답안 #348840

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
348840	2021-01-15T21:32:52 Z	luciocf	Exercise Deadlines (CCO20_day1problem2)	C++14	25 / 25	146 ms	18408 KB

Main

#include <bits/stdc++.h>

using namespace std;

const int maxn = 2e5+10;

struct FenwickTree
{
	int bit[maxn];

	void upd(int x, int v)
	{
		for (; x < maxn; x += (x&-x))
			bit[x] += v;
	}

	int soma(int x)
	{
		int ans = 0;
		for (; x > 0; x -= (x&-x))
			ans += bit[x];
		return ans;
	}

	int get(int l, int r)
	{
		return soma(r)-soma(l-1);
	}
} BIT;

int a[maxn];

vector<int> lista[maxn];

int main(void)
{
	int n;
	scanf("%d", &n);

	for (int i = 1; i <= n; i++)
	{
		int x;
		scanf("%d", &x);

		lista[x].push_back(i);
	}

	set<int> st;

	for (int i = n; i >= 1; i--)
	{
		for (auto p: lista[i])
			st.insert(p);

		if (st.size() == 0)
		{
			printf("-1\n");
			return 0;
		}
		
		a[i] = *st.rbegin();
		st.erase(a[i]);
	}

	long long ans = 0;
	for (int i = 1; i <= n; i++)
	{
		ans += 1ll*(BIT.get(a[i], n));
		BIT.upd(a[i], 1);
	}

	printf("%lld\n", ans);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:38:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   38 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
Main.cpp:43:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   43 |   scanf("%d", &x);
      |   ~~~~~^~~~~~~~~~

