Compilare: main.cpp: In function 'int main()': main.cpp:86:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 86 | for(int i=0; i<cuplaj.size(); i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'bool dfs_cuplaj(int)': main.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type] 42 | } | ^