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  1. #include <iostream>
  2. #include <set>
  3. using namespace std;
  4.  
  5. int main() {
  6.     set<int> a;
  7.     a.insert(1);
  8.     a.insert(5);
  9.     a.insert(6);
  10.     set<int>::iterator it = a.lower_bound(5);
  11.     if (it != a.begin()) {
  12.       it--;
  13.       cout << *it << endl;
  14.     }
  15.     return 0;
  16. }
Success #stdin #stdout 0s 3472KB
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https://ideone.com/u3VzUH
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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