"""
[2909: 캔디 구매](https://www.acmicpc.net/problem/2909)
Tier: Bronze 2
Category: 구현
"""
def solution():
c, k = map(int,input().split())
k2 = 10 ** k
k3 = 10 ** (k - 1) * 5
c += k3
c = int(c // k2 * k2)
return c
if __name__ == '__main__':
print(solution())