Compilare: main.cpp: In function 'int main()': main.cpp:178:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 178 | for(i = 0; i < emptyLeft.size() && i < emptyRight.size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:178:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 178 | for(i = 0; i < emptyLeft.size() && i < emptyRight.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:182:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 182 | while(i < emptyRight.size()) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:190:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 190 | while(i < emptyLeft.size()) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:172:43: warning: 'lastInCycle' may be used uninitialized in this function [-Wmaybe-uninitialized] 172 | ans.emplace_back(refNode[l[lastInCycle]], refNode[firstInCycle]); | ~~~~~~~~~~~~~^