Compilare: main.cpp: In function 'int main()': main.cpp:55:17: warning: unused variable 'cnt' [-Wunused-variable] int cnt = 0; ^~~ main.cpp:63:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (y == pattern.size()) { ~~^~~~~~~~~~~~~~~~~ main.cpp:79:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (y == pattern.size() && cnt < 1000) { ~~^~~~~~~~~~~~~~~~~