c = [['3','4','abc'],['a','2','3','asd'],['123','asd','123']]
a = input()
for x in c:
if x[2].isdigit():
x[2]=str(int(x[2]) - 1)
c = [['3','4','abc'],['a','2','3','asd'],['123','asd','123']]
a = input()
for x in c:
if x[2].isdigit():
x[2]=str(int(x[2]) - 1)