# How to Solve CodeForces Problem 231A in Python?

CodeForces problem 231A, also known as “Team”, asks us to count the number of problems that at least two team members know how to solve given a list of teams and the number of problems each team member knows how to solve.

Here’s how to solve this problem in Python:

``````# Get the number of teams
n = int(input())

# Initialize the counter for the number of problems solved by at least two team members
count = 0

# Loop over the teams
for i in range(n):
# Get the number of team members and the number of problems each member knows how to solve
team = list(map(int, input().split()))
# Count the number of team members who know how to solve problems
num_solvers = sum(team)
# If at least two team members know how to solve problems, increment the counter
if num_solvers >= 2:
count += 1

# Print the number of problems solved by at least two team members
print(count)``````

In this solution, we first get the number of teams using `int(input())`. We then initialize a counter for the number of problems solved by at least two team members.

We loop over the teams using `for i in range(n)`. For each team, we get the number of team members and the number of problems each member knows how to solve using `list(map(int, input().split()))`. We then count the number of team members who know how to solve problems using `sum(team)`.

If the number of team members who know how to solve problems is greater than or equal to two, we increment the counter using `count += 1`.

Finally, we print the number of problems solved by at least two team members using `print(count)`.

Note: This solution assumes that each team has exactly three members. If the number of team members can vary, you’ll need to modify the code to handle this case.