Compilare: main.cpp: In function 'int main()': main.cpp:11:27: warning: array subscript has type 'char' [-Wchar-subscripts] 11 | for(auto it : a) ++Nr[it]; | ^~ main.cpp:12:27: warning: array subscript has type 'char' [-Wchar-subscripts] 12 | for(auto it : b) --Nr[it], ++R[it]; | ^~ main.cpp:12:36: warning: array subscript has type 'char' [-Wchar-subscripts] 12 | for(auto it : b) --Nr[it], ++R[it]; | ^~ main.cpp:15:15: warning: array subscript has type 'char' [-Wchar-subscripts] 15 | if(Nr[it] < 0){ | ^~ main.cpp:20:15: warning: array subscript has type 'char' [-Wchar-subscripts] 20 | if(!R[it]) continue; | ^~ main.cpp:21:61: warning: array subscript has type 'char' [-Wchar-subscripts] 21 | while(!Par.empty() && Par.back() > it && Nr[Par.back()]) { | ~~~~~~~~^~ main.cpp:22:26: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | --Nr[Par.back()]; | ~~~~~~~~^~ main.cpp:23:25: warning: array subscript has type 'char' [-Wchar-subscripts] 23 | ++R[Par.back()]; | ~~~~~~~~^~ main.cpp:27:13: warning: array subscript has type 'char' [-Wchar-subscripts] 27 | --R[it]; | ^~