新手专用题解(超简单)

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    int b=n%1000;
    n=n/1000;
    int c=n%1000;
    n=n/1000;
    int d=n%1000;
    cout<<b*c*d;
}