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  1. #include <iostream>
  2. #include <bits/stdc++.h>
  3. #define Kirlos ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
  4. #define ll long long
  5. #define pb(k) push_back(k)
  6. #define fi first
  7. #define se second
  8. #define endl '\n'
  9. #define mp(x,y) make_pair(x,y)
  10. #define MOD 1000000007
  11. #define all(x) x.begin(), x.end()
  12. #define PI acos(-1)
  13. #define sin(x) sin((x)*PI/180)
  14. #define cos(x) cos((x)*PI/180)
  15. #define tan(x) tan((x)*PI/180)
  16. #define Ones(x) __builtin_popcountll(x)
  17.  
  18. using namespace std;
  19.  
  20. void solve()
  21. {
  22.     int n,k,q;
  23.     cin>>n>>k>>q;
  24.     vector<int>pre(200005);
  25.     while(n--)
  26.     {
  27.         int l,r;
  28.         cin>>l>>r;
  29.         pre[l]++;
  30.         pre[r+1]--;
  31.     }
  32.     for(int i=1; i<200005; i++)
  33.     {
  34.         pre[i]+=pre[i-1];
  35.     }
  36.     vector<int>freq(200005);
  37.     for(int i=1; i<200005; i++)
  38.     {
  39.         if(pre[i]>=k)
  40.         {
  41.             freq[i]=1;
  42.         }
  43.     }
  44.     for(int i=1; i<200005; i++)
  45.     {
  46.         freq[i]+=freq[i-1];
  47.     }
  48.     while(q--)
  49.     {
  50.         int l,r;
  51.         cin>>l>>r;
  52.         cout<<freq[r]-freq[l-1]<<endl;
  53.     }
  54. }
  55.  
  56. int main()
  57. {
  58.     Kirlos
  59.     ll t;
  60.     t=1;
  61.     //cin>>t;
  62.     while(t--)
  63.     {
  64.         solve();
  65.     }
  66.     return 0;
  67. }
Success #stdin #stdout 0.01s 5532KB
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https://ideone.com/vaN84L
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
secret

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