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Mar 6th, 2022
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  1. #include "bits/stdc++.h"
  2.  
  3. using namespace std;
  4.  
  5. int a[20];
  6. int b[20];
  7. int main(){
  8. int n;cin>>n;
  9. for(int i=0;i<n;i++)cin>>a[i];
  10. for(int i=0;i<n;i++)cin>>b[i];
  11. sort(a,a+n);
  12. sort(b,b+n);
  13. int ans=1;
  14. for(int i=n-1;i>=0;i--){
  15. int count=0;
  16. for(int j=0;j<n;j++)
  17. if(b[j]>=a[i])count++;
  18. ans*=(count-(n-1-i));
  19. }
  20. cout<<ans<<endl;
  21. }
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