CF Edu 57 A

#include<stdio.h>
int main()
{
    long long int n,l,r,x,y,t;
    scanf("%lld",&n);
    while(n--){
        scanf("%lld %lld",&l,&r);
        x=l;
        t=r/l;
        y=l*t;
        printf("%lld %lld\n",x,y);
    }
    return 0;
}