Compilare: main.cpp: In function 'int main()': main.cpp:119:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;i++) ^~~ main.cpp:121:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(int i=1;i<=nr;i++) ^~~ main.cpp: In function 'void dfs(int)': main.cpp:40:19: warning: 'z' may be used uninitialized in this function [-Wmaybe-uninitialized] if(i!=pr[0][nod]&&i!=z) ~~~~~~~~~~~~~^~~~~~