import sys

if len(sys.argv) < 2:
    print "usage: python", sys.argv[0], "num1 num2 ..."
    sys.exit(1)

for x in sys.argv[1:]:
    try:
        x = int(x)
        print "The square of ", x, " is ", x * x
    except ValueError:
        print x, "cannot be converted"