Compilare: main.cpp: In function 'int main()': main.cpp:179:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 179 | for(i = 0; i < emptyLeft.size() && i < emptyRight.size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:179:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 179 | for(i = 0; i < emptyLeft.size() && i < emptyRight.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:183:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 183 | while(i < emptyRight.size()) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:191:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 191 | while(i < emptyLeft.size()) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:173:47: warning: 'lastInCycle' may be used uninitialized in this function [-Wmaybe-uninitialized] 173 | ans.emplace_back(refNode[l[lastInCycle]], refNode[firstInCycle]); | ~~~~~~~~~~~~~^