Compilare: user.cpp: In function ‘int main()’: user.cpp:22:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); i++) ^ user.cpp:23:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] P[s[i]] = i+1; ^ user.cpp:50:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int K = 1; K <= s.size(); K++) { ^ user.cpp:60:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[i][j][P[M[i][j]]][0] = 0; ^ user.cpp:68:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int K = 1; K <= s.size(); K++) { ^ user.cpp:83:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int K = 1; K <= s.size(); K++) { ^