# https://open.kattis.com/problems/slatkisi
# 1s
# 2.0 Easy

# 61 chars: Still too long!
[c,k]=map(int,input().split(" "));t=10**k;print(round(c/t)*t)

# 70 chars: Too long for Top 10 (27..53 chars)
# [c,k]=[int(i) for i in input().split(" ")];t=10**k;print(round(c/t)*t)