80510

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
80510	sh25_zhuwy	组合	C++	Accepted	0 MS	248 KB	123	2026-01-04 15:19:32

#include<bits/stdc++.h> using namespace std; int main() { int a,n; cin>>a>>n; cout<<a*n-a-n<<endl; return 0; }