import java.io.*; import java.util.*; import java.text.*; import java.math.*; import java.util.regex.*; public class Solution { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n = in.nextInt(); int m = in.nextInt(); int k = in.nextInt(); for(int a0 = 0; a0 < n; a0++){ String row = in.next(); // Write Your Code Here } for(int a0 = 0; a0 < k; a0++){ int i1 = in.nextInt(); int j1 = in.nextInt(); int i2 = in.nextInt(); int j2 = in.nextInt(); // Write Your Code Here } System.out.print(0.25); // Write Your Code Here } }