Compilare: main.cpp: In function 'void Read()': main.cpp:21:9: warning: unused variable 'i' [-Wunused-variable] int i,X,Y; ^ main.cpp: In function 'void Solve()': main.cpp:96:9: warning: unused variable 'i' [-Wunused-variable] int i,j,k,Node; ^ main.cpp:96:11: warning: unused variable 'j' [-Wunused-variable] int i,j,k,Node; ^ main.cpp: In function 'void Read()': main.cpp:22:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&N,&M); ^ main.cpp:26:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&X,&Y); ^ main.cpp: In function 'int SearchNode()': main.cpp:70:12: warning: 'Node' may be used uninitialized in this function [-Wmaybe-uninitialized] return Node; ^~~~ main.cpp: In function 'void Unific(int)': main.cpp:89:41: warning: 'comp2' may be used uninitialized in this function [-Wmaybe-uninitialized] ++added[nod],++added[Node],uc[comp2]=1; ~~~~~~~~~^~ main.cpp:90:19: warning: 'nod' may be used uninitialized in this function [-Wmaybe-uninitialized] MaxExtra=Maxim(MaxExtra,Maxim(added[nod],added[Node])); ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~