#include <stdio.h>
void print_a_to_b(int a, int b) {
if(a==b){
printf("%d", a);
}
if (a < b) {
printf("%d", a);
print_a_to_b(a + 1);
}else if (a > b) {
printf("%d", a);
print_a_to_b(a - 1);
}
}
int main() {
int x, y;
scanf("%d%d", &x, &y);
print_a_to_b(x, y);
return 0;
}