Compilare: main.cpp: In function 'int main()': main.cpp:15:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1, left = 0, right = 0; i < s.length(); ++i) { ~~^~~~~~~~~~~~ main.cpp:18:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (right < s.length() && s[right] == s[right - left]) ~~~~~~^~~~~~~~~~~~ main.cpp:29:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (right < s.length() && s[right] == s[right - left]) ~~~~~~^~~~~~~~~~~~ main.cpp:38:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = szS; i < s.length(); ++i) { ~~^~~~~~~~~~~~