Submission #603143

#	Time	Username	Problem	Language	Result	Execution time	Memory
603143		beaconmc	철인 이종 경기 (APIO18_duathlon)	C++14	0 / 100	1 ms	212 KiB

count_triplets

#include <bits/stdc++.h>

#define FOR(i,x,y) for(int i = x; i < y; i++)
#define ll long long

using namespace std;

int main(){
    int n;
    cin >> n;
    n-=2;
    ll ans = 0;
    FOR(i,0,n){
        ans += (i+1)*(i+2)/2;
    }
    cout << ans;
}

• 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