Triple Sevens

Time limit1sMemory limit2048 MB

Summary

Given three wheels of digits, check whether every wheel contains the digit 7, then print 777 if so and 0 otherwise.

Level: Easy1 of 10
Topics: Implementation
Solved: No attempts yet

Problem

Eddy is overseeing the construction of some new slot machines. Each slot machine has three wheels, and each wheel can show one of several different digits. When the machine is activated, each wheel shows a random digit. The goal is for every wheel to be able to show the digit $7$ .

A slot machine is good if each wheel is capable of showing the digit $7$ , and bad otherwise. For a given slot machine, determine whether it is good or bad.

Input

The first line contains a single integer $n$ $(1 \leq n \leq 10)$ , the number of different digits on each wheel. Each wheel has the same number of digits.

Each of the next three lines contains $n$ distinct digits (in the range from $0$ to $9$ ). These are the digits on each of the three wheels.

Output

Output a single integer, which is $777$ if the slot machine is good, $0$ otherwise.

Examples2

Example 1
Input
```
2
0 7
7 3
7 0
```
Expected output
```
777
```
Example 2
Input
```
2
0 7
7 3
3 9
```
Expected output
```
0
```