Compilare: main.cpp: In function 'int main()': main.cpp:17:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long i = 1; i < p.length();) ~~^~~~~~~~~~~~ main.cpp:33:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long i = 0; i < s.length();) ~~^~~~~~~~~~~~ main.cpp:49:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j == p.length()) ~~^~~~~~~~~~~~~ main.cpp:59:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); ++i) ~~^~~~~~~~~~