#include <stdio.h>
int main(void) {
int a, b;
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CglpbnQgYSwgYjsKCSBwcmludGYoIk5oYXAgdmFvIHNvIGE6ICIpOwoKICAgICBzY2FuZigiJWQiLCAmYSk7CgogICAgCgogICAgIHByaW50ZigiTmhhcCB2YW8gc28gYjogIik7CgogICAgIHNjYW5mKCIlZCIsICZiKTsKCXJldHVybiAwOwp9Cg==