Compilare: main.cpp: In function 'void dfs(long long int, long long int)': main.cpp:63:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for(int i = 0; i != g[fiu].size(); i ++) | ~~^~~~~~~~~~~~~~~~ main.cpp:79:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | if(i == g[fiu].size() - 1) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:89:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for(int i = 0; i != g[fiu].size(); i ++) | ~~^~~~~~~~~~~~~~~~ main.cpp:99:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 99 | if(i == g[fiu].size() - 1) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:111:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 111 | for(int i = 0; i != g[fiu].size(); i ++) | ~~^~~~~~~~~~~~~~~~