Description

You’re given three integers, a, b and c. It is guaranteed that two of these integers are equal to each other. What is the value of the third integer?

Example

For a = 2, b = 7, and c = 2, the output should be extraNumber(a, b, c) = 7.

The two equal numbers area and c. The third number (b) equals 7, which is the answer.

Input/Output

• [execution time limit] 4 seconds (js)

• [input] integer a

  Guaranteed constraints:
  1 \leq a \leq 109.

• [input] integer b

  Guaranteed constraints:
  1 \leq b \leq 109.

• [input] integer c

  Guaranteed constraints:
  1 \leq c \leq 109.

• [output] integer

[JavaScript (ES6)] Syntax Tips

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// Prints help message to the console
// Returns a string
function helloWorld(name) {
    console.log("This prints to the console when you Run Tests");
    return "Hello, " + name;
}