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.

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