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  1.  
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4.  
  5. vector<long long> f(55);
  6. void prepare() {
  7.     f[1] = 1;
  8.     for (int i = 2; i < f.size(); ++i) {
  9.         f[i] = f[i - 1] * 2;
  10.     }
  11. }
  12.  
  13. void testCase() {
  14.     long long n, k;
  15.     cin >> n >> k;
  16.     for (int i = n; i >= 1; --i) {
  17.         if (k > f[i]) k -= f[i];
  18.         else if (k == f[i]) {
  19.             cout << i;
  20.             return;
  21.         }
  22.     }
  23. }
  24.  
  25. int main() {
  26.     ios_base::sync_with_stdio(false);
  27.     cin.tie(NULL); cout.tie(NULL);
  28.  
  29.     prepare();
  30.     int T = 1; cin >> T;
  31.     while (T--) {
  32.         testCase();
  33.         cout << "\n";
  34.     }
  35.     return 0;
  36. }
Success #stdin #stdout 0.01s 5292KB
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https://ideone.com/Aq4jWZ
language:
C++ (gcc 8.3)
created:
7 days ago
visibility:
public

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