【求助】怎么用枚举法写这道题啊！

#include<iostream>
using namespace std;
int main()
{
    int o=0,t=0,h=0,sum;
    for(t=1;t<10;t++)
        for(h=t+1;h<10;h++)
            for(o=h+1;o<10;o++)
            {
                sum=o+t+h;
                if(sum==o*t*h)
                {
                    cout<<o+10*t+100*h;return 0;
                }
            }
    cout<<"No number can fulfill the requirement.";
    return 0;
}