fork download
copy 
  1. #include<bits/stdc++.h>
  2. #define IO ios_base::sync_with_stdio(),cin.tie(0),cout.tie(0) ;
  3. #define ll long long
  4. using namespace std;
  5. const int N = 2e5 + 4 ;
  6. int n , k , l , r , q ;
  7. ll pre[N] , good[N] ;
  8. int main() {
  9.     IO ;
  10.     cin>>n>>k>>q ;
  11.     for(int i=1 ; i <= n ; i++)
  12.     {
  13.         cin>>l>>r ;
  14.         pre[l]++ ;
  15.         pre[r+1]-- ;
  16.     }
  17.     for(int i = 1 ; i <= 200000 ; i++)
  18.     {
  19.         pre[i] += pre[i-1] ;
  20.         if(pre[i] >= k)
  21.             good[i] = 1 ;
  22.     }
  23.     for(int i = 1 ; i <= 200000 ; i++)
  24.         good[i] += good[i-1] ;
  25.     while (q--)
  26.     {
  27.         cin>>l>>r ;
  28.         cout<<good[r] - good[l-1]<<'\n' ;
  29.     }
  30.  
  31.     return 0;
  32. }
Success #stdin #stdout 0.01s 6676KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/a8eYnm
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!