Compilare: main.cpp: In function 'void read()': main.cpp:25:9: warning: unused variable 'k' [-Wunused-variable] int k,l; ^ main.cpp:25:11: warning: unused variable 'l' [-Wunused-variable] int k,l; ^ main.cpp: In function 'void unire(int, int)': main.cpp:45:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(p[x]>p[y]) ^~ main.cpp:47:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(p[x]==p[y]) ^~