"""第一题： 线段数和三角形数"""
n = int(input())
if n == 1:
print(0, 0)
elif n == 2:
print(1, 0)
elif n == 3:
print(3, 1)
else:
# print(int(6+(n-4)/2*(2+(n-4)*2)), int(6+(n-4)/2*(2+(n-4)*2))-2)
print((n-3)*3+3, (n-3)*3+1)
"""第二题：最小交换次数"""
n = int(input())
tmp = input().split()
nums = [int(i) for i in tmp]
length = len(nums)
def sort1(nums):
res = 0
for i in range(length):
swapped = False
for j in range(length-1):
if nums[j] > nums[j+1]:
swapped = True
nums[j], nums[j+1] = nums[j+1], nums[j]
res += 1
if not swapped:
break
return res
def sort2(nums):
res = 0
for i in range(length):
swapped = False
for j in range(length-1):
if nums[j] < nums[j+1]:
swapped = True
nums[j], nums[j+1] = nums[j+1], nums[j]
res += 1
if not swapped:
break
return res
print(min(sort1(nums), sort2(nums)))
"""第三题： 搬家"""
tmp = input().split()
N, W = int(tmp[0]), int(tmp[1])
sums = 0
for i in range(N):
sums += int(input())
if sums == 0:
print(0)
else:
if sums <= W:
print(1)
elif sums == N * W:
print(N)
else:
print(sums//W + 1)