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Submission #466233

# Submission time Handle Problem Language Result Execution time Memory
466233 2021-08-18T11:30:51 Z prvocislo Exercise Deadlines (CCO20_day1problem2) C++17
25 / 25
 145 ms 7112 KB 
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <queue>
typedef long long ll;
using namespace std;

const int maxn = 1 << 18;
int maxi[maxn * 2], alive[maxn * 2];
void merge(int i)
{
	maxi[i] = max(maxi[i << 1], maxi[i << 1 | 1]);
	alive[i] = alive[i << 1] + alive[i << 1 | 1];
}
void remove_element(int i)
{
	i += maxn;
	maxi[i] = -1, alive[i] = 0;
	for (i = (i >> 1); i > 0; i >>= 1) merge(i);
}
int last_big(int x)
{
	int i = 1;
	for (; i < maxn; )
	{
		if (maxi[i << 1 | 1] < x) i = i << 1;
		else i = i << 1 | 1;
	}
	return i - maxn;
}
int sum(int l, int r)
{
	int s = 0;
	for (l += maxn, r += maxn + 1; l < r; l >>= 1, r >>= 1)
	{
		if (l & 1) s += alive[l++];
		if (r & 1) s += alive[--r];
	}
	return s;
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	for (int i = 0; i < maxn * 2; i++) maxi[i] = -1;
	int n;
	cin >> n;
	vector<int> d(n);
	for (int i = 0; i < n; i++) cin >> d[i], maxi[i + maxn] = --d[i], alive[i + maxn] = 1;
	for (int i = maxn - 1; i > 0; i--) merge(i);
	vector<int> v = d;
	sort(v.begin(), v.end());
	for (int i = 0; i < n; i++) if (v[i] < i)
	{
		cout << "-1\n";
		return 0;
	}
	ll ans = 0;
	for (int i = n - 1; i >= 0; i--)
	{
		int j = last_big(i);
		//cout << j << endl;
		ans += sum(j, n - 1) - 1;
		remove_element(j);
	}
	cout << ans << "\n";
	return 0;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3460 KB Output is correct
2 Correct 5 ms 3404 KB Output is correct
3 Correct 5 ms 3404 KB Output is correct
4 Correct 5 ms 3404 KB Output is correct
5 Correct 5 ms 3404 KB Output is correct
6 Correct 5 ms 3448 KB Output is correct
7 Correct 5 ms 3404 KB Output is correct
8 Correct 5 ms 3404 KB Output is correct
9 Correct 5 ms 3404 KB Output is correct
10 Correct 5 ms 3404 KB Output is correct
11 Correct 5 ms 3404 KB Output is correct
12 Correct 5 ms 3404 KB Output is correct
13 Correct 5 ms 3404 KB Output is correct
14 Correct 5 ms 3404 KB Output is correct
15 Correct 5 ms 3404 KB Output is correct
16 Correct 5 ms 3404 KB Output is correct
17 Correct 5 ms 3404 KB Output is correct
18 Correct 5 ms 3404 KB Output is correct
19 Correct 5 ms 3472 KB Output is correct
20 Correct 5 ms 3532 KB Output is correct
21 Correct 5 ms 3404 KB Output is correct
22 Correct 5 ms 3404 KB Output is correct
23 Correct 5 ms 3412 KB Output is correct
24 Correct 5 ms 3404 KB Output is correct
25 Correct 7 ms 3404 KB Output is correct
26 Correct 5 ms 3404 KB Output is correct
27 Correct 5 ms 3412 KB Output is correct
28 Correct 5 ms 3404 KB Output is correct
29 Correct 6 ms 3404 KB Output is correct
30 Correct 5 ms 3404 KB Output is correct
31 Correct 4 ms 3404 KB Output is correct
32 Correct 5 ms 3448 KB Output is correct
33 Correct 5 ms 3404 KB Output is correct
34 Correct 5 ms 3404 KB Output is correct
35 Correct 5 ms 3404 KB Output is correct
36 Correct 5 ms 3404 KB Output is correct
37 Correct 5 ms 3404 KB Output is correct
38 Correct 5 ms 3412 KB Output is correct
39 Correct 5 ms 3412 KB Output is correct
40 Correct 6 ms 3404 KB Output is correct
41 Correct 4 ms 3404 KB Output is correct
42 Correct 6 ms 3404 KB Output is correct
43 Correct 3 ms 3404 KB Output is correct
44 Correct 3 ms 3276 KB Output is correct
45 Correct 3 ms 3276 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3460 KB Output is correct
2 Correct 5 ms 3404 KB Output is correct
3 Correct 5 ms 3404 KB Output is correct
