Compilare: main.cpp: In function 'int main()': main.cpp:99:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 99 | for (int i = start[nod]; i < graf[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:121:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 121 | for (int i = 0; i < sol.size()-1; i++) | ~~^~~~~~~~~~~~~~