Compilare: user.cpp: In function ‘int main()’: user.cpp:35:18: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>>a[i]+1; ^ user.cpp:88:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int w = 0; w < p[t].size(); w++) ^ user.cpp:89:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] q[ p[ t ][w].c ].push_back( p[t][w] ); ^ user.cpp:93:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int w = 0; w < q[t].size(); w++) ^