Compilare: main.cpp: In function 'int prim(int)': main.cpp:24:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int f = 0 ; f < m[nod].size() ; f ++) | ~~^~~~~~~~~~~~~~~ main.cpp:43:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(int f = 0 ; f < m[nod].size() ; f ++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int f = 0 ; f < muchii.size() ; f ++) | ~~^~~~~~~~~~~~~~~