Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:102:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | for (int i = 0;i < e[nod].size();i++) { | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int solve()': main.cpp:151:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 151 | for (int i = 0;i < e[poz[n]].size();i++) { | ~~^~~~~~~~~~~~~~~~~~