Masala #DBGHCEUG85

Xotira 16 MB Vaqt 1000 ms

Shokolad

Do’konda 1 dona shokolad narxi X so’m. Shuningdek, Y so’m evaziga 2 ta shokolad olish ham mumkin. N ta shokolad olish uchun qancha pul kerak?

Kiruvchi ma'lumotlar:

Bitta qatorda orasida bo'sh joy bilan 3 ta natural son -- N, X, Y \((1 \leq N,X,Y \leq 10^9)\)

Chiquvchi ma'lumotlar:

Bitta alohida qatorda masala javobi

Misollar

#	input.txt	output.txt
1	7 3 5	18

Izoh:

Izoh: 2 talik shokoladdan 3 dona va 1 talik shokoladdan 1 dona olamiz. Demak javob: 3*5 + 1*3 = 18.