Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:49:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for( ; idx[acc] < G[acc].size(); idx[acc]++) | ~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:106:7: warning: unused variable 'ok' [-Wunused-variable] 106 | int ok = 0, nr_drumuri = 0; | ^~