Compilare: user.cpp: In function ‘int main()’: user.cpp:32:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( i = 0; i < A[k].size(); i++ ) ^ user.cpp:14:24: warning: unused variable ‘p’ [-Wunused-variable] int m, i, x, y, c, p, k, ciclu_negativ,z; ^ user.cpp:14:44: warning: variable ‘z’ set but not used [-Wunused-but-set-variable] int m, i, x, y, c, p, k, ciclu_negativ,z; ^