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Submission #936541

# Submission time Handle Problem Language Result Execution time Memory
936541 2024-03-02T06:55:35 Z Warinchai Mountains (NOI20_mountains) C++14
100 / 100
 251 ms 23988 KB 
#include<bits/stdc++.h>
#define int long long
using namespace std;
int ar[300005];
int id[300005];
int l[300005];
int r[300005];
vector<int>v;
struct fenwick{
    int info[300005];
    void upd(int x,int val){
        for(int i=x;i<=300000;i+=i&-i){
            info[i]+=val;
        }
    }
    int fsum(int x){
        int sum=0;
        for(int i=x;i>0;i-=i&-i){
            sum+=info[i];
        }
        return sum;
    }
}fwl,fwr;
int32_t main(){
    int n;cin>>n;
    for(int i=0;i<n;i++){
        cin>>ar[i];
        v.push_back(ar[i]);
    }
    sort(v.begin(),v.end());
    for(int i=0;i<n;i++){
        id[i]=lower_bound(v.begin(),v.end(),ar[i])-v.begin()+1;
    }
    for(int i=0;i<n;i++){
        l[i]=fwl.fsum(id[i]-1);
        fwl.upd(id[i],1);
    }
    for(int i=n-1;i>0;i--){
        r[i]=fwr.fsum(id[i]-1);
        fwr.upd(id[i],1);
    }
    int ans=0;
    for(int i=0;i<n;i++){
        ans+=l[i]*r[i];
    }
    cout<<ans<<"\n";
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12632 KB Output is correct
2 Correct 184 ms 22540 KB Output is correct
3 Correct 173 ms 22312 KB Output is correct
4 Correct 185 ms 23060 KB Output is correct
5 Correct 170 ms 23276 KB Output is correct
6 Correct 170 ms 22456 KB Output is correct
7 Correct 174 ms 22408 KB Output is correct
8 Correct 200 ms 23988 KB Output is correct
9 Correct 171 ms 22392 KB Output is correct
10 Correct 180 ms 23484 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 16240 KB Output is correct
2 Correct 85 ms 13392 KB Output is correct
3 Correct 79 ms 14072 KB Output is correct
4 Correct 85 ms 13620 KB Output is correct
5 Correct 81 ms 14776 KB Output is correct
6 Correct 90 ms 16848 KB Output is correct
7 Correct 84 ms 15908 KB Output is correct
8 Correct 67 ms 16312 KB Output is correct
9 Correct 64 ms 15360 KB Output is correct
10 Correct 2 ms 12636 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 16240 KB Output is correct
2 Correct 85 ms 13392 KB Output is correct
3 Correct 79 ms 14072 KB Output is correct
4 Correct 85 ms 13620 KB Output is correct
5 Correct 81 ms 14776 KB Output is correct
6 Correct 90 ms 16848 KB Output is correct
7 Correct 84 ms 15908 KB Output is correct
8 Correct 67 ms 16312 KB Output is correct
9 Correct 64 ms 15360 KB Output is correct
10 Correct 2 ms 12636 KB Output is correct
11 Correct 120 ms 17576 KB Output is correct
12 Correct 124 ms 16868 KB Output is correct
13 Correct 106 ms 15748 KB Output is correct
14 Correct 112 ms 15608 KB Output is correct
15 Correct 110 ms 16648 KB Output is correct
16 Correct 120 ms 17080 KB Output is correct
17 Correct 115 ms 16056 KB Output is correct
18 Correct 65 ms 16820 KB Output is correct
19 Correct 59 ms 17900 KB Output is correct
20 Correct 3 ms 10584 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Correct 2 ms 10692 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 3 ms 10588 KB Output is correct
5 Correct 2 ms 10588 KB Output is correct
6 Correct 2 ms 10584 KB Output is correct
7 Correct 2 ms 10588 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10588 KB Output is correct
10 Correct 1 ms 10584 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Correct 2 ms 10692 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 3 ms 10588 KB Output is correct
5 Correct 2 ms 10588 KB Output is correct
6 Correct 2 ms 10584 KB Output is correct
7 Correct 2 ms 10588 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10588 KB Output is correct
10 Correct 1 ms 10584 KB Output is correct
11 Correct 9 ms 11100 KB Output is correct
12 Correct 10 ms 11096 KB Output is correct
13 Correct 9 ms 11096 KB Output is correct
14 Correct 8 ms 11100 KB Output is correct
15 Correct 8 ms 11100 KB Output is correct
16 Correct 8 ms 11068 KB Output is correct
17 Correct 10 ms 11096 KB Output is correct
18 Correct 9 ms 11296 KB Output is correct
19 Correct 5 ms 11100 KB Output is correct
20 Correct 2 ms 12636 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 16240 KB Output is correct
2 Correct 85 ms 13392 KB Output is correct
3 Correct 79 ms 14072 KB Output is correct
