Compilare: main.cpp: In function 'void dfs(int)': main.cpp:23:7: warning: statement has no effect [-Wunused-value] b[i]==cc; ~~~~^~~~ main.cpp: In function 'int main()': main.cpp:37:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=N;i++) ^~~ main.cpp:42:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' g<<cc; ^