제출 #203725

#제출 시각아이디문제언어결과실행 시간메모리
203725Segtree철인 이종 경기 (APIO18_duathlon)C++14
0 / 100
5 ms376 KiB
#include<iostream>
#include<algorithm>
#include<vector>
#include<set>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
#define rep(i,n) for(int i=0;i<n;i++)
#define chmin(a,b) a=min(a,b)
#define chmax(a,b) a=max(a,b)

int main(){
	ll n; cin>>n;
	cout<<n*(n-1)*(n-2)/3<<endl;
}
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