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Submission #348840

# Submission time Handle Problem Language Result Execution time Memory
348840 2021-01-15T21:32:52 Z luciocf Exercise Deadlines (CCO20_day1problem2) C++14
25 / 25
 146 ms 18408 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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