## GUPTA MECHANICAL

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## [Solution] Practice makes us perfect CodeChef Solution | CodeChef Problem Solution 2022

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

## Xor Palindrome CodeChef Solution

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.

### Constraints

• $1\le {P}_{1},{P}_{2},{P}_{3},{P}_{4}\le 100$