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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. typedef long long ll;
  5.  
  6. vector<ll> p(1000005, 0);
  7.  
  8. int main() {
  9.     ll n, k;
  10.     cin >> n >> k;
  11.  
  12.     ll mx = 0;
  13.  
  14.     for(ll i = 1; i <= n; i++) {
  15.         ll l, r;
  16.         cin >> l >> r;
  17.  
  18.         mx = max(mx, r);
  19.  
  20.         p[l]++;
  21.         p[r + 1]--;
  22.     }
  23.  
  24.     for(ll i = 1; i <= mx + 1; i++)
  25.         p[i] += p[i - 1];
  26.  
  27.     for(ll i = 1; i <= mx + 1; i++)
  28.         p[i] = (p[i] >= k);
  29.  
  30.     for(ll i = 1; i <= mx + 1; i++)
  31.         p[i] += p[i - 1];
  32.  
  33.     ll q;
  34.     cin >> q;
  35.  
  36.     while(q--) {
  37.         ll x, y;
  38.         cin >> x >> y;
  39.  
  40.         cout << p[y] - p[x - 1] << '\n';
  41.     }
  42.  
  43.     return 0;
  44. }
Success #stdin #stdout 0.01s 10756KB
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https://ideone.com/7FEdwd
27
language:
C++ (gcc 8.3)
created:
14 days ago
visibility:
public

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