#786. Rows with a sum greater than 20
How many rows have a sum of elements greater than 20?
### Input
The first line has n m (the number of rows and columns), each of the next n lines has m integers.
### Output
A number.
Examples
Input
2 2 3 8 7 -6
Output
0
Input
2 3 -4 -6 -9 -5 -10 10
Output
0
💡 You can solve it with Python, JavaScript or blocks. Read the input line by line with input(). Don't print a question (like input("Number: ")). Print exactly what the output asks for, nothing more.