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  1. #include <iostream>
  2. #include <map>
  3. #include <vector>
  4. #include <utility>
  5. #include <iterator>
  6.  
  7. int main() {
  8. 	std::map<int, bool> m{ {1, true}, {4, true}, {9, true} };
  9.  
  10. 	std::vector<bool> v(m.rbegin()->first + 1, false);
  11. 	for (auto& p : m) {
  12. 		v[p.first] = p.second;
  13. 	}
  14.  
  15. 	for (int i = 0; i != v.size(); ++i) {
  16. 		std::cout << "v[" << i <<"] = " << v[i] << std::endl;
  17. 	}
  18. }
Success #stdin #stdout 0s 3476KB
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stdin
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Standard input is empty
stdout
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v[0] = 0
v[1] = 1
v[2] = 0
v[3] = 0
v[4] = 1
v[5] = 0
v[6] = 0
v[7] = 0
v[8] = 0
v[9] = 1
https://ideone.com/5VQFmr
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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