阶乘求和

Posted 2021-01-22 wbyzs

#include<iostream>
using namespace std;
int main()
{
	int m,n,x=1,y=1,i;
	cin>>m>>n;
	for(i=1;i<=m;i++) x*=i;
	for(i=1;i<=n;i++) y*=i;
	cout<<x+y<<endl;
	return 0;
}