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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int maxAND(long long int L, long long int R) 
  5. { 
  6.     if (L == R) 
  7.         return L; 
  8.     else if ((R - L) == 1) 
  9.         return (R & L); 
  10.     else { 
  11.         if (((R - 1) & R) > ((R - 2) & (R - 1))) 
  12.             return ((R - 1) & R); 
  13.         else
  14.             return ((R - 2) & (R - 1)); 
  15.     } 
  16. } 
  17.  
  18.  
  19. int main() {
  20. 	int t;
  21. 	scanf("%d",&t);
  22. 	while(t--) {
  23. 		long long int p,q;
  24. 		scanf("%llu%llu",&p,&q);
  25. 		printf("%d\n",maxAND(p,q));
  26. 	}
  27. }
Success #stdin #stdout 0s 4356KB
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https://ideone.com/cdQpu6
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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