Subtask #1
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	5228 KB	Output is correct
2	Correct	6 ms	5228 KB	Output is correct
3	Correct	6 ms	5228 KB	Output is correct
4	Correct	6 ms	5228 KB	Output is correct
5	Correct	6 ms	5228 KB	Output is correct
6	Correct	6 ms	5228 KB	Output is correct
7	Correct	5 ms	5228 KB	Output is correct
8	Correct	5 ms	5228 KB	Output is correct
9	Correct	5 ms	5228 KB	Output is correct
10	Correct	5 ms	5228 KB	Output is correct
11	Correct	5 ms	5228 KB	Output is correct
12	Correct	5 ms	5228 KB	Output is correct
13	Correct	5 ms	5228 KB	Output is correct
14	Correct	5 ms	5376 KB	Output is correct
15	Correct	5 ms	5228 KB	Output is correct
16	Correct	5 ms	5228 KB	Output is correct
17	Correct	5 ms	5228 KB	Output is correct
18	Correct	5 ms	5228 KB	Output is correct
19	Correct	5 ms	5228 KB	Output is correct
20	Correct	5 ms	5228 KB	Output is correct
21	Correct	5 ms	5228 KB	Output is correct
22	Correct	5 ms	5228 KB	Output is correct
23	Correct	6 ms	5228 KB	Output is correct
24	Correct	7 ms	5228 KB	Output is correct
25	Correct	5 ms	5228 KB	Output is correct
26	Correct	6 ms	5228 KB	Output is correct
27	Correct	5 ms	5228 KB	Output is correct
28	Correct	6 ms	5228 KB	Output is correct
29	Correct	6 ms	5228 KB	Output is correct
30	Correct	5 ms	5228 KB	Output is correct
31	Correct	5 ms	5228 KB	Output is correct
32	Correct	5 ms	5356 KB	Output is correct
33	Correct	5 ms	5228 KB	Output is correct
34	Correct	5 ms	5228 KB	Output is correct
35	Correct	5 ms	5228 KB	Output is correct
36	Correct	6 ms	5356 KB	Output is correct
37	Correct	5 ms	5228 KB	Output is correct
38	Correct	5 ms	5228 KB	Output is correct
39	Correct	6 ms	5228 KB	Output is correct
40	Correct	6 ms	5228 KB	Output is correct
41	Correct	5 ms	5100 KB	Output is correct
42	Correct	6 ms	5228 KB	Output is correct
43	Correct	5 ms	5100 KB	Output is correct
44	Correct	4 ms	5100 KB	Output is correct
45	Correct	4 ms	4972 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	5228 KB	Output is correct
2	Correct	6 ms	5228 KB	Output is correct
3	Correct	6 ms	5228 KB	Output is correct
4	Correct	6 ms	5228 KB	Output is correct
5	Correct	6 ms	5228 KB	Output is correct
6	Correct	6 ms	5228 KB	Output is correct
7	Correct	5 ms	5228 KB	Output is correct
8	Correct	5 ms	5228 KB	Output is correct
9	Correct	5 ms	5228 KB	Output is correct
10	Correct	5 ms	5228 KB	Output is correct
11	Correct	5 ms	5228 KB	Output is correct
12	Correct	5 ms	5228 KB	Output is correct
13	Correct	5 ms	5228 KB	Output is correct
14	Correct	5 ms	5376 KB	Output is correct
15	Correct	5 ms	5228 KB	Output is correct
16	Correct	5 ms	5228 KB	Output is correct
17	Correct	5 ms	5228 KB	Output is correct
18	Correct	5 ms	5228 KB	Output is correct
19	Correct	5 ms	5228 KB	Output is correct
20	Correct	5 ms	5228 KB	Output is correct
21	Correct	5 ms	5228 KB	Output is correct
22	Correct	5 ms	5228 KB	Output is correct
23	Correct	6 ms	5228 KB	Output is correct
24	Correct	7 ms	5228 KB	Output is correct
25	Correct	5 ms	5228 KB	Output is correct
26	Correct	6 ms	5228 KB	Output is correct
27	Correct	5 ms	5228 KB	Output is correct
28	Correct	6 ms	5228 KB	Output is correct
29	Correct	6 ms	5228 KB	Output is correct
30	Correct	5 ms	5228 KB	Output is correct
31	Correct	5 ms	5228 KB	Output is correct
32	Correct	5 ms	5356 KB	Output is correct
33	Correct	5 ms	5228 KB	Output is correct
34	Correct	5 ms	5228 KB	Output is correct
35	Correct	5 ms	5228 KB	Output is correct
36	Correct	6 ms	5356 KB	Output is correct
37	Correct	5 ms	5228 KB	Output is correct
38	Correct	5 ms	5228 KB	Output is correct
39	Correct	6 ms	5228 KB	Output is correct
40	Correct	6 ms	5228 KB	Output is correct
41	Correct	5 ms	5100 KB	Output is correct
42	Correct	6 ms	5228 KB	Output is correct
43	Correct	5 ms	5100 KB	Output is correct
44	Correct	4 ms	5100 KB	Output is correct
45	Correct	4 ms	4972 KB	Output is correct
46	Correct	146 ms	14692 KB	Output is correct
47	Correct	138 ms	14572 KB	Output is correct
48	Correct	125 ms	14700 KB	Output is correct
49	Correct	125 ms	14592 KB	Output is correct
50	Correct	129 ms	14700 KB	Output is correct
51	Correct	124 ms	14572 KB	Output is correct
52	Correct	101 ms	14060 KB	Output is correct
53	Correct	100 ms	14060 KB	Output is correct
54	Correct	81 ms	14052 KB	Output is correct
55	Correct	62 ms	14060 KB	Output is correct
56	Correct	72 ms	14060 KB	Output is correct
57	Correct	77 ms	14060 KB	Output is correct
58	Correct	96 ms	11884 KB	Output is correct
59	Correct	104 ms	12012 KB	Output is correct
60	Correct	94 ms	11904 KB	Output is correct
61	Correct	81 ms	11884 KB	Output is correct
62	Correct	67 ms	11884 KB	Output is correct
63	Correct	82 ms	11884 KB	Output is correct
64	Correct	105 ms	11884 KB	Output is correct
65	Correct	103 ms	11972 KB	Output is correct
66	Correct	98 ms	11884 KB	Output is correct
67	Correct	89 ms	11884 KB	Output is correct
68	Correct	106 ms	11884 KB	Output is correct
69	Correct	104 ms	11884 KB	Output is correct
70	Correct	112 ms	12652 KB	Output is correct
71	Correct	117 ms	12652 KB	Output is correct
72	Correct	121 ms	12652 KB	Output is correct
73	Correct	120 ms	12936 KB	Output is correct
74	Correct	97 ms	12780 KB	Output is correct
75	Correct	114 ms	12720 KB	Output is correct
76	Correct	84 ms	10988 KB	Output is correct
77	Correct	106 ms	18152 KB	Output is correct
78	Correct	58 ms	14060 KB	Output is correct
79	Correct	64 ms	11884 KB	Output is correct
80	Correct	100 ms	11884 KB	Output is correct
81	Correct	103 ms	18408 KB	Output is correct
82	Correct	61 ms	14060 KB	Output is correct
83	Correct	64 ms	12012 KB	Output is correct
84	Correct	126 ms	13804 KB	Output is correct
85	Correct	126 ms	13804 KB	Output is correct
86	Correct	128 ms	13804 KB	Output is correct
87	Correct	61 ms	9964 KB	Output is correct
88	Correct	124 ms	13804 KB	Output is correct

답안 #348840

Compilation message

Subtask #1 17.0 / 17.0

Subtask #2 8.0 / 8.0

Subtask #1
17.0 / 17.0

Subtask #2
8.0 / 8.0