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  1. #include <iostream>
  2. using namespace std;
  3. int main()
  4. {
  5.     long long n,b;
  6.     cin >> n >> b;
  7.     if (n&(1<<b)!=0) cout << n-(1<<b);
  8.     else cout << n;
  9. }
Success #stdin #stdout 0s 4412KB
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https://ideone.com/twxIR3
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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