Compilare: user.cpp: In function ‘std::vector<int> KMP(std::string, std::string)’: user.cpp:55:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= K.size(); i++) { ^ user.cpp:63:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(sp < S.size()) { ^ user.cpp:64:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(kp != -1 && (kp == K.size() || K[kp] != S[sp])) kp = T[kp]; ^ user.cpp:67:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(kp == K.size()) matches.push_back(sp - K.size()); ^ user.cpp: In function ‘bool isOkay(std::vector<int>, std::string)’: user.cpp:76:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (matches[i] - matches[i-1] != seek.length()) { ^