Compilare: main.cpp: In function 'bool eval()': main.cpp:61:25: warning: array subscript has type 'char' [-Wchar-subscripts] rez = val[s[ind]]; ^ main.cpp: In function 'void solve()': main.cpp:71:23: warning: array subscript has type 'char' [-Wchar-subscripts] val[modific[i]] = !val[modific[i]]; ^ main.cpp:71:42: warning: array subscript has type 'char' [-Wchar-subscripts] val[modific[i]] = !val[modific[i]]; ^