C

A C program squares each flag byte as a float, then a ‘forgotten’ Quake-style (long)&y type-pun prints the raw IEEE-754 bits as integers; reversing bits→float→sqrt→char recovers the flag.

A food-ordering binary reads chef notes with gets() into a buffer sitting in front of an int price field, letting an overflow set a negative price that makes the order total negative and prints /flag.