A Special "[H]appy Birthday" Song!
Problem Number:
12 554
Type of Problem:
Problem Category:
Input:
Random Input
Critical Input
0
Critical Input:
7
a
b
c
d
e
f
g
Random Input:
20
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
Problem Description Link:
Problem Id:
12554
