Compilare: main.cpp: In function 'int main()': main.cpp:18:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 2; i < s.size(); ++i) { ~~^~~~~~~~~~ main.cpp:29:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = target.size() + 2; i < s.size(); ++i) { ~~^~~~~~~~~~ main.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (kmp[i] == target.size()) { ~~~~~~~^~~~~~~~~~~~~~~~