Compilare: user.cpp: In function ‘void constr()’: user.cpp:56:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(B[TR(i+dx[T],j+dy[T])]||(j+dy[T]>n||i+dx[T]>n||j+dy[T]<0)) ^ user.cpp: In function ‘int main()’: user.cpp:106:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=k;DIV[k].ff==DIV[j].ff&&j<DIV.size();j++); ^ user.cpp:122:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=k;DIV[k].ff==DIV[j].ff&&j<DIV.size();j++); ^