oj.uz

Submission #1092254

# Submission time Handle Problem Language Result Execution time Memory
1092254 2024-09-23T16:01:56 Z whoknow Mountains (NOI20_mountains) C++17
100 / 100
 135 ms 9172 KB 
#include <bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define N 300005
#define ii pair<int,int>
#define bit(i,j) ((i>>j)&1)
#define sz(i) (int)i.size()
#define endl '\n'
using namespace std;
int n;
ll a[N];
namespace sub1
{
	ll res;
	int bit[N][2];
	void upd(int id,int v,int k)
	{
		for(id;id<=n;id+=(id&(-id)))
			bit[id][k]+=v;
	}
	int get(int id,int k)
	{
		int t=0;
		for(id;id>0;id-=((id&(-id))))
			t+=bit[id][k];
		return t;
	}
	void compress()
	{
		vector<ll>v;
		for(int i=1;i<=n;i++)
			v.push_back(a[i]);
		sort(v.begin(),v.end());
		v.resize(unique(v.begin(),v.end())-v.begin());
		for(int i=1;i<=n;i++)
			a[i]=lower_bound(v.begin(),v.end(),a[i])-v.begin()+1;
	}
	void solve()
	{
		compress();
		for(int i=2;i<=n;i++)
			upd(a[i],1,1);
		upd(a[1],1,0);
		for(int i=2;i<n;i++)
		{
			res+=1LL*get(a[i]-1,0)*get(a[i]-1,1);
			upd(a[i],-1,1);
			upd(a[i],1,0);
		}
		cout<<res;
	}
}
main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin>>n;
	for(int i=1;i<=n;i++)
		cin>>a[i];
	sub1::solve();
}

Compilation message

Mountains.cpp: In function 'void sub1::upd(int, int, int)':
Mountains.cpp:19:7: warning: statement has no effect [-Wunused-value]
   19 |   for(id;id<=n;id+=(id&(-id)))
      |       ^~
Mountains.cpp: In function 'int sub1::get(int, int)':
Mountains.cpp:25:7: warning: statement has no effect [-Wunused-value]
   25 |   for(id;id>0;id-=((id&(-id))))
      |       ^~
Mountains.cpp: At global scope:
Mountains.cpp:54:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   54 | main()
      | ^~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 64 ms 7240 KB Output is correct
3 Correct 63 ms 7624 KB Output is correct
4 Correct 61 ms 7244 KB Output is correct
5 Correct 62 ms 8144 KB Output is correct
6 Correct 64 ms 8396 KB Output is correct
7 Correct 63 ms 7372 KB Output is correct
8 Correct 69 ms 7624 KB Output is correct
9 Correct 65 ms 7888 KB Output is correct
10 Correct 66 ms 8396 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 7380 KB Output is correct
2 Correct 65 ms 7376 KB Output is correct
3 Correct 70 ms 8148 KB Output is correct
4 Correct 65 ms 8912 KB Output is correct
5 Correct 70 ms 8656 KB Output is correct
6 Correct 67 ms 9172 KB Output is correct
7 Correct 64 ms 8404 KB Output is correct
8 Correct 65 ms 7376 KB Output is correct
9 Correct 57 ms 7120 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 7380 KB Output is correct
2 Correct 65 ms 7376 KB Output is correct
3 Correct 70 ms 8148 KB Output is correct
4 Correct 65 ms 8912 KB Output is correct
5 Correct 70 ms 8656 KB Output is correct
6 Correct 67 ms 9172 KB Output is correct
7 Correct 64 ms 8404 KB Output is correct
8 Correct 65 ms 7376 KB Output is correct
9 Correct 57 ms 7120 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 70 ms 7636 KB Output is correct
12 Correct 67 ms 8400 KB Output is correct
13 Correct 67 ms 8656 KB Output is correct
14 Correct 74 ms 7892 KB Output is correct
15 Correct 70 ms 7120 KB Output is correct
16 Correct 68 ms 8404 KB Output is correct
17 Correct 62 ms 7124 KB Output is correct
18 Correct 47 ms 7120 KB Output is correct
19 Correct 45 ms 7124 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2512 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2512 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 3 ms 2652 KB Output is correct
12 Correct 3 ms 2652 KB Output is correct
13 Correct 3 ms 2652 KB Output is correct
14 Correct 3 ms 2652 KB Output is correct
15 Correct 3 ms 2652 KB Output is correct
16 Correct 3 ms 2652 KB Output is correct
17 Correct 3 ms 2652 KB Output is correct
18 Correct 3 ms 2700 KB Output is correct
19 Correct 2 ms 2652 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 7380 KB Output is correct
2 Correct 65 ms 7376 KB Output is correct
3 Correct 70 ms 8148 KB Output is correct
4 Correct 65 ms 8912 KB Output is correct
5 Correct 70 ms 8656 KB Output is correct
6 Correct 67 ms 9172 KB Output is correct
7 Correct 64 ms 8404 KB Output is correct
8 Correct 65 ms 7376 KB Output is correct
9 Correct 57 ms 7120 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 70 ms 7636 KB Output is correct
12 Correct 67 ms 8400 KB Output is correct
13 Correct 67 ms 8656 KB Output is correct
14 Correct 74 ms 7892 KB Output is correct
15 Correct 70 ms 7120 KB Output is correct
16 Correct 68 ms 8404 KB Output is correct
17 Correct 62 ms 7124 KB Output is correct
18 Correct 47 ms 7120 KB Output is correct
19 Correct 45 ms 7124 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 105 ms 8908 KB Output is correct
22 Correct 105 ms 8144 KB Output is correct
23 Correct 103 ms 8656 KB Output is correct
24 Correct 105 ms 8404 KB Output is correct
25 Correct 100 ms 7116 KB Output is correct
26 Correct 94 ms 7124 KB Output is correct
27 Correct 105 ms 8780 KB Output is correct
28 Correct 46 ms 7124 KB Output is correct
29 Correct 45 ms 7124 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct

