Comparison returning the sum of 2 numbers read on CLI in many programming languages (looks like JavaScript is not so friendly...)

solveMeFirst.c

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int solveMeFirst(int a, int b) {
    return a+b;
}
int main() {
    int num1,num2;
    scanf("%d %d",&num1,&num2);
    int sum; 
    sum = solveMeFirst(num1,num2);
    printf("%d",sum);
    return 0;
}

solveMeFirst.cpp

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

int solveMeFirst(int a, int b) {
  return a+b;
}
int main() {
  int num1, num2;
  int sum;
  cin>>num1>>num2;
  sum = solveMeFirst(num1,num2);
  cout<<sum;
  return 0;
}

solveMeFirst.cs

using System;
using System.Collections.Generic;
using System.IO;
class Solution {
    static int solveMeFirst(int a, int b) { 
        return a+b;
    }
    static void Main(String[] args) {
        int val1 = Convert.ToInt32(Console.ReadLine());
        int val2 = Convert.ToInt32(Console.ReadLine());
        int sum = solveMeFirst(val1,val2);
        Console.WriteLine(sum);
    }
} 

solveMeFirst.go

package main
import "fmt"

func solveMeFirst(a uint32,b uint32) uint32{
    return (a+b)
}

func main() {
    var a, b, res uint32
    fmt.Scanf("%v\n%v", &a,&b)
    res = solveMeFirst(a,b)
    fmt.Println(res)
}

solveMeFirst.java

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    static int solveMeFirst(int a, int b) {
        return a+b;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int a;
        a = in.nextInt();
        int b;
        b = in.nextInt();
        int sum;
        sum = solveMeFirst(a, b);
        System.out.println(sum);
   }
}

solveMeFirst.js

process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();    
});

function readLine() {
    return input_stdin_array[input_currentline++];
}

function solveMeFirst(a, b) {
    return a+b;
}

function main() {
    var a = parseInt(readLine());
    var b = parseInt(readLine());;

    var res = solveMeFirst(a, b);
    console.log(res);
}

solveMeFirst.lol

HAI 1.2

HOW IZ I SOLVEMEFIRST YR NUM1 AN YR NUM2
  FOUND YR SUM OF NUM1 AN NUM2
IF U SAY SO

I HAS A Num1
I HAS A Num2
I HAS A Res
GIMMEH Num1
GIMMEH Num2
Res R I IZ SOLVEMEFIRST YR Num1 AN YR Num2 MKAY
VISIBLE Res
KTHXBYE

solveMeFirst.php

<?php
function solveMeFirst($a,$b){
  return $a + $b;
}
$handle = fopen ("php://stdin","r");
$_a = fgets($handle);
$_b = fgets($handle);
$sum = solveMeFirst((int)$_a,(int)$_b);
print ($sum);
fclose($handle);

solveMeFirst.py

def solveMeFirst(a,b):
  return a+b

num1 = int(input())
num2 = int(input())
res = solveMeFirst(num1,num2)
print(res)

solveMeFirst.rb

def solveMeFirst (a, b)
  # Hint: Type return a+b below   
  
end
val1 = gets.to_i
val2 = gets.to_i
sum = solveMeFirst(val1,val2)
print (sum)

solveMeFirst.scala

object Solution {

    def main(args: Array[String]) {
        println(io.Source.stdin.getLines().take(2).map(_.toInt).sum)
    }
}

solveMeFirst.sh

#!/bin/bash

read a
read b
echo $(($a + $b))

I think if I would be able to return in time, I'd learn Scala instead of JavaScript and PHP...