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- #include "bits/stdc++.h"
- using namespace std;
- int a[20];
- int b[20];
- int main(){
- int n;cin>>n;
- for(int i=0;i<n;i++)cin>>a[i];
- for(int i=0;i<n;i++)cin>>b[i];
- sort(a,a+n);
- sort(b,b+n);
- int ans=1;
- for(int i=n-1;i>=0;i--){
- int count=0;
- for(int j=0;j<n;j++)
- if(b[j]>=a[i])count++;
- ans*=(count-(n-1-i));
- }
- cout<<ans<<endl;
- }
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