using System;
using System.Collections.Generic;
using System.Linq;

namespace _10._JumpAround
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] input = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
            List<int> startPositions = Console.ReadLine().Split(' ').Select(int.Parse).ToList();
            List<int> matrixWithJumps = new List<int>();
            int[,] matrix = new int[input[0], input[1]];

            for (int i = 0; i < input[2]; i++)
            {
                var jumps = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();

                for (int j = 0; j < 2; j++)
                {
                    matrixWithJumps.Add(jumps[j]);
                }
            }
            int counter = 1;
            for (int k = 0; k < input[0]; k++)
            {

                for (int l = 0; l < input[1]; l++)
                {
                    matrix[k, l] += counter;
                    counter++;
                 }
            }

            int currentRowPosition = startPositions[0];
            int currentColPosition = startPositions[1];

            long sum = matrix[currentRowPosition, currentColPosition];
            matrix[currentRowPosition, currentColPosition] = 0;
            int jumpsNumber = 0;


            while ( true )
            {
                for (int i = 0; i < input[2]*2; i+=2)
                {
                    currentRowPosition += matrixWithJumps[i];
                    currentColPosition += matrixWithJumps[i + 1];

                    if (currentColPosition <= -1 || currentRowPosition <= -1 || currentRowPosition >= matrix.GetLength(0) || currentColPosition >= matrix.GetLength(1))
                    {
                        Console.WriteLine($"escaped {sum}");
                        return ;
                    }
                    if (matrix[currentRowPosition, currentColPosition] == 0)
                    {
                        Console.WriteLine($"caught {jumpsNumber}");
                        return;
                    }
                    jumpsNumber++;
                    sum += matrix[currentRowPosition, currentColPosition];
                }
            }

        }
    }
}