Using Java programming language using StdIn and StdOut

In this lab, you will write a program that finds a missing number from a set of three numbers. First your program will read a set of three integers from standard input. Then it will read pairs of numbers, each of which will be two of the original three numbers. You will then output the third (missing) number. For example, if the three numbers are 1, 2, and 3, and your program reads 1 and 3, it will output 2. Given this input: 4 7 5 4 5 7 4 5 7 the output should be: Your program may assume that all inputs are valid integers, and that each pair of numbers consists of numbers from the original three