Compilare: main.cpp: In function 'int Union(int, int)': main.cpp:68:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:104:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=m;i++) ^~~ main.cpp:106:8: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(int i=1;i<=n;i++) ^~~