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  1. #include <bits/stdc++.h>
  2. #define endl "\n"
  3. using namespace std;
  4. typedef long long ll;
  5. const int mod = 1e9 + 7;
  6.  
  7. class PhanSo{
  8. 	private:
  9. 		ll tu, mau;
  10. 	public:
  11. 		PhanSo(ll tu, ll mau);
  12. 		friend istream& operator >> (istream& in, PhanSo& x);
  13. 		friend ostream& operator << (ostream& out, PhanSo x);
  14. 		friend PhanSo operator + (PhanSo a, PhanSo b);
  15. };
  16.  
  17. PhanSo::PhanSo(ll tu, ll mau){
  18. 	this->tu = tu;
  19. 	this->mau = mau;
  20. }
  21.  
  22. istream& operator >> (istream& in, PhanSo& x){
  23. 	in >> x.tu >> x.mau;
  24. 	return in;
  25. }
  26.  
  27. ostream& operator << (ostream& out, PhanSo x){
  28. 	out << x.tu << "/" << x.mau;
  29. 	return out;
  30. }
  31.  
  32. PhanSo operator + (PhanSo a, PhanSo b){
  33. 	PhanSo t(1,1);
  34. 	ll mau_chung = a.mau * b.mau;
  35. 	ll tu_chung = a.tu * b.mau + a.mau * b.tu;
  36. 	ll gcd = __gcd(mau_chung, tu_chung);
  37. 	t.tu = tu_chung / gcd;
  38. 	t.mau = mau_chung / gcd;
  39. 	return t;
  40. }
  41.  
  42. int main() {
  43. 	PhanSo p(1,1), q(1,1);
  44. 	cin >> p >> q;
  45. 	cout << p + q;
  46. 	return 0;
  47. }
Success #stdin #stdout 0.01s 5268KB
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https://ideone.com/u9b7Mn
language:
C++ (gcc 8.3)
created:
5 days ago
visibility:
public

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