Submission #1181729

#	Time	Username	Problem	Language	Result	Execution time	Memory
1181729		taka_gin	Mountains (NOI20_mountains)	C++20	0 / 100	2094 ms	1608 KiB

Mountains

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define fr first
#define sc second
int INTMAX=1e9+7;	
#define endl '\n'
 
void code(){
}
 
void contest() {
    int n;cin>>n;
    vector<int>height(n);
    int sum=0;
    pair<int,int>kac={0,0};
    for(int i=0;i<n;i++){
        cin>>height[i];
    }
    for(int p1=1;p1<n-1;p1++){
        for(int i=0,j=p1+1;i<p1||j<n;j++,i++){
            if(height[i]<height[p1]&&i<p1){
                kac.fr++;
            }
            if(height[j]<height[p1]&&j<n){
                kac.sc++;
            }
        }
        sum+=kac.fr*kac.sc;
        kac.fr=0;kac.sc=0;
    }
    cout<<sum<<endl;
}
 
int main(){
    ios::sync_with_stdio(0);cin.tie(nullptr);
    //int t;cin>>t;while(t--)
    {
        contest();
    }
    //code();
    return 0;
}

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 9
• Subtask 4: 0 / 36
• Subtask 5: 0 / 28
• Subtask 6: 0 / 9
• Subtask 7: 0 / 12