total_attempts = 256*256*256
successful_attempts = 0

for a in range(0, 256):
    for b in range(0, 256):
        for c in range(0, 256):
            if a + b + c > 300:
                successful_attempts += 1
                
print(f"Iterations: {total_attempts}")
print(f"Valid sums: {successful_attempts}")
print(f"Probability: {successful_attempts / total_attempts}")