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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. bool get_bit(int n, int position) {
  5. 	return (n >> position)&1;
  6. }
  7.  
  8. void set_bit(int &n, int position, bool value) {
  9. 	if (value)
  10. 		n |= 1 << position;
  11. 	else
  12. 		n &= ~(1 << position);
  13. }
  14.  
  15. int main() {
  16. 	int l, r, a=0, b=0;
  17. 	cin >> l >> r;
  18. 	int k;
  19. 	for (k = 30; k >= 0; k--) {
  20. 		if (get_bit(l, k) == get_bit(r, k)) {
  21. 			set_bit(a, k, get_bit(l, k));
  22. 		} else break;
  23. 	}
  24. 	b = a;
  25. 	set_bit(a, k, 1);
  26. 	set_bit(b, k, 0);
  27. 	for (k--; k >= 0; k--) {
  28. 		set_bit(a, k, 0);
  29. 		set_bit(b, k, 1);
  30. 	}
  31. 	if (a > b)
  32. 		swap(a, b);
  33. 	cout << a << ' ' << b << endl;
  34. 	return 0;
  35. }
Success #stdin #stdout 0s 3344KB
comments (?)
stdin
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1 1000001
stdout
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524287 524288
https://ideone.com/Po4JgL
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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