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- #include <iostream>
- int main(){
- unsigned long n;
- std::cin>> n;
- unsigned long a[n], d[n], i=0, j=0, v=0;
- for(i=0; i<n; i++){
- std::cin>> a[i];
- std::cin>> d[i];
- }
- for(i=0; i<n; i++){
- for(j=0; j<n; j++){
- if(a[i]<d[j]){
- if(a[i]>a[j])
- v++;
- }
- }
- }
- std::cout<<(v+n)*2;
- }
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