Task
Time limit: 1000 ms,
Memory limit: 256 Mb

For the test in the class, the students received A - fives, B - fours, C - threes and D - two
Write a program that determines how many students received a grade that exceeded the average score

Input: 4 numbers are sent to the program input (A, B, C, D), one per line
Output: output one number - how many students received an assessment exceeding the average score
 
Примеры

№	Input	Output
1	10 6 2 3	10

Prohibited statements:else; and; or; not