Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:75:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for(int i=0;i<muchii[nod].size();i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp:108:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 108 | for(int i=0;i<muchii[nod].size();i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp:110:19: warning: variable 'b' set but not used [-Wunused-but-set-variable] 110 | int a,b; | ^ main.cpp: In function 'void makesol(int)': main.cpp:145:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 145 | for(int i=0;i<muchii[nod].size();i++) | ~^~~~~~~~~~~~~~~~~~~