Compilare: main.cpp: In function 'void dfs(int)': main.cpp:53:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g[v].size(); i++) { ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:70:9: warning: unused variable 'n' [-Wunused-variable] int n, m; ^ main.cpp:72:23: warning: 'm' is used uninitialized in this function [-Wuninitialized] for (int i = 0; i < m; i++) { ~~^~~