Compilare: main.cpp: In function 'int main()': main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < s.size(); i ++) { ~~^~~~~~~~~~ main.cpp:25:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j + i < s.size() && s[j] == s[j + i]) ~~~~~~^~~~~~~~~~ main.cpp:35:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j + z[pretender] + i < s.size() && s[j + z[pretender] + 1] == s[j + i + z[pretender]]) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:44:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(z[i] >= target.size()) {