fork download
copy 
  1. #include <iostream>
  2. #include <cstdio>
  3.  
  4. using namespace std;
  5.  
  6. int main() {
  7.  
  8.     long long int a,b,sum=0;
  9.     long long int fact=1;
  10.  
  11.     while(cin >> a)
  12.     {
  13.     	cin >> b;
  14.  
  15.     	while(a)
  16.     	{
  17.     		fact*=a; 
  18.     		a--;
  19.     	}
  20.     	sum+=fact;
  21.     	fact=1;
  22.  
  23.     	while(b)
  24.     	{
  25.     		fact*=b;
  26.     		b--;
  27.     	}
  28.     	sum+=fact;
  29.     	fact=1;
  30.  
  31.     	printf("%lld\n",sum);
  32.     	sum=0;
  33.     }
  34.  
  35.  
  36.     return 0;
  37. }
Success #stdin #stdout 0s 3464KB
comments (?)
stdin
copy 
0 20
stdout
copy 
2432902008176640001
https://ideone.com/SQ6XM3
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!