[ZJ]d294: 算算算....Easy

題目：
http://zerojudge.tw/ShowProblem?problemid=d294
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#include<bits/stdc++.h>
using namespace std;
typedef long long int LL;
int main()
{
LL n,m;
while(scanf("%lld%lld",&n,&m)!=EOF)
{
printf("%lld\n",((n*(n+1))*(m*(m+1)))/4);
}

return 0;
}