Compilare: main.cpp: In function 'int main()': main.cpp:33:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] fin>>s+1; ~^~ main.cpp:49:46: warning: array subscript has type 'char' [-Wchar-subscripts] D[i][j] = min(D[i][j], a[s[i]][s[k]] + D[i+1][k-1] + D[k+1][j] ); ^ main.cpp:49:52: warning: array subscript has type 'char' [-Wchar-subscripts] D[i][j] = min(D[i][j], a[s[i]][s[k]] + D[i+1][k-1] + D[k+1][j] ); ^