#include <stdio.h>
int main() {
int a=19;
int b=20;
if (a < b) {
}
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbigpIHsgICAKICAgIGludCBhPTE5OwogICAgaW50IGI9MjA7CiAgICBwcmludGYoIm51bWJlcjoiKTsKICAgIHNjYW5mKCIlZCIsJmEpOwogICAgcHJpbnRmKCJudW1iZXI6Iik7CiAgICBzY2FuZigiJWQiLCZiKTsKICAgIGlmIChhIDwgYikgewogICAgICAgIHByaW50ZigiZ3JlYXRlciB2YWx1ZVxuIik7CiAgICB9Cn0=