题解

#include<iostream>
#include<cstdio>
using namespace std;
int n,a,b,c;
int main(){
    cin>>n;
    a+=n%10;n/=10;
    a+=n%10*10;n/=10;
    a+=n%10*100;n/=10;
    b+=n%10;n/=10;
    b+=n%10*10;n/=10;
    b+=n%10*100;n/=10;
    c+=n%10;n/=10;
    c+=n%10*10;n/=10;
    c+=n%10*100;n/=10;
    cout<<a*b*c;
}