Practice makes us perfect Codechef Python Solution

Most programmers will tell you that one of the ways to improve your performance in competitive programming is to practice a lot of problems.

Our Chef took the above advice very seriously and decided to set a target for himself.

Chef decides to solve at least $10$ problems every week for $4$ weeks.

Given the number of problems he actually solved in each week over $4$ weeks as $P_{1}, P_{2}, P_{3},$ and $P_{4}$ , output the number of weeks in which Chef met his target.

Input Format

There is a single line of input, with $4$ integers $P_{1}, P_{2}, P_{3},$ and $P_{4}$ . These are the number of problems solved by Chef in each of the $4$ weeks.

Output Format

Output a single integer in a single line - the number of weeks in which Chef solved at least $10$ problems.