coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:6:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
6 | for (int i = 0; i < b.size(); i++)
| ~~^~~~~~~~~~
coins.cpp:10:21: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
10 | if (cur ^ i == c)
| ~~^~~~
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
20 | for (int i = 0; i < b.size(); i++)
| ~~^~~~~~~~~~