8568 KB	Output is correct
19	Correct	67 ms	8204 KB	Output is correct
20	Correct	137 ms	8440 KB	Output is correct
21	Correct	119 ms	8440 KB	Output is correct
22	Correct	124 ms	8312 KB	Output is correct
23	Correct	118 ms	8472 KB	Output is correct
24	Correct	113 ms	8312 KB	Output is correct
25	Correct	118 ms	8440 KB	Output is correct
26	Correct	119 ms	8568 KB	Output is correct
27	Correct	125 ms	8544 KB	Output is correct
28	Correct	117 ms	8568 KB	Output is correct
29	Correct	114 ms	8568 KB	Output is correct
30	Correct	127 ms	8440 KB	Output is correct
31	Correct	0 ms	384 KB	Output is correct
32	Correct	1 ms	384 KB	Output is correct
33	Correct	1 ms	384 KB	Output is correct
34	Correct	1 ms	384 KB	Output is correct
35	Correct	0 ms	384 KB	Output is correct
36	Correct	1 ms	384 KB	Output is correct
37	Correct	0 ms	384 KB	Output is correct
38	Correct	0 ms	384 KB	Output is correct
39	Correct	1 ms	384 KB	Output is correct
40	Correct	0 ms	384 KB	Output is correct
41	Correct	1 ms	384 KB	Output is correct
42	Correct	1 ms	384 KB	Output is correct
43	Correct	1 ms	384 KB	Output is correct
44	Correct	1 ms	384 KB	Output is correct
45	Correct	1 ms	384 KB	Output is correct
46	Correct	1 ms	384 KB	Output is correct
47	Correct	1 ms	384 KB	Output is correct
48	Correct	1 ms	384 KB	Output is correct
49	Correct	1 ms	384 KB	Output is correct
50	Correct	1 ms	384 KB	Output is correct
51	Correct	2 ms	416 KB	Output is correct
52	Correct	2 ms	384 KB	Output is correct
53	Correct	2 ms	384 KB	Output is correct
54	Correct	2 ms	384 KB	Output is correct
55	Correct	2 ms	384 KB	Output is correct
56	Correct	1 ms	384 KB	Output is correct
57	Correct	2 ms	384 KB	Output is correct
58	Correct	1 ms	384 KB	Output is correct
59	Correct	2 ms	384 KB	Output is correct
60	Correct	1 ms	384 KB	Output is correct
61	Correct	217 ms	8312 KB	Output is correct
62	Correct	277 ms	8572 KB	Output is correct
63	Correct	182 ms	8440 KB	Output is correct
64	Correct	240 ms	8440 KB	Output is correct
65	Correct	197 ms	8440 KB	Output is correct
66	Correct	222 ms	8500 KB	Output is correct
67	Correct	211 ms	8448 KB	Output is correct
68	Correct	146 ms	8440 KB	Output is correct
69	Correct	143 ms	8568 KB	Output is correct
70	Correct	121 ms	8312 KB	Output is correct

답안 #305081

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 8.0 / 8.0

Subtask #3 18.0 / 18.0

Subtask #4 10.0 / 10.0

Subtask #5 11.0 / 11.0

Subtask #6 20.0 / 20.0

Subtask #7 29.0 / 29.0

Subtask #1
4.0 / 4.0

Subtask #2
8.0 / 8.0

Subtask #3
18.0 / 18.0

Subtask #4
10.0 / 10.0

Subtask #5
11.0 / 11.0

Subtask #6
20.0 / 20.0

Subtask #7
29.0 / 29.0