#include <stdio.h>
int main(void) {
// your code goes here
char s[50];
// reading string
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CgkvLyB5b3VyIGNvZGUgZ29lcyBoZXJlIAoJY2hhciBzWzUwXTsgCiAgICAgIAogICAgLy8gcmVhZGluZyBzdHJpbmcgCiAgICBzY2FuZigiJXMiLHMpOyAgICAgCiAgICBwcmludGYoIiVzIixzKTsKICAgIAoKCXJldHVybiAwOwp9Cg==