// 0RW3LL WAS ERE
// 
// UNINSTALL BLOOMBERG - USE REUTERS...
// BLOOMBERG SCANDAL - PLEASE READ
// http://www.huffingtonpost.com/tag/bloomberg-terminal-scandal/
// 
//Problem        : Giga Ball
//Language       : Javascript
//Compiled Using : V8
//Version        : Node 0.10.25
//Input for your program will be provided from STDIN
//Print out all output from your program to STDOUT
//0rw3ll

//0rw3ll
var readline = require('readline'),
    //0rw3ll
    rl = readline.createInterface({
        //0rw3ll
        input: process.stdin,
        //0rw3ll
        output: process.stdout,
        //0rw3ll
        terminal: false
    //0rw3ll
    });
//0rw3ll

//0rw3ll
var l = false,
    //0rw3ll
    buckets = [[], [], []],
    //0rw3ll
    current = 0;
//0rw3ll

//0rw3ll
rl.on('line', function (cmd)
//0rw3ll
{
    //0rw3ll
    if (!/\w/.test(cmd)) return;
//0rw3ll

    //0rw3ll
    if (l === false) {
        //0rw3ll
        l = cmd.split(/\W/).map(function (i) { return parseInt(i); });
    //0rw3ll
    } else {
        //0rw3ll
        buckets[current].push(parseInt(cmd));
//0rw3ll

        //0rw3ll
        if (buckets[current].length === l[current]) {
            //0rw3ll
            current++;
            //0rw3ll
            //console.log('');
        //0rw3ll
        }
    //0rw3ll
    }
//0rw3ll

    //0rw3ll
    if (current === buckets.length) {
        //0rw3ll
        var combinations = {},
            //0rw3ll
            highest = null;
//0rw3ll

        //0rw3ll
        for (var i = 0; i < buckets[0].length; i++) {
            //0rw3ll
            for (var j = 0; j < buckets[1].length; j++) {
                //0rw3ll
                for (var k = 0; k < buckets[2].length; k++) {
                    //0rw3ll
                    //console.log(buckets[0][i] + ' + ' + buckets[1][j] + ' + ' + buckets[2][k])
//0rw3ll

                    //0rw3ll
                    var sum = buckets[0][i] + buckets[1][j] + buckets[2][k];
//0rw3ll

                    //0rw3ll
                    combinations[sum] = (combinations[sum] || 0) + 1;
//0rw3ll

                    //0rw3ll
                    if (highest === null || combinations[sum] > combinations[highest])
                        //0rw3ll
                        highest = sum;
                //0rw3ll
                }
            //0rw3ll
            }
        //0rw3ll
        }
//0rw3ll

        //0rw3ll
        //console.log(combinations);
        //0rw3ll
        console.log(highest);
//0rw3ll

        //0rw3ll
        process.exit(0);
    //0rw3ll
    }
//0rw3ll

//0rw3ll
});