답안 #570216

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
570216	2022-05-28T20:42:30 Z	thatsgonzalez	Mountains (NOI20_mountains)	C++14	100 / 100	125 ms	12116 KB

Mountains

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef vector<ll> vl;
typedef pair <ll,ll> pl;
typedef vector<pl> vpl;

#define s second
#define f first

int n;

struct FT
{
    int n; vl dp;
    FT (int n){
        this->n = n;
        dp.assign(n+1,0);
    }

    int lsb(int x){
        return x & (-x);
    }

    ll query(int ind){
        ll res=0;
        while(ind){
            res+=dp[ind];
            ind-=lsb(ind);
        }
        return res;
    }
    
    void add(int ind, ll value){
        while(ind<=n){
            dp[ind]+=value;
            ind+=lsb(ind);
        }
    }
};

int main(){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n;
    FT ft1(n),ft2(n);
    ll a[n]; 
    vpl aux(n);
    for(int i=0; i<n; i++){
      ll x; cin>>x; aux[i]={x,i};
    }
    sort(aux.begin(),aux.end()); a[aux[0].s]=1; int temp=1;
    for(int i=1; i<n; i++){
      if(aux[i].f==aux[i-1].f) a[aux[i].s]=temp;
      else temp++, a[aux[i].s]=temp;
    }
    //for(auto &x: a) cout<<x<<" "; cout<<endl; 
    ll mx=0;
    for(int i=n-1; i>=0; i--){
      mx=max(mx,a[i]);
      ft1.add(a[i],1);
    }
    //cout<<query(mx-1,1)<<endl;
    //int top=n+99;
    ll ans=0;
    for(int i=0; i<n; i++){
      ft1.add(a[i],-1LL);
      //cout<<query(a[i]-1,0)<<" "<<query(a[i]-1,1)<<endl;
      ans+=(ll)(ft1.query(a[i]-1)*(ft2.query(a[i]-1)));
      ft2.add(a[i],1LL);
    }
    cout<<ans<<endl;

}

Subtask #1
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	224 KB	Output is correct
2	Correct	92 ms	11988 KB	Output is correct
3	Correct	90 ms	11988 KB	Output is correct
4	Correct	94 ms	12056 KB	Output is correct
5	Correct	90 ms	12048 KB	Output is correct
6	Correct	89 ms	12048 KB	Output is correct
7	Correct	105 ms	12056 KB	Output is correct
8	Correct	90 ms	11988 KB	Output is correct
9	Correct	100 ms	11988 KB	Output is correct
10	Correct	102 ms	12116 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	119 ms	12048 KB	Output is correct
2	Correct	123 ms	12052 KB	Output is correct
3	Correct	123 ms	12056 KB	Output is correct
4	Correct	112 ms	11988 KB	Output is correct
5	Correct	121 ms	12052 KB	Output is correct
6	Correct	117 ms	12056 KB	Output is correct
7	Correct	113 ms	11988 KB	Output is correct
8	Correct	103 ms	12060 KB	Output is correct
9	Correct	105 ms	11988 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	119 ms	12048 KB	Output is correct
2	Correct	123 ms	12052 KB	Output is correct
3	Correct	123 ms	12056 KB	Output is correct
4	Correct	112 ms	11988 KB	Output is correct
5	Correct	121 ms	12052 KB	Output is correct
6	Correct	117 ms	12056 KB	Output is correct
7	Correct	113 ms	11988 KB	Output is correct
8	Correct	103 ms	12060 KB	Output is correct
9	Correct	105 ms	11988 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	112 ms	11988 KB	Output is correct
12	Correct	108 ms	11988 KB	Output is correct
13	Correct	107 ms	12048 KB	Output is correct
14	Correct	109 ms	12052 KB	Output is correct
15	Correct	112 ms	12048 KB	Output is correct
16	Correct	103 ms	12048 KB	Output is correct
17	Correct	107 ms	12052 KB	Output is correct
18	Correct	87 ms	11988 KB	Output is correct
19	Correct	90 ms	11988 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct

Subtask #5
28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	3 ms	596 KB	Output is correct
12	Correct	4 ms	724 KB	Output is correct
13	Correct	4 ms	596 KB	Output is correct
14	Correct	3 ms	724 KB	Output is correct
15	Correct	3 ms	724 KB	Output is correct
16	Correct	4 ms	724 KB	Output is correct
17	Correct	3 ms	724 KB	Output is correct
18	Correct	3 ms	596 KB	Output is correct
19	Correct	3 ms	724 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	119 ms	12048 KB	Output is correct
2	Correct	123 ms	12052 KB	Output is correct
3	Correct	123 ms	12056 KB	Output is correct
4	Correct	112 ms	11988 KB	Output is correct
5	Correct	121 ms	12052 KB	Output is correct
6	Correct	117 ms	12056 KB	Output is correct
7	Correct	113 ms	11988 KB	Output is correct
8	Correct	103 ms	12060 KB	Output is correct
9	Correct	105 ms	11988 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	112 ms	11988 KB	Output is correct
12	Correct	108 ms	11988 KB	Output is correct
13	Correct	107 ms	12048 KB	Output is correct
14	Correct	109 ms	12052 KB	Output is correct
15	Correct	112 ms	12048 KB	Output is correct
16	Correct	103 ms	12048 KB	Output is correct
17	Correct	107 ms	12052 KB	Output is correct
18	Correct	87 ms	11988 KB	Output is correct
19	Correct	90 ms	11988 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	100 ms	11988 KB	Output is correct
22	Correct	99 ms	12052 KB	Output is correct
23	Correct	97 ms	12052 KB	Output is correct
24	Correct	99 ms	12052 KB	Output is correct
25	Correct	92 ms	12060 KB	Output is correct
26	Correct	96 ms	12044 KB	Output is correct
27	Correct	101 ms	11988 KB	Output is correct
28	Correct	75 ms	12108 KB	Output is correct
29	Correct	75 ms	11988 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct

