Compilare: main.cpp: In function 'int32_t main()': main.cpp:31:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<s.size(); i++){ ~^~~~~~~~~ main.cpp:34:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i-k >= 0 and i+k < s.size() and s[i-k] == s[i+k]) ~~~~^~~~~~~~~~ main.cpp:45:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<s.size(); i++){ ~^~~~~~~~~ main.cpp:33:46: warning: 'left' may be used uninitialized in this function [-Wmaybe-uninitialized] if(right >= i) k = std::min(lps[left + right - i], right - i + 1); ~~~~~^~~~~~~