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답안 #1092251

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1092251 2024-09-23T16:00:30 Z whoknow Mountains (NOI20_mountains) C++17
100 / 100
 142 ms 14524 KB 
#include <bits/stdc++.h>
#define ll long long
#define int 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;
int a[N];
namespace sub1
{
	int 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<int>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+=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(long long int, long long int, long long int)':
Mountains.cpp:20:7: warning: statement has no effect [-Wunused-value]
   20 |   for(id;id<=n;id+=(id&(-id)))
      |       ^~
Mountains.cpp: In function 'long long int sub1::get(long long int, long long int)':
Mountains.cpp:26:7: warning: statement has no effect [-Wunused-value]
   26 |   for(id;id>0;id-=((id&(-id))))
      |       ^~
Mountains.cpp: At global scope:
Mountains.cpp:55:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   55 | main()
      | ^~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 98 ms 13776 KB Output is correct
3 Correct 78 ms 14116 KB Output is correct
4 Correct 69 ms 13040 KB Output is correct
5 Correct 69 ms 13092 KB Output is correct
6 Correct 68 ms 12964 KB Output is correct
7 Correct 71 ms 13092 KB Output is correct
8 Correct 90 ms 13216 KB Output is correct
9 Correct 79 ms 13028 KB Output is correct
10 Correct 89 ms 12744 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 7636 KB Output is correct
2 Correct 74 ms 7632 KB Output is correct
3 Correct 81 ms 8660 KB Output is correct
4 Correct 77 ms 9424 KB Output is correct
5 Correct 78 ms 8144 KB Output is correct
6 Correct 79 ms 8148 KB Output is correct
7 Correct 79 ms 9684 KB Output is correct
8 Correct 63 ms 7636 KB Output is correct
9 Correct 70 ms 7892 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 7636 KB Output is correct
2 Correct 74 ms 7632 KB Output is correct
3 Correct 81 ms 8660 KB Output is correct
4 Correct 77 ms 9424 KB Output is correct
5 Correct 78 ms 8144 KB Output is correct
6 Correct 79 ms 8148 KB Output is correct
7 Correct 79 ms 9684 KB Output is correct
8 Correct 63 ms 7636 KB Output is correct
9 Correct 70 ms 7892 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 89 ms 7892 KB Output is correct
12 Correct 85 ms 8288 KB Output is correct
13 Correct 83 ms 8236 KB Output is correct
14 Correct 88 ms 8148 KB Output is correct
15 Correct 81 ms 9684 KB Output is correct
16 Correct 68 ms 8144 KB Output is correct
17 Correct 72 ms 7892 KB Output is correct
18 Correct 58 ms 7892 KB Output is correct
19 Correct 67 ms 8912 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 4 ms 860 KB Output is correct
12 Correct 3 ms 1024 KB Output is correct
13 Correct 5 ms 860 KB Output is correct
14 Correct 5 ms 860 KB Output is correct
15 Correct 5 ms 2908 KB Output is correct
16 Correct 4 ms 2904 KB Output is correct
17 Correct 3 ms 2908 KB Output is correct
18 Correct 3 ms 2908 KB Output is correct
19 Correct 2 ms 2652 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 68 ms 7636 KB Output is correct
2 Correct 74 ms 7632 KB Output is correct
3 Correct 81 ms 8660 KB Output is correct
4 Correct 77 ms 9424 KB Output is correct
5 Correct 78 ms 8144 KB Output is correct
6 Correct 79 ms 8148 KB Output is correct
7 Correct 79 ms 9684 KB Output is correct
8 Correct 63 ms 7636 KB Output is correct
9 Correct 70 ms 7892 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 89 ms 7892 KB Output is correct
12 Correct 85 ms 8288 KB Output is correct
13 Correct 83 ms 8236 KB Output is correct
14 Correct 88 ms 8148 KB Output is correct
15 Correct 81 ms 9684 KB Output is correct
16 Correct 68 ms 8144 KB Output is correct
17 Correct 72 ms 7892 KB Output is correct
18 Correct 58 ms 7892 KB Output is correct
19 Correct 67 ms 8912 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 104 ms 8832 KB Output is correct
22 Correct 99 ms 8656 KB Output is correct
23 Correct 102 ms 8652 KB Output is correct
24 Correct 121 ms 10704 KB Output is correct
25 Correct 99 ms 8660 KB Output is correct
26 Correct 99 ms 8660 KB Output is correct
27 Correct 100 ms 8660 KB Output is correct
28 Correct 54 ms 9164 KB Output is correct
29 Correct 53 ms 8660 KB Output is correct
30 Correct 0 ms 348 KB Output is correct

Subtask #7
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 98 ms 13776 KB Output is correct
3 Correct 78 ms 14116 KB Output is correct
4 Correct 69 ms 13040 KB Output is correct
5 Correct 69 ms 13092 KB Output is correct
6 Correct 68 ms 12964 KB Output is correct
7 Correct 71 ms 13092 KB Output is correct
8 Correct 90 ms 13216 KB Output is correct
9 Correct 79 ms 13028 KB Output is correct
10 Correct 89 ms 12744 KB Output is correct
11 Correct 68 ms 7636 KB Output is correct
12 Correct 74 ms 7632 KB Output is correct
13 Correct 81 ms 8660 KB Output is correct
14 Correct 77 ms 9424 KB Output is correct
15 Correct 78 ms 8144 KB Output is correct
16 Correct 79 ms 8148 KB Output is correct
17 Correct 79 ms 9684 KB Output is correct
18 Correct 63 ms 7636 KB Output is correct
19 Correct 70 ms 7892 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 89 ms 7892 KB Output is correct
22 Correct 85 ms 8288 KB Output is correct
23 Correct 83 ms 8236 KB Output is correct
24 Correct 88 ms 8148 KB Output is correct
25 Correct 81 ms 9684 KB Output is correct
26 Correct 68 ms 8144 KB Output is correct
27 Correct 72 ms 7892 KB Output is correct
28 Correct 58 ms 7892 KB Output is correct
29 Correct 67 ms 8912 KB Output is correct
30 Correct 1 ms 2392 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 4 ms 860 KB Output is correct
42 Correct 3 ms 1024 KB Output is correct
43 Correct 5 ms 860 KB Output is correct
44 Correct 5 ms 860 KB Output is correct
45 Correct 5 ms 2908 KB Output is correct
46 Correct 4 ms 2904 KB Output is correct
47 Correct 3 ms 2908 KB Output is correct
48 Correct 3 ms 2908 KB Output is correct
49 Correct 2 ms 2652 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 104 ms 8832 KB Output is correct
52 Correct 99 ms 8656 KB Output is correct
53 Correct 102 ms 8652 KB Output is correct
54 Correct 121 ms 10704 KB Output is correct
55 Correct 99 ms 8660 KB Output is correct
56 Correct 99 ms 8660 KB Output is correct
57 Correct 100 ms 8660 KB Output is correct
58 Correct 54 ms 9164 KB Output is correct
59 Correct 53 ms 8660 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 122 ms 12948 KB Output is correct
62 Correct 124 ms 13056 KB Output is correct
63 Correct 132 ms 14496 KB Output is correct
64 Correct 127 ms 14388 KB Output is correct
65 Correct 136 ms 13880 KB Output is correct
66 Correct 134 ms 14524 KB Output is correct
67 Correct 134 ms 12952 KB Output is correct
68 Correct 142 ms 13516 KB Output is correct
69 Correct 120 ms 9936 KB Output is correct
70 Correct 1 ms 348 KB Output is correct