Subtask #7
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	224 KB	Output is correct
2	Correct	92 ms	11988 KB	Output is correct
3	Correct	90 ms	11988 KB	Output is correct
4	Correct	94 ms	12056 KB	Output is correct
5	Correct	90 ms	12048 KB	Output is correct
6	Correct	89 ms	12048 KB	Output is correct
7	Correct	105 ms	12056 KB	Output is correct
8	Correct	90 ms	11988 KB	Output is correct
9	Correct	100 ms	11988 KB	Output is correct
10	Correct	102 ms	12116 KB	Output is correct
11	Correct	119 ms	12048 KB	Output is correct
12	Correct	123 ms	12052 KB	Output is correct
13	Correct	123 ms	12056 KB	Output is correct
14	Correct	112 ms	11988 KB	Output is correct
15	Correct	121 ms	12052 KB	Output is correct
16	Correct	117 ms	12056 KB	Output is correct
17	Correct	113 ms	11988 KB	Output is correct
18	Correct	103 ms	12060 KB	Output is correct
19	Correct	105 ms	11988 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	112 ms	11988 KB	Output is correct
22	Correct	108 ms	11988 KB	Output is correct
23	Correct	107 ms	12048 KB	Output is correct
24	Correct	109 ms	12052 KB	Output is correct
25	Correct	112 ms	12048 KB	Output is correct
26	Correct	103 ms	12048 KB	Output is correct
27	Correct	107 ms	12052 KB	Output is correct
28	Correct	87 ms	11988 KB	Output is correct
29	Correct	90 ms	11988 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct
31	Correct	1 ms	212 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	1 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	1 ms	212 KB	Output is correct
36	Correct	1 ms	212 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	1 ms	212 KB	Output is correct
39	Correct	1 ms	212 KB	Output is correct
40	Correct	0 ms	212 KB	Output is correct
41	Correct	3 ms	596 KB	Output is correct
42	Correct	4 ms	724 KB	Output is correct
43	Correct	4 ms	596 KB	Output is correct
44	Correct	3 ms	724 KB	Output is correct
45	Correct	3 ms	724 KB	Output is correct
46	Correct	4 ms	724 KB	Output is correct
47	Correct	3 ms	724 KB	Output is correct
48	Correct	3 ms	596 KB	Output is correct
49	Correct	3 ms	724 KB	Output is correct
50	Correct	0 ms	212 KB	Output is correct
51	Correct	100 ms	11988 KB	Output is correct
52	Correct	99 ms	12052 KB	Output is correct
53	Correct	97 ms	12052 KB	Output is correct
54	Correct	99 ms	12052 KB	Output is correct
55	Correct	92 ms	12060 KB	Output is correct
56	Correct	96 ms	12044 KB	Output is correct
57	Correct	101 ms	11988 KB	Output is correct
58	Correct	75 ms	12108 KB	Output is correct
59	Correct	75 ms	11988 KB	Output is correct
60	Correct	0 ms	212 KB	Output is correct
61	Correct	125 ms	12044 KB	Output is correct
62	Correct	120 ms	12048 KB	Output is correct
63	Correct	118 ms	12048 KB	Output is correct
64	Correct	117 ms	12044 KB	Output is correct
65	Correct	113 ms	12060 KB	Output is correct
66	Correct	114 ms	11988 KB	Output is correct
67	Correct	109 ms	11988 KB	Output is correct
68	Correct	119 ms	12044 KB	Output is correct
69	Correct	95 ms	11988 KB	Output is correct
70	Correct	0 ms	212 KB	Output is correct

답안 #570216

Compilation message

Subtask #1 2.0 / 2.0

Subtask #2 4.0 / 4.0

Subtask #3 9.0 / 9.0

Subtask #4 36.0 / 36.0

Subtask #5 28.0 / 28.0

Subtask #6 9.0 / 9.0

Subtask #7 12.0 / 12.0

Subtask #1
2.0 / 2.0

Subtask #2
4.0 / 4.0

Subtask #3
9.0 / 9.0

Subtask #4
36.0 / 36.0

Subtask #5
28.0 / 28.0

Subtask #6
9.0 / 9.0

Subtask #7
12.0 / 12.0