답안 #305060

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
305060	2020-09-22T13:47:46 Z	luciocf	Feast (NOI19_feast)	C++14	100 / 100	199 ms	11600 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) 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	102 ms	8316 KB	Output is correct
2	Correct	105 ms	11344 KB	Output is correct
3	Correct	109 ms	11384 KB	Output is correct
4	Correct	110 ms	11328 KB	Output is correct
5	Correct	109 ms	11256 KB	Output is correct
6	Correct	107 ms	11264 KB	Output is correct
7	Correct	106 ms	11128 KB	Output is correct
8	Correct	109 ms	11384 KB	Output is correct
9	Correct	108 ms	11128 KB	Output is correct
10	Correct	111 ms	11384 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	94 ms	8388 KB	Output is correct
2	Correct	100 ms	8568 KB	Output is correct
3	Correct	91 ms	8440 KB	Output is correct
4	Correct	90 ms	8440 KB	Output is correct
5	Correct	103 ms	11128 KB	Output is correct
6	Correct	90 ms	9464 KB	Output is correct
7	Correct	92 ms	9720 KB	Output is correct
8	Correct	108 ms	11384 KB	Output is correct
9	Correct	104 ms	11128 KB	Output is correct
10	Correct	93 ms	9592 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	140 ms	8440 KB	Output is correct
2	Correct	139 ms	8440 KB	Output is correct
3	Correct	138 ms	8440 KB	Output is correct
4	Correct	136 ms	8440 KB	Output is correct
5	Correct	137 ms	8472 KB	Output is correct
6	Correct	143 ms	8440 KB	Output is correct
7	Correct	140 ms	8524 KB	Output is correct
8	Correct	140 ms	8440 KB	Output is correct
9	Correct	142 ms	8568 KB	Output is correct
10	Correct	139 ms	8440 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	512 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	1 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct

Subtask #5
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	512 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	1 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	1 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	512 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	1 ms	512 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	1 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	1 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	512 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	1 ms	384 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	2 ms	384 KB	Output is correct
27	Correct	1 ms	384 KB	Output is correct
28	Correct	1 ms	384 KB	Output is correct
29	Correct	1 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	102 ms	8316 KB	Output is correct
2	Correct	105 ms	11344 KB	Output is correct
3	Correct	109 ms	11384 KB	Output is correct
4	Correct	110 ms	11328 KB	Output is correct
5	Correct	109 ms	11256 KB	Output is correct
6	Correct	107 ms	11264 KB	Output is correct
7	Correct	106 ms	11128 KB	Output is correct
8	Correct	109 ms	11384 KB	Output is correct
9	Correct	108 ms	11128 KB	Output is correct
10	Correct	111 ms	11384 KB	Output is correct
11	Correct	94 ms	8388 KB	Output is correct
12	Correct	100 ms	8568 KB	Output is correct
13	Correct	91 ms	8440 KB	Output is correct
14	Correct	90 ms	8440 KB	Output is correct
15	Correct	103 ms	11128 KB	Output is correct
16	Correct	90 ms	9464 KB	Output is correct
17	Correct	92 ms	9720 KB	Output is correct
18	Correct	108 ms	11384 KB	Output is correct
19	Correct	104 ms	11128 KB	Output is correct
20	Correct	93 ms	9592 KB	Output is correct
21	Correct	140 ms	8440 KB	Output is correct
22	Correct	139 ms	8440 KB	Output is correct
23	Correct	138 ms	8440 KB	Output is correct
24	Correct	136 ms	8440 KB	Output is correct
25	Correct	137 ms	8472 KB	Output is correct
26	Correct	143 ms	8440 KB	Output is correct
27	Correct	140 ms	8524 KB	Output is correct
28	Correct	140 ms	8440 KB	Output is correct
29	Correct	142 ms	8568 KB	Output is correct
30	Correct	139 ms	8440 KB	Output is correct
31	Correct	1 ms	512 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	1 ms	384 KB	Output is correct
36	Correct	1 ms	384 KB	Output is correct
37	Correct	1 ms	384 KB	Output is correct
38	Correct	1 ms	384 KB	Output is correct
39	Correct	0 ms	384 KB	Output is correct
40	Correct	1 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	512 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	1 ms	384 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	2 ms	384 KB	Output is correct
57	Correct	1 ms	384 KB	Output is correct
58	Correct	1 ms	384 KB	Output is correct
59	Correct	1 ms	384 KB	Output is correct
60	Correct	1 ms	384 KB	Output is correct
61	Correct	186 ms	11256 KB	Output is correct
62	Correct	185 ms	11600 KB	Output is correct
63	Correct	153 ms	11256 KB	Output is correct
64	Correct	190 ms	11512 KB	Output is correct
65	Correct	192 ms	11512 KB	Output is correct
66	Correct	199 ms	11512 KB	Output is correct
67	Correct	186 ms	11256 KB	Output is correct
68	Correct	142 ms	11512 KB	Output is correct
69	Correct	139 ms	11388 KB	Output is correct
70	Correct	136 ms	11256 KB	Output is correct

답안 #305060

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