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답안 #459405

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
459405 2021-08-08T13:06:51 Z priyansh5525 Mountains (NOI20_mountains) C++17
100 / 100
 638 ms 50460 KB 
#include<bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds; 
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define ll long long int 
#define vi vector <long long int >
#define pii pair<long long int, long long int>
#define pb push_back
#define pf push_front
#define mod 1000000007
#define ff fflush()
#define mp make_pair
#define vvi vector<vector<ll>> 
#define vvpii vector<vector<pair<long long int , long long int >>>
#define vpii vector <pair<long long int , long long int>>

struct node {
    ll val,f,h,sub;
    struct node *l;
    struct node *r;
};

ll freq(struct node *cur){
    if(cur==NULL)
        return 0;
    else
        return cur->sub;
}


ll height(struct node *cur){
    if(cur==NULL)
        return 0;
    else
        return cur->h;
}

struct node *leftR(struct node *cur){
    struct node *y = cur->r->l;
    struct node *x = cur->r;
    cur->r = y;
    cur->sub = freq(cur->l) + freq(cur->r)+cur->f;
    cur->h = max(height(cur->l),height(cur->r))+1;
    x->l = cur;
    x->sub = freq(x->r)+ freq(x->l) + x->f;
    x->h = max(height(x->l),height(x->r))+1;
    return x;
}

struct node *rightR(struct node *cur){
    struct node *y = cur->l->r;
    struct node *x = cur->l;
    cur->l = y;
    cur->sub = freq(cur->l) + freq(cur->r)+cur->f;
    cur->h = max(height(cur->l),height(cur->r))+1;
    x->r = cur;
    x->sub = freq(x->r)+ freq(x->l) + x->f;
    x->h = max(height(x->l),height(x->r))+1;
    return x;
}

struct node * insert(struct node *cur , ll val , ll * ptr){
   
    if(cur==NULL){
        cur = (struct node *)malloc(sizeof(struct node) );
        cur->val = val; cur->f = 1; cur->h = 1; cur->sub = 1; cur->l = NULL ; cur->r = NULL;
        return cur;
    }
    if(cur->val==val){
        (*ptr) += freq(cur->l);
        cur->f++;
        cur->sub++;
        return cur;
    }
    else if((cur->val)>val){
        cur->sub++;
        cur->l = insert(cur->l , val , ptr);
    }
    else{
        cur->sub++;
        (*ptr) += freq(cur->l)+cur->f;
        cur->r = insert(cur->r , val , ptr);
    }
    cur->h = max(height(cur->r),height(cur->l))+ 1;
    if(height(cur->l)-height(cur->r)>1)
        cur = rightR(cur);
    else if(height(cur->r)-height(cur->l)>1)
        cur = leftR(cur);
    
    return cur;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);    
    ll n;
    cin>>n;
    ll a[n],c1[n] , c2[n];
    for(ll i=0;i<n;i++){
        cin>>a[i];
    }        
    struct node *root = NULL;
    for(ll i=0;i<n;i++){
        ll count = 0;
        root = insert(root , a[i], &count);
        c1[i] = count;
    }
    struct node *root1 = NULL;
    for(ll i=n-1;i>=0;i--){
        ll count = 0;
        root1 = insert(root1 , a[i], &count);
        c2[i] = count;
    }
    ll ans = 0;
    for(ll i=0;i<n;i++){
        // cout<<c1[i]<<" "<<c2[i]<<endl;
        ans = ans + c1[i]*c2[i];
    }
    cout<<ans<<"\n";
    return 0;
}

