function processData(input) {
    //Enter your code here
    var matrix = input.split('\n').map(function(s){
        return s.split(' ').map(
            function(n){
                return parseInt(n);
            })
    });
    var magic = evaluateMagic(matrix);

    var cost = 0;
    var oldCost = -1;
    while(!magic.perfect && oldCost != cost){
        oldCost = cost;
        for(i =0; i < 3; i++){
            var dif = magic.linesDif[i];
            if(dif != 0){
                var colIndex = magic.colsDif.indexOf(dif);
                if(colIndex >= 0){
                    cost += Math.abs(dif);
                    matrix[i][colIndex] += dif;
                }else if(dSum1 == dif){
                    matrix[i][i] += dif;
                    cost += Math.abs(dif);
                }else if(dSum2 == dif){
                    matrix[i][2 - i] += dif;
                    cost += Math.abs(dif);
                }
                break;
            }  
        }
        if(oldCost == cost){
            for(i = 0; i < 3; i++){
                var dif = magic.colsDif[i];
                if(dif != 0){
                    if(dSum1 == dif){
                        matrix[i][i] += dif;
                        cost += Math.abs(dif);
                    }else if(dSum2 == dif){
                        matrix[2-i][i] += dif;
                        cost += Math.abs(dif);
                    }
                }  
            }
        }
        magic = evaluateMagic(matrix);
    }
    console.log( cost);//, matrix,magic);
} 

function evaluateMagic(matrix){
    var out = {colsDif:[],linesDif:[],dSum1:0,dSum2:0,perfect:true}
       
    out.dSum1 =  15  - (matrix[0][0] + matrix[1][1] + matrix[2][2]);
    out.dSum2 =  15 - (matrix[2][0] + matrix[1][1] + matrix[0][2]);
    if(out.dSum1 != 0 || out.dSum2 != 0){
            out.perfect = false;
    }
    for(var i = 0; i < 3; i++){
        out.colsDif[i] = 15 - sumCol(matrix,i);
        out.linesDif[i] = 15 -  sumLine(matrix,i);
        if(out.colsDif[i] != 0 || out.linesDif[i] != 0){
            out.perfect = false;
        }
    }
    return out;
}

function sumLine(matrix, line){
    return matrix[line].reduce(function(pre,cur){return pre+cur;},0)
}
function sumCol(matrix, col){
    return matrix.reduce(function(pre,ar){return pre+ar[col];},0)
}


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

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