[백준] 10707번 : 수도요금 - Java(자바)

https://www.acmicpc.net/problem/10707

import java.util.*;
public class Main {
    public static void main(String args[]) {
        Scanner s=new Scanner(System.in);
        int a=s.nextInt();
        int b=s.nextInt();
        int c=s.nextInt();
        int d=s.nextInt();
        int p=s.nextInt();
        int sum=p*a;
        int sum1=0;
        if(p<=c) sum1=b;
        else sum1=b+(p-c)*d;
        System.out.print(Math.min(sum,sum1));
    }
}