import java.util.Scanner;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int A = in.nextInt();
int B = in.nextInt();
int C = in.nextInt();
int sum = 0;
if (A % 10 == 0 || B % 10 == 0 || C % 10 == 0) {
A = A * 2 / 10;
B = B * 3 / 10;
C = C * 5 / 10;
sum = A + B + C;
System.out.println(sum);
}
}
}

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