int[][][] magicSquares = {
            {{8, 1, 6}, {3, 5, 7}, {4, 9, 2}},
            {{6, 1, 8}, {7, 5, 3}, {2, 9, 4}},
            {{4, 9, 2}, {3, 5, 7}, {8, 1, 6}},
            {{2, 9, 4}, {7, 5, 3}, {6, 1, 8}},
            {{8, 3, 4}, {1, 5, 9}, {6, 7, 2}},
            {{4, 3, 8}, {9, 5, 1}, {2, 7, 6}},
            {{6, 7, 2}, {1, 5, 9}, {8, 3, 4}},
            {{2, 7, 6}, {9, 5, 1}, {4, 3, 8}}
        };
        
        int minCost = Integer.MAX_VALUE;
        for (int[][] magicSquare : magicSquares) {
            int cost = 0;
            for (int i = 0; i < 3; i++) {
                for (int j = 0; j < 3; j++) {
                    cost += Math.abs(s.get(i).get(j) - magicSquare[i][j]);
                }
            }
            minCost = Math.min(minCost, cost);
        }
        
        return minCost;
    }