//package test;

import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int sum = 0;
		for (int i = 0; i < 5; i++) {
			sum += sc.nextInt();
		}
		System.out.println(15 - sum);
		sc.close();
	}
} import java.util.Scanner; Scanner java.util class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int sum = 0;
		for (int i = 0; i < 5; i++) {
			sum += sc.nextInt();
		}
		System.out.println(15 - sum);
		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int sum = 0;
		for (int i = 0; i < 5; i++) {
			sum += sc.nextInt();
		}
		System.out.println(15 - sum);
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		int sum = 0;
		for (int i = 0; i < 5; i++) {
			sum += sc.nextInt();
		}
		System.out.println(15 - sum);
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int sum = 0; sum 0 for (int i = 0; i < 5; i++) {
			sum += sc.nextInt();
		} int i = 0; int i = 0; i 0 i < 5 i 5 i++ i++ i {
			sum += sc.nextInt();
		} {
			sum += sc.nextInt();
		} sum += sc.nextInt() sum sc.nextInt() sc.nextInt sc System.out.println(15 - sum) System.out.println System.out System System.out 15 - sum 15 sum sc.close() sc.close sc String[] args args
//package test;

import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int sum = 0;
		for (int i = 0; i < 5; i++) {
			sum += sc.nextInt();
		}
		System.out.println(15 - sum);
		sc.close();
	}
}