4 Correct 5 ms 3404 KB Output is correct
5 Correct 5 ms 3404 KB Output is correct
6 Correct 5 ms 3448 KB Output is correct
7 Correct 5 ms 3404 KB Output is correct
8 Correct 5 ms 3404 KB Output is correct
9 Correct 5 ms 3404 KB Output is correct
10 Correct 5 ms 3404 KB Output is correct
11 Correct 5 ms 3404 KB Output is correct
12 Correct 5 ms 3404 KB Output is correct
13 Correct 5 ms 3404 KB Output is correct
14 Correct 5 ms 3404 KB Output is correct
15 Correct 5 ms 3404 KB Output is correct
16 Correct 5 ms 3404 KB Output is correct
17 Correct 5 ms 3404 KB Output is correct
18 Correct 5 ms 3404 KB Output is correct
19 Correct 5 ms 3472 KB Output is correct
20 Correct 5 ms 3532 KB Output is correct
21 Correct 5 ms 3404 KB Output is correct
22 Correct 5 ms 3404 KB Output is correct
23 Correct 5 ms 3412 KB Output is correct
24 Correct 5 ms 3404 KB Output is correct
25 Correct 7 ms 3404 KB Output is correct
26 Correct 5 ms 3404 KB Output is correct
27 Correct 5 ms 3412 KB Output is correct
28 Correct 5 ms 3404 KB Output is correct
29 Correct 6 ms 3404 KB Output is correct
30 Correct 5 ms 3404 KB Output is correct
31 Correct 4 ms 3404 KB Output is correct
32 Correct 5 ms 3448 KB Output is correct
33 Correct 5 ms 3404 KB Output is correct
34 Correct 5 ms 3404 KB Output is correct
35 Correct 5 ms 3404 KB Output is correct
36 Correct 5 ms 3404 KB Output is correct
37 Correct 5 ms 3404 KB Output is correct
38 Correct 5 ms 3412 KB Output is correct
39 Correct 5 ms 3412 KB Output is correct
40 Correct 6 ms 3404 KB Output is correct
41 Correct 4 ms 3404 KB Output is correct
42 Correct 6 ms 3404 KB Output is correct
43 Correct 3 ms 3404 KB Output is correct
44 Correct 3 ms 3276 KB Output is correct
45 Correct 3 ms 3276 KB Output is correct
46 Correct 105 ms 6980 KB Output is correct
47 Correct 108 ms 7076 KB Output is correct
48 Correct 93 ms 7036 KB Output is correct
49 Correct 94 ms 7108 KB Output is correct
50 Correct 105 ms 7092 KB Output is correct
51 Correct 100 ms 7012 KB Output is correct
52 Correct 133 ms 7000 KB Output is correct
53 Correct 131 ms 7108 KB Output is correct
54 Correct 107 ms 6940 KB Output is correct
55 Correct 88 ms 6896 KB Output is correct
56 Correct 105 ms 6932 KB Output is correct
57 Correct 110 ms 7000 KB Output is correct
58 Correct 129 ms 7004 KB Output is correct
59 Correct 130 ms 6988 KB Output is correct
60 Correct 133 ms 6964 KB Output is correct
61 Correct 103 ms 7012 KB Output is correct
62 Correct 88 ms 6968 KB Output is correct
63 Correct 107 ms 6928 KB Output is correct
64 Correct 127 ms 6988 KB Output is correct
65 Correct 145 ms 6980 KB Output is correct
66 Correct 115 ms 7104 KB Output is correct
67 Correct 104 ms 7112 KB Output is correct
68 Correct 131 ms 6988 KB Output is correct
69 Correct 123 ms 6984 KB Output is correct
70 Correct 111 ms 7028 KB Output is correct
71 Correct 111 ms 6984 KB Output is correct
72 Correct 105 ms 7036 KB Output is correct
73 Correct 114 ms 6968 KB Output is correct
74 Correct 89 ms 6988 KB Output is correct
75 Correct 113 ms 7024 KB Output is correct
76 Correct 42 ms 6984 KB Output is correct
77 Correct 85 ms 7108 KB Output is correct
78 Correct 88 ms 6964 KB Output is correct
79 Correct 89 ms 6980 KB Output is correct
80 Correct 43 ms 6924 KB Output is correct
81 Correct 89 ms 7112 KB Output is correct
82 Correct 91 ms 6980 KB Output is correct
83 Correct 87 ms 7008 KB Output is correct
84 Correct 115 ms 6976 KB Output is correct
85 Correct 112 ms 7024 KB Output is correct
86 Correct 121 ms 7068 KB Output is correct
87 Correct 49 ms 7060 KB Output is correct
88 Correct 119 ms 7048 KB Output is correct