with open("d.txt", "r") as file:
    maxX = 0
    minX = int(file.readline().replace("\n", ""))
    for x in file:
        x = int(x.replace("\n", ""))
        if maxX < x:
            maxX = x
        if minX > x:
            minX = x

print(f"max: {maxX}, min: {minX}, calculate: {maxX - minX}")