Compilare: main.cpp: In function 'int main()': main.cpp:17:29: warning: array subscript has type 'char' [-Wchar-subscripts] d[i-1][i]=a[ s[i-1] ][ s[i] ]; ^ main.cpp:17:37: warning: array subscript has type 'char' [-Wchar-subscripts] d[i-1][i]=a[ s[i-1] ][ s[i] ]; ^ main.cpp:23:49: warning: array subscript has type 'char' [-Wchar-subscripts] d[st][dr]=min(d[st][dr], a[s[st]][s[j]] + d[st+1][j-1]+ d[j+1][dr]); ^ main.cpp:23:55: warning: array subscript has type 'char' [-Wchar-subscripts] d[st][dr]=min(d[st][dr], a[s[st]][s[j]] + d[st+1][j-1]+ d[j+1][dr]); ^