N, M, T = map(int, input().split())
A = list(map(int, input().split()))

times = [0] * N
for i in range(M):
  times[A[i] - 1] += 1 

while max(times) - min(times) >= T:
  times[times.index(max(times))] -= 1
  times[times.index(min(times))] += T

print(max(times) )