#include<stdio.h>
int main(){
    int i,a,b;
    scanf("%d%d",&a,&b);
    for (i=a;;i++){
        if(i%a==0&&i%b==0)
         {
         printf("%d",i);break; }
    }
    return 0;
}

#include<stdio.h>
void Swap(int *a,int *b) 
{
                             
*a^=*b;
*b^=*a;
*a^=*b;
}

GYS(int a,int b)
{   int c;
    
    while(a%b!=0)
    {
        c=a%b;
        a=b;
        b=c;}
    return b;
    
}
int main()
{
    int a,b;
    puts("Please input a and b:");
    scanf("%d%d",&a,&b);
    Swap(&a,&b);
    printf("%d and %d \n最大公约数为:%d\n",a,b,GYS(a,b));
    return 0;
}