코드포스 466A (codeforces 466A)
Algorithms / 코드포스 (codeforces)
Codeforces Codeforces 466a 코드포스 코드포스 466a Problem - 466a - codeforces
코드포스 466A (codeforces 466A) 문제 풀이 및 코드 (description and code)
Problem - 466A - Codeforces
코드
import java.io.*;
public class CF466A {
static int n, m, a, b;
static String ins[];
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
ins = br.readLine().split(" ");
n = Integer.parseInt(ins[0]);m = Integer.parseInt(ins[1]);
a = Integer.parseInt(ins[2]);b = Integer.parseInt(ins[3]);
int ans = (b > a * m) ? a * n : (m > n) ? Math.min(b, n * a) : (n / m) * b + Math.min((n % m) * a, b);
bw.write(ans + "\n");
bw.flush();bw.close();
}
}