void fun (int n1,int n2,int *gcd,int *lcm)
    {
        int itr;
        for(itr=1;itr<=n1&&itr<=n2;itr++){
            if(n1%itr==0 && n2%itr==0)
            *gcd =itr;
            }
        *lcm=(n1*n2)/gcd;
    }
    #include<stdio.h>
    int main(){
        int num1,num2,gcd,lcm;
        scanf("%d%d,&num1,$num2");
        if(num<=0 || num2<=0)
        {
            printf("invalid input");
            return 0;
        }
        fun(num1,num2,$gcd,$lcm);
        printf(%d%d,gcd,lcm);
        return 0;
    }