Compilare: main.cpp: In function 'int union_find(int, int)': main.cpp:33:1: warning: no return statement in function returning non-void [-Wreturn-type] 33 | } | ^ main.cpp: In function 'int main()': main.cpp:37:29: warning: unused variable 't' [-Wunused-variable] 37 | long long int n,m,i,j,k,t,q,nr,p; | ^ main.cpp:37:31: warning: unused variable 'q' [-Wunused-variable] 37 | long long int n,m,i,j,k,t,q,nr,p; | ^ main.cpp:37:33: warning: unused variable 'nr' [-Wunused-variable] 37 | long long int n,m,i,j,k,t,q,nr,p; | ^~ main.cpp:37:36: warning: unused variable 'p' [-Wunused-variable] 37 | long long int n,m,i,j,k,t,q,nr,p; | ^