Compilare: main.cpp: In function 'void unire(int, int)': main.cpp:21:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(x!=y) ^ main.cpp: In function 'int main()': main.cpp:36:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;i++) ^~~ main.cpp:39:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(int i=1;i<=m;i++) ^~~