import random
import re
n0=input('input n:')
m0=input('input m:')
mm=[]
if re.match(r'\d+',n0) and re.match(r'\d+',m0):
n=int(n0)
m=int(m0)
if 1<=m<=n:
while len(mm)<m:
a=random.randint(1,n)
if a in mm:
pass
else:
mm.append(a)
else:
print('wrong input,exit')
print(mm)