제출 #568696

#제출 시각아이디문제언어결과실행 시간메모리
568696inluminas철인 이종 경기 (APIO18_duathlon)C++17
0 / 100
18 ms1568 KiB
#include"bits/stdc++.h" using namespace std; #define ll long long #define endl "\n" #define fastio ios_base::sync_with_stdio(false) #define inf LLONG_MAX #define l first #define r second int main(){ fastio; int n,m; cin>>n>>m; for(int i=1;i<=m;i++){ int u,v; cin>>u>>v; } ll ans=n*(n-1)*(n-2); ans/=6; cout<<ans*2<<endl; return 0; }
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