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 290 ms 50396 KB Output is correct
3 Correct 277 ms 50332 KB Output is correct
4 Correct 279 ms 50340 KB Output is correct
5 Correct 281 ms 50340 KB Output is correct
6 Correct 283 ms 50432 KB Output is correct
7 Correct 281 ms 50432 KB Output is correct
8 Correct 268 ms 50436 KB Output is correct
9 Correct 234 ms 32292 KB Output is correct
10 Correct 238 ms 32280 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 7928 KB Output is correct
2 Correct 36 ms 7852 KB Output is correct
3 Correct 34 ms 7852 KB Output is correct
4 Correct 35 ms 7928 KB Output is correct
5 Correct 37 ms 7828 KB Output is correct
6 Correct 34 ms 7848 KB Output is correct
7 Correct 37 ms 7848 KB Output is correct
8 Correct 29 ms 7920 KB Output is correct
9 Correct 29 ms 7848 KB Output is correct
10 Correct 1 ms 204 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 7928 KB Output is correct
2 Correct 36 ms 7852 KB Output is correct
3 Correct 34 ms 7852 KB Output is correct
4 Correct 35 ms 7928 KB Output is correct
5 Correct 37 ms 7828 KB Output is correct
6 Correct 34 ms 7848 KB Output is correct
7 Correct 37 ms 7848 KB Output is correct
8 Correct 29 ms 7920 KB Output is correct
9 Correct 29 ms 7848 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 63 ms 8208 KB Output is correct
12 Correct 68 ms 8140 KB Output is correct
13 Correct 66 ms 8112 KB Output is correct
14 Correct 66 ms 8140 KB Output is correct
15 Correct 82 ms 8204 KB Output is correct
16 Correct 66 ms 8228 KB Output is correct
17 Correct 64 ms 8216 KB Output is correct
18 Correct 48 ms 8208 KB Output is correct
19 Correct 47 ms 8192 KB Output is correct
20 Correct 1 ms 312 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 204 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 8 ms 1868 KB Output is correct
12 Correct 8 ms 1868 KB Output is correct
13 Correct 8 ms 1992 KB Output is correct
14 Correct 8 ms 1964 KB Output is correct
15 Correct 10 ms 1920 KB Output is correct
16 Correct 9 ms 1984 KB Output is correct
17 Correct 9 ms 1988 KB Output is correct
18 Correct 7 ms 1228 KB Output is correct
19 Correct 4 ms 588 KB Output is correct
20 Correct 1 ms 204 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 7928 KB Output is correct
2 Correct 36 ms 7852 KB Output is correct
3 Correct 34 ms 7852 KB Output is correct
4 Correct 35 ms 7928 KB Output is correct
5 Correct 37 ms 7828 KB Output is correct
6 Correct 34 ms 7848 KB Output is correct
7 Correct 37 ms 7848 KB Output is correct
8 Correct 29 ms 7920 KB Output is correct
9 Correct 29 ms 7848 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 63 ms 8208 KB Output is correct
12 Correct 68 ms 8140 KB Output is correct
13 Correct 66 ms 8112 KB Output is correct
14 Correct 66 ms 8140 KB Output is correct
15 Correct 82 ms 8204 KB Output is correct
16 Correct 66 ms 8228 KB Output is correct
17 Correct 64 ms 8216 KB Output is correct
18 Correct 48 ms 8208 KB Output is correct
19 Correct 47 ms 8192 KB Output is correct
20 Correct 1 ms 312 KB Output is correct
21 Correct 275 ms 21064 KB Output is correct
22 Correct 291 ms 20892 KB Output is correct
23 Correct 337 ms 20904 KB Output is correct
24 Correct 280 ms 20860 KB Output is correct
25 Correct 311 ms 20872 KB Output is correct
26 Correct 295 ms 20904 KB Output is correct
27 Correct 321 ms 20960 KB Output is correct
28 Correct 184 ms 20952 KB Output is correct
29 Correct 191 ms 20916 KB Output is correct
30 Correct 1 ms 204 KB Output is correct

Subtask #7
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 290 ms 50396 KB Output is correct
3 Correct 277 ms 50332 KB Output is correct
4 Correct 279 ms 50340 KB Output is correct
5 Correct 281 ms 50340 KB Output is correct
6 Correct 283 ms 50432 KB Output is correct
7 Correct 281 ms 50432 KB Output is correct
8 Correct 268 ms 50436 KB Output is correct
9 Correct 234 ms 32292 KB Output is correct
10 Correct 238 ms 32280 KB Output is correct
11 Correct 35 ms 7928 KB Output is correct
12 Correct 36 ms 7852 KB Output is correct
13 Correct 34 ms 7852 KB Output is correct
14 Correct 35 ms 7928 KB Output is correct
15 Correct 37 ms 7828 KB Output is correct
16 Correct 34 ms 7848 KB Output is correct
17 Correct 37 ms 7848 KB Output is correct
18 Correct 29 ms 7920 KB Output is correct
19 Correct 29 ms 7848 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 63 ms 8208 KB Output is correct
22 Correct 68 ms 8140 KB Output is correct
23 Correct 66 ms 8112 KB Output is correct
24 Correct 66 ms 8140 KB Output is correct
25 Correct 82 ms 8204 KB Output is correct
26 Correct 66 ms 8228 KB Output is correct
27 Correct 64 ms 8216 KB Output is correct
28 Correct 48 ms 8208 KB Output is correct
29 Correct 47 ms 8192 KB Output is correct
30 Correct 1 ms 312 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 8 ms 1868 KB Output is correct
42 Correct 8 ms 1868 KB Output is correct
43 Correct 8 ms 1992 KB Output is correct
44 Correct 8 ms 1964 KB Output is correct
45 Correct 10 ms 1920 KB Output is correct
46 Correct 9 ms 1984 KB Output is correct
47 Correct 9 ms 1988 KB Output is correct
48 Correct 7 ms 1228 KB Output is correct
49 Correct 4 ms 588 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 275 ms 21064 KB Output is correct
52 Correct 291 ms 20892 KB Output is correct
53 Correct 337 ms 20904 KB Output is correct
54 Correct 280 ms 20860 KB Output is correct
55 Correct 311 ms 20872 KB Output is correct
56 Correct 295 ms 20904 KB Output is correct
57 Correct 321 ms 20960 KB Output is correct
58 Correct 184 ms 20952 KB Output is correct
59 Correct 191 ms 20916 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 556 ms 50392 KB Output is correct
62 Correct 533 ms 50392 KB Output is correct
63 Correct 566 ms 50444 KB Output is correct
64 Correct 590 ms 50436 KB Output is correct
65 Correct 638 ms 50452 KB Output is correct
66 Correct 593 ms 50376 KB Output is correct
67 Correct 545 ms 50460 KB Output is correct
68 Correct 445 ms 32364 KB Output is correct
69 Correct 344 ms 25360 KB Output is correct
70 Correct 1 ms 204 KB Output is correct