Compilare: main.cpp: In function 'int32_t main()': main.cpp:35:10: warning: array subscript has type 'char' [-Wchar-subscripts] ord[c]=o0; ^ main.cpp:39:10: warning: array subscript has type 'char' [-Wchar-subscripts] ord[c]=o0; ^ main.cpp:43:10: warning: array subscript has type 'char' [-Wchar-subscripts] ord[c]=o0; ^ main.cpp:49:23: warning: array subscript has type 'char' [-Wchar-subscripts] hb+=(pw*(ord[b[i] ]-ord['a']+1))%MOD; hb%=MOD; ^ main.cpp:56:24: warning: array subscript has type 'char' [-Wchar-subscripts] h2+=(pw2*(ord[a[i] ]-ord['a']+1))%MOD; h2%=MOD; ^ main.cpp:65:26: warning: array subscript has type 'char' [-Wchar-subscripts] h2-=(pw1*(ord[a[i-m] ]-ord['a']+1))%MOD; h2+=MOD; h2+=(pw2*(ord[a[i] ]-ord['a']+1))%MOD; h2%=MOD; ^ main.cpp:65:74: warning: array subscript has type 'char' [-Wchar-subscripts] h2-=(pw1*(ord[a[i-m] ]-ord['a']+1))%MOD; h2+=MOD; h2+=(pw2*(ord[a[i] ]-ord['a']+1))%MOD; h2%=MOD; ^ main.cpp:72:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<pos.size(); i++){ ~^~~~~~~~~~~