shiritori.c

/*
* Exercise 8-2a, shiritori.c
*/

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

int main(void){

    int i = 0;
    char a[17], b[17];
    scanf("%s", a);
    scanf("%s", b);
    if(a[strlen(a)-1] == b[0]) {
        i += 1;
    }
    if(b[strlen(b)-1] == a[0]) {
        i += 2;
    }

    if(i == 0) {
        printf("NG\n");
    }
    else if(i == 1) {
        printf("%s\n%s\n", a, b);
    }
    else if(i == 2) {
        printf("%s\n%s\n", b, a);
    }
    else if(i == 3){
        printf("Any order\n");
    }

        return 0;

}