	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.InputStreamReader;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.Comparator;
	import java.util.HashMap;
	import java.util.HashSet;
	import java.util.LinkedList;
	import java.util.List;
	import java.util.Map;
	import java.util.PriorityQueue;
	import java.util.Queue;
	import java.util.Random;
	import java.util.Set;
	import java.util.Stack;
	
	public class test {
		public static void main(String[] args) throws InterruptedException {
			//new careercup().run();
			//new CC().run();
			//System.out.println(Integer.MAX_VALUE);
			try{
				BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
				br.readLine();
				System.out.println(25);
				
			}catch(IOException io){
				io.printStackTrace();
			}
		}
		
	
	}
