Compilare: main.cpp: In function 'bool comp(char, char)': main.cpp:52:29: warning: array subscript has type 'char' [-Wchar-subscripts] for(int idx=1;idx<=rem[b];idx++) ^ main.cpp:56:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] return (ask(aux)==aux.size()); ~~~~~~~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:76:15: warning: array subscript has type 'char' [-Wchar-subscripts] rem[ch]=ask(s); ^ main.cpp:98:17: warning: array subscript has type 'char' [-Wchar-subscripts] rem[v[1]]--; ^ main.cpp:102:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1;i<nr;i++) ^~~ main.cpp:106:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' nr--; ^~ main.cpp:108:18: warning: array subscript has type 'char' [-Wchar-subscripts] if(rem[ch]) ^ main.cpp:134:9: warning: unused variable 'ok' [-Wunused-variable] int ok=ask(pref); ^~