Compilare: main.cpp: In function 'void solve()': main.cpp:62:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < concat.size() && q.size() < limit; i++) ~~^~~~~~~~~~~~~~~ main.cpp:62:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < concat.size() && q.size() < limit; i++) ~~~~~~~~~^~~~~~~ main.cpp:63:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(z[i] == pat.size()) ~~~~~^~~~~~~~~~~~~