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  1. #include <iostream>
  2. #include <set>
  3. #include <algorithm>
  4. #include <iterator>
  5. #include <fstream>
  6.  
  7. using namespace std;
  8.  
  9. void readSet(set<int>& v, istream_iterator<int>& input) {
  10.     int size = *input++;
  11.     while (size--) {
  12.         v.insert(*input++);
  13.     }
  14. }
  15.  
  16. int main() {
  17.     istream_iterator<int> input(cin);
  18.     set<int> a, b;
  19.     readSet(a, input);
  20.     readSet(b, input);
  21.  
  22.     set<int> intersection;
  23.     set_intersection(
  24.         a.begin(), a.end(),
  25.         b.begin(), b.end(),
  26.         inserter(intersection, intersection.end())
  27.     );
  28.  
  29.     cout << "Ilosc powtarzajacych sie: " << intersection.size() << "\n";
  30.     cout << "Liczby:\n";
  31.     copy(
  32.         intersection.begin(),
  33.         intersection.end(),
  34.         ostream_iterator<int>(cout, "\n")
  35.     );
  36.     return 0;
  37. }
Success #stdin #stdout 0s 3036KB
comments (?)
stdin
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4

11 22 33 44

3

11 222 22
stdout
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Ilosc powtarzajacych sie: 2
Liczby:
11
22
https://ideone.com/icDYxO
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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