Compilare: main.cpp: In function 'int exista_drum_crestere()': main.cpp:41:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int i = 0; i< graf[nod].size(); i++) | ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void update()': main.cpp:89:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for (i = 0; i < graf[ult_nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:130:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for (i = 0; i< drumuri_minime.size(); i++) | ~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:98:11: warning: unused variable 'j' [-Wunused-variable] 98 | int i,j, t1, t2; | ^