Compilare: main.cpp: In function 'int main()': main.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<s.size(); ++i) ~^~~~~~~~~ main.cpp:27:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i + manacher[i] + 1 < s.size() and i - manacher[i] - 1 >=1 and s[i+manacher[i]+1]== s[i - manacher[i]-1]) ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:35:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i+manacher[i]+1 < s.size() and i-manacher[i]-1>=1 and s[i+manacher[i]+1]== s[i-manacher[i]-1]) ~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:41:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<s.size(); ++i) ~^~~~~~~~~