Compilare: main.cpp: In function 'void dfs(int)': main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void idfs(int)': main.cpp:33:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:47:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int j=1;j<=n;j++) ^~~ main.cpp:55:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' ok=1; ^~