Compilare: main.cpp: In function 'void dfs1(int)': main.cpp:38:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (int i=0;i<g[x].v.size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:51:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (int i=0;i<g2[x].v.size();++i) | ~^~~~~~~~~~~~~~~