list=[78,95,66,123,89,98,98,66,121,78,88,98,34,89,98,98,66,74,33,45,78,96,45,34,22,34,56,78,90,56,33,45,22,16,15,17,23,45,66,77,88,121]
x=int(input())
s=0
for i in range((x-1)*6,x*6,1):
    s=s+list[i]
print(s)