oj.uz

답안 #386885

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
386885 2021-04-07T15:21:38 Z fadi57 Mountains (NOI20_mountains) C++14
66 / 100
 519 ms 29804 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
const ll mx=3e5+10;
const int mod= 1e9+7 ;
const ll inf=1e9+5;

//***while there is life there is hope
int n;

int arr[mx*4];



map<ll,int>mp;

void compres(){
int cnt=0;
for(auto &it:mp){
        //cout<<it.first;
    it.second=cnt;
    cnt++;
}

}
void update(int node,int st,int en,int pos){


if(st==en){
    arr[node]++;
    return;
}
int mid=(st+en)/2;

if(pos<=mid){
    update(node*2,st,mid,pos);
}else{
 update(node*2+1,mid+1,en,pos);
 }
 arr[node]=arr[node*2]+arr[node*2+1];
 return ;



}
int query(int node,int st,int en,int l,int r){

if(st>r||en<l){return 0;}

if(st>=l&&en<=r){return arr[node];}
int mid=(st+en)/2;
return query(node*2,st,mid,l,r)+query(node*2+1,mid+1,en,l,r);


}
int l[mx];int r[mx];
int main() {
cin>>n;
vector<ll>v(n);
for(int i=0;i<n;i++){


   cin>>v[i];
  mp[v[i]];
}
compres();
for(int i=0;i<n;i++){


    v[i]=mp[v[i]];
   // cout<<v[i];
}

for(int i=0;i<n;i++){
    l[i]=query(1,0,mx,0,v[i]-1);
   // cout<<l[i]<<" ";
    update(1,0,mx,v[i]);
}
memset(arr,0,sizeof(arr));ll ans=0;
for(int i=n-1;i>=0;i--){
    r[i]=query(1,0,mx,0,v[i]-1);
    //cout<<r[i]<<" ";
    update(1,0,mx,v[i]);
    ans+=r[i]*l[i];
}cout<<ans;

}

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 508 ms 29676 KB Output is correct
3 Correct 509 ms 29676 KB Output is correct
4 Correct 511 ms 29804 KB Output is correct
5 Correct 510 ms 29548 KB Output is correct
6 Correct 512 ms 29596 KB Output is correct
7 Correct 519 ms 29548 KB Output is correct
8 Correct 511 ms 29420 KB Output is correct
9 Correct 477 ms 20248 KB Output is correct
10 Correct 472 ms 20204 KB Output is correct

Subtask #2
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 177 ms 10348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 177 ms 10348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 5100 KB Output is correct
2 Correct 5 ms 5248 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 5 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 5100 KB Output is correct
2 Correct 5 ms 5248 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 5 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 30 ms 5996 KB Output is correct
12 Correct 30 ms 5996 KB Output is correct
13 Correct 23 ms 5996 KB Output is correct
14 Correct 23 ms 5996 KB Output is correct
15 Correct 23 ms 5996 KB Output is correct
16 Correct 23 ms 6124 KB Output is correct
17 Correct 23 ms 5996 KB Output is correct
18 Correct 25 ms 5612 KB Output is correct
19 Correct 14 ms 5228 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct

Subtask #6
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 177 ms 10348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 508 ms 29676 KB Output is correct
3 Correct 509 ms 29676 KB Output is correct
4 Correct 511 ms 29804 KB Output is correct
5 Correct 510 ms 29548 KB Output is correct
6 Correct 512 ms 29596 KB Output is correct
7 Correct 519 ms 29548 KB Output is correct
8 Correct 511 ms 29420 KB Output is correct
9 Correct 477 ms 20248 KB Output is correct
10 Correct 472 ms 20204 KB Output is correct
11 Incorrect 177 ms 10348 KB Output isn't correct
12 Halted 0 ms 0 KB -