Submission #439003

#	Time	Username	Problem	Language	Result	Execution time	Memory
439003		skyberg	Mountains (NOI20_mountains)	C++17	64 / 100	2076 ms	2600 KiB

Mountains

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
long long int c[300000];
int main(){
    int n;
    cin >> n;
    long long int ans = 0;
    for(int i = 0; i < n; i++){
        cin >> c[i];
    }
    for(int i = 1; i < n - 1; i++){
        long long int a = 0, b = 0;
        for(int j = 0; j < i; j++){
            if(c[j] < c[i])a++;
        }
        for(int j = i + 1; j < n; j++){
            if(c[j] < c[i])b++;
        }
        ans += a * b;
    }
    cout << ans;
    return 0;
}

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