Compilare: main.cpp: In function 'int main()': main.cpp:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<init.size();++i) ~^~~~~~~~~~~~ main.cpp:51:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<game.size() and ok;++i) ~^~~~~~~~~~~~