Compilare: main.cpp: In function 'void dfs1(int)': main.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for ( i = 0; i < G1[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp:14:11: warning: unused variable 'j' [-Wunused-variable] 14 | int i,j; | ^ main.cpp: In function 'void dfs2(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 ( i = 0; i < G2[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:64:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for (j = 0; j < com[i].size(); j++) | ~~^~~~~~~~~~~~~~~