Compilare: user.cpp: In function ‘int cmmmc(int, int)’: user.cpp:13:8: warning: unused variable ‘i’ [-Wunused-variable] { int i,x=a,y=b,c; ^ user.cpp: In function ‘void ST()’: user.cpp:29:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v2[x].size();i++) ^ user.cpp:34:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vt[x].size();i++) ^ user.cpp:24:12: warning: unused variable ‘y’ [-Wunused-variable] { int i,x,y,res=1; num=0; ^ user.cpp:24:14: warning: unused variable ‘res’ [-Wunused-variable] { int i,x,y,res=1; num=0; ^ user.cpp: In function ‘int main()’: user.cpp:72:13: warning: ‘nod’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<val[nod]<<"\n"; ^