molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:8:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | for (int i = 0;i < w.size();i ++) {
| ~~^~~~~~~~~~
molecules.cpp:13:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
13 | while (lo < v.size()) {
| ~~~^~~~~~~~~~
molecules.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
14 | if (hi + 1 < v.size() && sum < l) {
| ~~~~~~~^~~~~~~~~~