mirror of
https://github.com/tiennm99/codeforces.git
synced 2026-06-09 14:11:38 +00:00
17 lines
379 B
C#
17 lines
379 B
C#
using System;
|
|
|
|
namespace _466A
|
|
{
|
|
class Program
|
|
{
|
|
static void Main(string[] args)
|
|
{
|
|
int[] a = Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
|
|
int b = a[0] * a[2];
|
|
int c = (a[0] % a[1] == 0) ? a[0] / a[1] * a[3] : (a[0] / a[1] + 1) * a[3];
|
|
int d = a[0] / a[1] * a[3] + (a[0] % a[1]) * a[2];
|
|
Console.WriteLine(Math.Min(b, Math.Min(c, d)));
|
|
}
|
|
}
|
|
}
|