Compilare: main.cpp: In function 'int main()': main.cpp:53:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = a.size(); i < b.size(); i++) ~~^~~~~~~~~~ main.cpp:54:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(zf[i] >= a.size())sol.push_back(i - a.size()); ~~~~~~^~~~~~~~~~~