4 Correct 85 ms 13620 KB Output is correct
5 Correct 81 ms 14776 KB Output is correct
6 Correct 90 ms 16848 KB Output is correct
7 Correct 84 ms 15908 KB Output is correct
8 Correct 67 ms 16312 KB Output is correct
9 Correct 64 ms 15360 KB Output is correct
10 Correct 2 ms 12636 KB Output is correct
11 Correct 120 ms 17576 KB Output is correct
12 Correct 124 ms 16868 KB Output is correct
13 Correct 106 ms 15748 KB Output is correct
14 Correct 112 ms 15608 KB Output is correct
15 Correct 110 ms 16648 KB Output is correct
16 Correct 120 ms 17080 KB Output is correct
17 Correct 115 ms 16056 KB Output is correct
18 Correct 65 ms 16820 KB Output is correct
19 Correct 59 ms 17900 KB Output is correct
20 Correct 3 ms 10584 KB Output is correct
21 Correct 157 ms 19372 KB Output is correct
22 Correct 157 ms 18852 KB Output is correct
23 Correct 158 ms 19020 KB Output is correct
24 Correct 153 ms 19572 KB Output is correct
25 Correct 160 ms 19776 KB Output is correct
26 Correct 159 ms 18864 KB Output is correct
27 Correct 163 ms 19440 KB Output is correct
28 Correct 91 ms 19124 KB Output is correct
29 Correct 92 ms 19896 KB Output is correct
30 Correct 2 ms 10588 KB Output is correct

Subtask #7
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12632 KB Output is correct
2 Correct 184 ms 22540 KB Output is correct
3 Correct 173 ms 22312 KB Output is correct
4 Correct 185 ms 23060 KB Output is correct
5 Correct 170 ms 23276 KB Output is correct
6 Correct 170 ms 22456 KB Output is correct
7 Correct 174 ms 22408 KB Output is correct
8 Correct 200 ms 23988 KB Output is correct
9 Correct 171 ms 22392 KB Output is correct
10 Correct 180 ms 23484 KB Output is correct
11 Correct 86 ms 16240 KB Output is correct
12 Correct 85 ms 13392 KB Output is correct
13 Correct 79 ms 14072 KB Output is correct
14 Correct 85 ms 13620 KB Output is correct
15 Correct 81 ms 14776 KB Output is correct
16 Correct 90 ms 16848 KB Output is correct
17 Correct 84 ms 15908 KB Output is correct
18 Correct 67 ms 16312 KB Output is correct
19 Correct 64 ms 15360 KB Output is correct
20 Correct 2 ms 12636 KB Output is correct
21 Correct 120 ms 17576 KB Output is correct
22 Correct 124 ms 16868 KB Output is correct
23 Correct 106 ms 15748 KB Output is correct
24 Correct 112 ms 15608 KB Output is correct
25 Correct 110 ms 16648 KB Output is correct
26 Correct 120 ms 17080 KB Output is correct
27 Correct 115 ms 16056 KB Output is correct
28 Correct 65 ms 16820 KB Output is correct
29 Correct 59 ms 17900 KB Output is correct
30 Correct 3 ms 10584 KB Output is correct
31 Correct 2 ms 10584 KB Output is correct
32 Correct 2 ms 10692 KB Output is correct
33 Correct 2 ms 10588 KB Output is correct
34 Correct 3 ms 10588 KB Output is correct
35 Correct 2 ms 10588 KB Output is correct
36 Correct 2 ms 10584 KB Output is correct
37 Correct 2 ms 10588 KB Output is correct
38 Correct 2 ms 10840 KB Output is correct
39 Correct 2 ms 10588 KB Output is correct
40 Correct 1 ms 10584 KB Output is correct
41 Correct 9 ms 11100 KB Output is correct
42 Correct 10 ms 11096 KB Output is correct
43 Correct 9 ms 11096 KB Output is correct
44 Correct 8 ms 11100 KB Output is correct
45 Correct 8 ms 11100 KB Output is correct
46 Correct 8 ms 11068 KB Output is correct
47 Correct 10 ms 11096 KB Output is correct
48 Correct 9 ms 11296 KB Output is correct
49 Correct 5 ms 11100 KB Output is correct
50 Correct 2 ms 12636 KB Output is correct
51 Correct 157 ms 19372 KB Output is correct
52 Correct 157 ms 18852 KB Output is correct
53 Correct 158 ms 19020 KB Output is correct
54 Correct 153 ms 19572 KB Output is correct
55 Correct 160 ms 19776 KB Output is correct
56 Correct 159 ms 18864 KB Output is correct
57 Correct 163 ms 19440 KB Output is correct
58 Correct 91 ms 19124 KB Output is correct
59 Correct 92 ms 19896 KB Output is correct
60 Correct 2 ms 10588 KB Output is correct
61 Correct 245 ms 22968 KB Output is correct
62 Correct 248 ms 23648 KB Output is correct
63 Correct 247 ms 22932 KB Output is correct
64 Correct 238 ms 23120 KB Output is correct
65 Correct 249 ms 22520 KB Output is correct
66 Correct 236 ms 22352 KB Output is correct
67 Correct 244 ms 22968 KB Output is correct
68 Correct 251 ms 22376 KB Output is correct
69 Correct 157 ms 20572 KB Output is correct
70 Correct 2 ms 12636 KB Output is correct