def initial_reading(n):
list1=[]
for x in range(1,n+1):
list1.append(x)
initial=''.join([str(i) for i in list1])
return initial
a = int(input())
print(initial_reading(a))
ZGVmIGluaXRpYWxfcmVhZGluZyhuKToKICAgIGxpc3QxPVtdCiAgICBmb3IgeCBpbiByYW5nZSgxLG4rMSk6CiAgICAgICAgbGlzdDEuYXBwZW5kKHgpCiAgICBpbml0aWFsPScnLmpvaW4oW3N0cihpKSBmb3IgaSBpbiBsaXN0MV0pCiAgICByZXR1cm4gaW5pdGlhbAphID0gaW50KGlucHV0KCkpCnByaW50KGluaXRpYWxfcmVhZGluZyhhKSk=