Compilare: main.cpp: In function 'void dfs(int)': main.cpp:20:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int i=0; i<l[nod].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for(int i=0; i<comp.size(); i++) | ~^~~~~~~~~~~~ main.cpp:75:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for(int i=0; i<impar.size(); i+=2) | ~^~~~~~~~~~~~~ main.cpp:96:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(int i=0; i<nod_ciclu.size()-1; i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp:98:21: warning: unused variable 'aux' [-Wunused-variable] 98 | int aux=nod_ciclu[i]; | ^~~ main.cpp:116:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 116 | for(int i=1; i<=nod_ciclu.size()-1; i++) | ~^~~~~~~~~~~~~~~~~~~~ main.cpp:128:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 128 | for(int j=0; j<sol[i].size(); j++) | ~^~~~~~~~~~~~~~