Compilare: main.cpp: In function 'void rabin_karp(const string&, const string&)': main.cpp:49:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= a.size(); i++) pow *= base; ~~^~~~~~~~~~~ main.cpp:51:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= b.size(); i++) { ~~^~~~~~~~~~~ main.cpp:55:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i < a.size()) continue; ~~^~~~~~~~~~