n, k, s =map(int, input().split())

if s == 10 ** 9:
    for i in range(k):
        print(s, end="")
    for i in range(n-k):
        print(1, end="")
else:
    for i in range(k):
        print(s, end="")
    for i in range(n-k):
        print(s+1, end="")