Compilare: main.cpp: In function 'int gaseste_nod_comun(int, int, int)': main.cpp:72:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int i = 0; i < t.size(); i++) | ~~^~~~~~~~~~ main.cpp:75:22: 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 < t.size(); i++) | ~~^~~~~~~~~~ main.cpp:78:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(int i = 0; i < t.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:138:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 138 | for(int i = 0; i < graf[u].size(); i++) | ~~^~~~~~~~~~~~~~~~