import java.io.*;
import java.util.*;
public class For{
public int fact2 (int n) {
int total;
for (total = 1; n >= 1; n -= 1) {
total = total * n;
}
return total;
}
public String reverse(String word) {
int index, length = word.length();
String returnString = "";
for (index = 0; index < length; index += 1) {
returnString = word.substring(index,index + 1) + returnString;
}
return returnString;
}
public String table(int n,int m) {
String returnString = " ";
for (int i = 1; i <= n; i += 1){
returnString = returnString + i + " ";
}
returnString = returnString + "\n";
for (int i = 1; i <= m; i += 1){
returnString = returnString + "\n" + i + " ";
for (int j = 1; j <= n; j += 1){
returnString = returnString + i*j + " ";
}
}
return returnString;
}
}