Compilare: user.cpp: In function ‘void read()’: user.cpp:31:21: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> s[i] + 1, len[i] = strlen(s[i] + 1); ^ user.cpp: In function ‘int main()’: user.cpp:132:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < ans.size(); ++i) ^