Submission #1362003

#	Time	Username	Problem	Language	Result	Execution time	Memory
1362003		ezzzay	Duathlon (APIO18_duathlon)	C++20	0 / 100	0 ms	344 KiB

count_triplets

#include<bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define int long long
const int N=6e5+5;
int a[N];
signed main(){
    int n;
    cin>>n;
    cout<<n*(n-1)*(n-2)/3;
    
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 11
• Subtask 3: 0 / 8
• Subtask 4: 0 / 10
• Subtask 5: 0 / 13
• Subtask 6: 0 / 15
• Subtask 7: 0 / 20
• Subtask 8: 0 / 8
• Subtask 9: 0 / 10