Compilare: user.cpp: In function ‘int main()’: user.cpp:18:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < t.size();i++) ^ user.cpp:20:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i < s.size(); i++) ^ user.cpp:24:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(l[i] + 1 + i < s.size() && i - l[i] - 1 >= 0 && s[ l[i] + i + 1 ] == s[ i - l[i] - 1 ]) ^