#include <stdio.h>

int main(void)
{


FILE *f;
f= fopen(fn, "r");

int p, q;
int f;


p= fscanf (f, "%d", &p );


for(; scanf("%d",&q)==1; p= q){

if( !(p<q) ){


printf("%d %d\n",p,q);
}



fclose(f);


return 0;
}