Javascript Solution - Intro to Tutorial Challenges

hackkerank Intro to Tutorial Challenges

function processData(input) {
    //Enter your code here
    input = input.split('\n')
    var V = input[0]
    var n = input[1]
    var ar = input[2].split(' ')
    console.log(ar.indexOf(V))
} 

process.stdin.resume();
process.stdin.setEncoding("ascii");
_input = "";
process.stdin.on("data", function (input) {
    _input += input;
});

process.stdin.on("end", function () {
   processData(_input);
});