Compilare: main.cpp: In function 'void prim(int)': main.cpp:34:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int j = 0; j < vecini[u].size(); j++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:39:20: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 39 | if (d[v] < cost && vizitat[v] == 0 || d[v] == 100000)