Compilare: main.cpp: In function 'int main()': main.cpp:176:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); i++) { ~~^~~~~~~~~~ main.cpp:185:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < s2.size(); j++) ~~^~~~~~~~~~~ main.cpp:213:14: warning: variable 'res' set but not used [-Wunused-but-set-variable] Hash res = base.extract(pos - word[id].l + 1, pos); ^~~