sw = 40.0 dw = 78.0 hdw = dw / 2.0
w = 20.0 h =1.0 d = 0.2 ss="abcdefghijklmnopqrstuvwxyz0123456789#!$%^&*()-=\\[];'`,./"
rnd = srand()
while gets()
xr = -hdw; y = h * 1.0; maxxl = -999
s = ""
while xr < hdw
x = xr * (1 + y) - y * w / 2
i = (x / (1 + h) + sw / 2)
if (1 < i && i < $_.length)
c = $_[i, 1].to_i
else
c = 0
end
y = h - d * c
xl = xr - w * y / (1 + y)
if xl < -hdw || xl >= hdw || xl <= maxxl
tt = rand(ss.length)
c = ss[tt, 1]
else
c = s[xl + hdw, 1]
maxxl = xl
end
s += c
xr += 1
end
print(s, "\n")
end