include <stdio.h>

int main(void) {

int a, b, c, d;
scanf("%d", &a);
b = a / 100;
c = a % 100 / 10;
d = a % 100 % 10;
if (d == 0 && c != 0) {
	printf("%d%d", c, b);
}
if (d == 0 && c == 0) {
	printf("%d", b);
} else if (d != 0 && c != 0 || d != 0 && c == 0) {
	printf("%d%d%d", d, c, b);
}
return 0;

}