1

def filled_buckets(N, M):
    buckets = [0] * N  # Initialize all buckets as empty

    for query in range(1, M + 1):
        if query == 1:
            buckets = [1] * N  # Fill all the buckets with water
        elif query == 2:
            buckets = [0 if i % 2 == 0 else 1 for i in range(1, N + 1)]  # Empty all even-valued buckets
        elif query == 3:
            buckets = [0 if i % 2 == 1 else 1 for i in range(1, N + 1)]  # Empty all odd-valued buckets
        elif query == 4:
            buckets = [0] * N  # Empty all buckets

    return sum(buckets)  # Return the number of filled buckets


# Example usage:
N = 5  # Number of buckets
M = 6  # Number of queries
filled_count = filled_buckets(N, M)
print("Number of filled buckets:", filled_count)