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++];
}

/////////////// ignore above this line ////////////////////

function main() {

    var arr = [];
    var hGMaxSum=-63;
    for(arr_i = 0; arr_i < 6; arr_i++){
       arr[arr_i] = readLine().split(' ');
       arr[arr_i] = arr[arr_i].map(Number);
    }

    for(var c=0; c<=3; c++){

        //var hGA =[];
        for(var hG=0; hG<=3;hG++){
            var sum=0;
            sum+=parseInt(arr[c][hG]) + parseInt(arr[c][hG+1]) + parseInt(arr[c][hG+2]);
            sum+=parseInt(arr[c+1][hG+1]);
            sum+=parseInt(arr[c+2][hG]) + parseInt(arr[c+2][hG+1]) + parseInt(arr[c+2][hG+2]);

            //hGA.push([sum,[parseInt(arr[c][hG]),parseInt(arr[c][hG+1]) , parseInt(arr[c][hG+2])],[parseInt(arr[c+1][hG+1])],[parseInt(arr[c+2][hG]) , parseInt(arr[c+2][hG+1]), parseInt(arr[c+2][hG+2])]])
            if(sum>=hGMaxSum){hGMaxSum=sum}
            //console.log(hGA);
        }

       //

    }
console.log(hGMaxSum);
}