Compilare: user.cpp: In function ‘int main()’: user.cpp:55:45: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<m<<" "<<v[x].second<<" "<<v[y].second<<"\n"; ^ user.cpp:13:15: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (i=x+s;i<=n;i++) ^ user.cpp:32:9: note: ‘x’ was declared here int x,y; ^ user.cpp:17:8: warning: ‘len’ may be used uninitialized in this function [-Wmaybe-uninitialized] n=n-s; ^ user.cpp:31:12: note: ‘len’ was declared here int st,len; //len is for lenght ^