Compilare: user.cpp: In function ‘bool comp(int*)’: user.cpp:28:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(A[0]!=N.size()) return A[0]<N.size(); ^ user.cpp:28:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(A[0]!=N.size()) return A[0]<N.size(); ^ user.cpp: In function ‘int main()’: user.cpp:139:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(prod[0]+prod[0]-1>N.size()) break; ^ user.cpp:144:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(prod[0]+x[0]-1>N.size()) break; ^ user.cpp:150:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(prod[0]>N.size()) break; ^ user.cpp:134:17: warning: unused variable ‘p’ [-Wunused-variable] int p=1,ind=11; ^