#!/usr/bin/python3
"""
0-main
"""
island_perimeter = __import__('0-island_perimeter').island_perimeter

if __name__ == "__main__":
    grid = [
        [0, 0, 0, 0, 0, 0],
        [0, 1, 0, 0, 0, 0],
        [0, 1, 0, 0, 0, 0],
        [0, 1, 1, 1, 0, 0],
        [0, 0, 0, 0, 0, 0]
    ]
    print(island_perimeter(grid))
    