# Kids3 Example
# Source code file: kids3.py
# Input file: kids.txt

# Compute the maximum age of the girls.

maximum = 0

fin = open("kids.txt", "r")

# Read and process first line from file
line = fin.readline( )
fields = line.split(",")
name = fields[0].strip( )
gender = fields[1].strip( )
age = int(fields[2].strip( ))
if gender == "M":
    maximum = max(maximum, age)

# Process lines until end of file
while line != "":
    fields = line.split(",")
    name = fields[0].strip( )
    gender = fields[1].strip( )
    age = int(fields[2].strip( ))
    if gender == "M":
        maximum = max(maximum, age)
        
    line = fin.readline( )

print("Maximum age of boys:", maximum)
fin.close( )

# Output:
# Maximum age of boys: 10