Compilare: main.cpp: In function 'int dfs(int)': main.cpp:30:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for (int i = 0; i < graf[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void calc(int)': main.cpp:52:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (int i = 0; i < graf[prec].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~