Compilare: main.cpp: In function 'int main()': main.cpp:17:27: warning: array subscript has type 'char' [-Wchar-subscripts] d[i][i+1]=a[ s[i] ][ s[i+1] ]; ^ main.cpp:17:37: warning: array subscript has type 'char' [-Wchar-subscripts] d[i][i+1]=a[ s[i] ][ s[i+1] ]; ^ main.cpp:24:75: warning: array subscript has type 'char' [-Wchar-subscripts] d[i][j] = min(d[i][j], d[i+1][k-1] + d[k + 1][j] + a[s[i] ][s[k] ]); ^ main.cpp:24:82: warning: array subscript has type 'char' [-Wchar-subscripts] d[i][j] = min(d[i][j], d[i+1][k-1] + d[k + 1][j] + a[s[i] ][s[k] ]); ^