Compilare: main.cpp: In member function 'int roller::bser()': main.cpp:52:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ps+i < v.size() && val < v[ps+i]){ ~~~~~^~~~~~~~~~ main.cpp: In member function 'void roller::setz()': main.cpp:68:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ps == v.size()){ ~~~^~~~~~~~~~~ main.cpp: In function 'void rezolvescu()': main.cpp:98:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = n; i < s.size(); ++i){ ~~^~~~~~~~~~