알고리즘/Baekjoon
[Baekjoon] #2839 설탕배달
개발생각11
2024. 4. 18. 23:16
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import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc= new Scanner(System.in);
int n = sc.nextInt();
if (n == 4 || n == 7) {
System.out.println(-1);
}
else if (n % 5 == 0) {
System.out.println(n / 5);
}
else if (n % 5 == 1 || n % 5 == 3) {
System.out.println((n / 5) + 1);
}
else if (n % 5 == 2 || n % 5 == 4) {
System.out.println((n / 5) + 2);
}
}
}
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