杭电1108 最小公倍数

#include<stdio.h>
int gcd(int a,int b)
{
int t,r;
if(a<b)
{
t=a;
a=b;
b=t;
}
r=a%b;
while(r!=0)
{
a=b;
b=r;
r=a%b;
}
return b;
}
long int lcm(int a,int b)
{
return a*b/gcd(a,b);
}

int main()
{
int a,b;
while(scanf("%d %d",&a,&b)!=EOF)
{
printf("%ld\n",lcm(a,b));
}
}