function solve(arr) {

    function matrixCreation(arr) {

        let matrix = arr.map(el => el.split(' '));

        matrix = matrix.map(el => el.map(el2 => Number(el2)));

        return matrix;

    }


    function indexGathering() {

        let matrix = matrixCreation(arr);

        let arrOfIn = [];

        let j = 0;

        let k = matrix[0].length - 1;

        for (let i = 0; i < matrix.length; i++) {

            let index1 = j;

            let index2 = k;

            arrOfIn.push([index1, index2]);

            j++;

            k--;

        }

        return arrOfIn;

    }


    function sumOfDiagonals() {

        let matrix = matrixCreation(arr);

        let sumOne = 0;

        let sumTwo = 0;

        let j = 0;

        let k = matrix[0].length - 1;

        for (let i = 0; i < matrix.length; i++) {

            sumOne += matrix[i][j];

            sumTwo += matrix[i][k];

            j++;

            k--;

        }

        return [sumOne, sumTwo];

    }


    function changeValues() {

        let matrix = matrixCreation(arr);

        let arrOfIn = indexGathering();

        let num = sumOfDiagonals()[0];


        for (let i = 0; i < matrix.length; i++) {

            let curArr = arrOfIn[i];

            for (let j = 0; j < matrix[i].length; j++) {

                if (!curArr.includes(j)) {

                    matrix[i][j] = num;

                }

            }

        }

        return matrix;

    }



    function printing() {

        let arrOfSums = sumOfDiagonals();

        let matrix = matrixCreation(arr);

        let matrix2 = changeValues();

        if (arrOfSums[0] === arrOfSums[1]) {

            for (let el of matrix2) {

                console.log(el.join(' '));

            }

        } else {

            for (let el of matrix) {

                console.log(el.join(' '));

            }

        }

    }



    printing();

}