import time

# Original function
def fake_bin_v1(x):
    return ''.join('0' if c < '5' else '1' for c in x)

# Second version
def fake_bin_v2(x):
    x = list(x)
    for i in range(0, (len(x))):
        if int(x[i]) < 5:
            x[i] = '0'
        else:
            x[i] = '1'
    return "".join(x)

# Performance wrapper
def performance_test(func, input_data, iterations=100000):
    start_time = time.time()
    for _ in range(iterations):
        func(input_data)
    end_time = time.time()
    return end_time - start_time

# Test data
input_data = "1234567890" * 10

# Testing performance
performance_v1 = performance_test(fake_bin_v1, input_data)
performance_v2 = performance_test(fake_bin_v2, input_data)

# Results
print(f"Version 1: {performance_v1:.6f} seconds")
print(f"Version 2: {performance_v2:.6f} seconds")