array_of_zeros1.js

function runProgram(input){
    var input_arr = input.trim().split("\n")
    input_arr.shift()
    var array = input_arr[0].split(" ").map(Number)
    var odd_sum = 0
    var even_sum = 0

    for(var i = 0; i < array.length; i++)
    {
        if(i%2 == 0)
        {
            even_sum += array[i]
        }
        else
        {
            odd_sum += array[i]
        }
    }
    if(odd_sum == even_sum)
    {
        console.log("YES")
    }
    else
    {
        console.log("NO")
    }
}
process.stdin.resume();
process.stdin.setEncoding("ascii");
let read = "";
process.stdin.on("data", function (input) {
    read += input;
});
process.stdin.on("end", function () {
    read = read.replace(/\n$/,"")
   runProgram(read);
});
process.on("SIGINT", function () {
    read = read.replace(/\n$/,"")
    runProgram(read);
    process.exit(0);
});

runProgram(`2
1 2`)