Task about Vova#9539
Vova's height when wearing both heels and a hat is cm. When wearing only heels, Vova's height is cm, and when wearing only a hat, Vova's height is cm. What is Vova's actual height without heels or a hat?
You will receive a single line containing three natural numbers , , and , separated by spaces. Each number is valid and does not exceed .
Output a single number representing Vova's real height.
Example 1