Compilare: main.cpp: In function 'int main()': main.cpp:29:22: warning: array subscript has type 'char' [-Wchar-subscripts] 29 | b[a[a.length()-1]].push_back((t<<32)+i),push_heap(b[a[a.length()-1]].begin(),b[a[a.length()-1]].end()); | ^ main.cpp:29:72: warning: array subscript has type 'char' [-Wchar-subscripts] 29 | b[a[a.length()-1]].push_back((t<<32)+i),push_heap(b[a[a.length()-1]].begin(),b[a[a.length()-1]].end()); | ^ main.cpp:29:99: warning: array subscript has type 'char' [-Wchar-subscripts] 29 | b[a[a.length()-1]].push_back((t<<32)+i),push_heap(b[a[a.length()-1]].begin(),b[a[a.length()-1]].end()); | ^