Compilare: user.cpp: In function ‘int solve1()’: user.cpp:21:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < s[i].size(); j++, pr *= 26) ^ user.cpp:22:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] h += poz[s[i][j]] * (s[i][j] - 'a'); ^ user.cpp: In function ‘int main()’: user.cpp:36:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < S.size(); i++) poz[S[i]] = i; ^ user.cpp:36:48: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (int i = 0; i < S.size(); i++) poz[S[i]] = i; ^