using System;

using System.Collections.Generic;

public class Program

{

    public class Point {

        public int Row;

        public int Col;

        public Point(int row, int col) { Row = row; Col = col; }

    }

    public static int GetSpecialItems(int[][] matrix) {

        int rows = matrix.Length;

        int cols = matrix[0].Length;

        var rowDict = new Dictionary<int, int>();

        var colDict = new Dictionary<int, int>();

        var points = new List<Point>();

        for (int i = 0; i < rows; i++)

        {

            for (int j = 0; j < cols; j++)

            {

                if (matrix[i][j] == 1)

                {

                    if (!rowDict.ContainsKey(i))

                        rowDict[i] = 0;

                    rowDict[i]++;

                    if (!colDict.ContainsKey(j))

                        colDict[j] = 0;

                    colDict[j]++;

                    points.Add(new Point(i, j));

                }

            }

        }

        int res = 0;

        foreach (Point p in points)

        {

            if (rowDict[p.Row] == 1 && colDict[p.Col] == 1)

                res++;

        }

        return res;

    }

    public static void Main()

    {

        Console.WriteLine("UniLecs");

        // tests

        var matrix = new int[][] {

            new int[] { 1, 0, 0 },

            new int[] { 0, 0, 1 },

            new int[] { 1, 0, 0 }

        };

        Console.WriteLine(GetSpecialItems(matrix).ToString()); // 1

    }

}