Subtask #7
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 64 ms 7240 KB Output is correct
3 Correct 63 ms 7624 KB Output is correct
4 Correct 61 ms 7244 KB Output is correct
5 Correct 62 ms 8144 KB Output is correct
6 Correct 64 ms 8396 KB Output is correct
7 Correct 63 ms 7372 KB Output is correct
8 Correct 69 ms 7624 KB Output is correct
9 Correct 65 ms 7888 KB Output is correct
10 Correct 66 ms 8396 KB Output is correct
11 Correct 69 ms 7380 KB Output is correct
12 Correct 65 ms 7376 KB Output is correct
13 Correct 70 ms 8148 KB Output is correct
14 Correct 65 ms 8912 KB Output is correct
15 Correct 70 ms 8656 KB Output is correct
16 Correct 67 ms 9172 KB Output is correct
17 Correct 64 ms 8404 KB Output is correct
18 Correct 65 ms 7376 KB Output is correct
19 Correct 57 ms 7120 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 70 ms 7636 KB Output is correct
22 Correct 67 ms 8400 KB Output is correct
23 Correct 67 ms 8656 KB Output is correct
24 Correct 74 ms 7892 KB Output is correct
25 Correct 70 ms 7120 KB Output is correct
26 Correct 68 ms 8404 KB Output is correct
27 Correct 62 ms 7124 KB Output is correct
28 Correct 47 ms 7120 KB Output is correct
29 Correct 45 ms 7124 KB Output is correct
30 Correct 1 ms 2392 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 0 ms 2512 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 0 ms 2396 KB Output is correct
40 Correct 0 ms 2396 KB Output is correct
41 Correct 3 ms 2652 KB Output is correct
42 Correct 3 ms 2652 KB Output is correct
43 Correct 3 ms 2652 KB Output is correct
44 Correct 3 ms 2652 KB Output is correct
45 Correct 3 ms 2652 KB Output is correct
46 Correct 3 ms 2652 KB Output is correct
47 Correct 3 ms 2652 KB Output is correct
48 Correct 3 ms 2700 KB Output is correct
49 Correct 2 ms 2652 KB Output is correct
50 Correct 0 ms 2396 KB Output is correct
51 Correct 105 ms 8908 KB Output is correct
52 Correct 105 ms 8144 KB Output is correct
53 Correct 103 ms 8656 KB Output is correct
54 Correct 105 ms 8404 KB Output is correct
55 Correct 100 ms 7116 KB Output is correct
56 Correct 94 ms 7124 KB Output is correct
57 Correct 105 ms 8780 KB Output is correct
58 Correct 46 ms 7124 KB Output is correct
59 Correct 45 ms 7124 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 135 ms 8776 KB Output is correct
62 Correct 119 ms 7116 KB Output is correct
63 Correct 126 ms 8904 KB Output is correct
64 Correct 116 ms 6988 KB Output is correct
65 Correct 125 ms 7884 KB Output is correct
66 Correct 133 ms 8508 KB Output is correct
67 Correct 126 ms 7880 KB Output is correct
68 Correct 124 ms 7880 KB Output is correct
69 Correct 104 ms 7376 KB Output is correct
70 Correct 1 ms 2396 KB Output is correct