#include<iostream>
#include<bits/stdc++.h>
using namespace std;
int main()
{
for(int i=999 ; i>=100 ; i--)
{
int k=i ;
int product=i*k;
if( product==true)
{
cout<<product;
break;
}
else{
k=i-1;
product=i*k;
if(product==true){
cout<<product;
break;
}
}
}
return 0;}
I2luY2x1ZGU8aW9zdHJlYW0+CiNpbmNsdWRlPGJpdHMvc3RkYysrLmg+CnVzaW5nIG5hbWVzcGFjZSBzdGQ7CmludCBtYWluKCkKewogICBmb3IoaW50IGk9OTk5IDsgaT49MTAwIDsgaS0tKQogICB7CiAgICAgICBpbnQgaz1pIDsKICAgICAgIGludCBwcm9kdWN0PWkqazsKICAgICAgIGlmKCBwcm9kdWN0PT10cnVlKQogICAgICAgewogICAgICAgICAgIGNvdXQ8PHByb2R1Y3Q7CiAgICAgICAgICAgYnJlYWs7CiAgICAgICB9CiAgICAgICBlbHNlewogICAgICAgICAgIGs9aS0xOwogICAgICAgICAgIHByb2R1Y3Q9aSprOwogICAgICAgICAgIGlmKHByb2R1Y3Q9PXRydWUpewogICAgICAgICAgICAgICBjb3V0PDxwcm9kdWN0OwogICAgICAgICAgICAgICBicmVhazsKICAgICAgICAgICB9CiAgICAgICB9CiAgICAgICAKICAgfQogICByZXR1cm4gMDt9