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Mar 6th, 2022
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C++ 0.30 KB | None | 0 0
  1. int a[20];
  2. int b[20];
  3. int main(){
  4.     int n;cin>>n;
  5.     for(int i=0;i<n;i++)cin>>a[i];
  6.     for(int i=0;i<n;i++)cin>>b[i];
  7.     sort(a,a+n);
  8.     sort(b,b+n);
  9.     long long ans=1;
  10.     for(int i=n-1;i>=0;i--){
  11.         int count=0;
  12.         for(int j=0;j<n;j++)
  13.             if(b[j]>=a[i])count++;
  14.         ans*=(count-(n-1-i));
  15.     }
  16.     cout<<ans<<endl;
  17. }
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