/* str01.c  : string input & output */

#include <stdio.h>
#include <string.h>

int main(void)
{  
    char s1[256],s2[256];
    char t1[256];

    scanf("%s %s",s1,s2);

    strcpy(t1,s1);
    strcat(t1,s2);

    printf("%s %s\n",s1,s2);
    printf("%s\n",t1);

    return 0;
}