path: root/progs/a322.py

def super_seq(X, Y, m, n):
	if (not m):
		return n
	if (not n):
		return m
	if (X[m - 1] == Y[n - 1]):
		return 1 + super_seq(X, Y, m - 1, n - 1)
	return 1 + min(super_seq(X, Y, m - 1, n),	super_seq(X, Y, m, n - 1))