#36189: 睡覺覺


benjaminhsu124@gmail.com (漂亮的九尾)


a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)

 

a = int(input())
print(a//12*50+a%12*5)