Compilare: main.cpp: In function 'bool solve()': main.cpp:93:21: warning: array subscript has type 'char' [-Wchar-subscripts] 93 | rez=f[s[poz]]; | ^ main.cpp: In function 'int main()': main.cpp:112:11: warning: array subscript has type 'char' [-Wchar-subscripts] 112 | f[x]=!f[x]; | ^ main.cpp:112:17: warning: array subscript has type 'char' [-Wchar-subscripts] 112 | f[x]=!f[x]; | ^