#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
int main(){
    ifstream ifs ("data.txt");
    int num;
    vector <int> vec;
    while(ifs >> num){
        vec.push_back(num);
    }
    ofstream fout ("product.txt");
    for(int i = 0; i < vec.size(); i++){
        if(vec[i] % 2 == 0){
            int fnum = vec[i]/100;
            int snum = vec[i]%10;
            int tnum = (vec[i]/10)%10;
            vec[i] = fnum*snum*tnum;
            fout << vec[i] << endl;
        }else{
            fout << vec[i] << endl;
        }
    }
}