Compilare: user.cpp: In function ‘int main()’: user.cpp:42:28: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] while(in >> words[pos] + 1) { ^ user.cpp:53:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] from[i] = MAX[words[i][words[i][0]] - 'a']; ^ user.cpp:54:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] DP[i] = 1 + DP[MAX[words[i][words[i][0]] - 'a']]; ^ user.cpp:40:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, mmax = -1, maxpos = -1; ^