Compilare: main.cpp: In function 'void solve()': main.cpp:38:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < verticale.size(); i++) ~~^~~~~~~~~~~~~~~~~~ main.cpp:44:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < orizontale.size(); i++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:62:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < verticale.size(); i++) ~~^~~~~~~~~~~~~~~~~~ main.cpp:63:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < orizontale.size(); j++) { ~~^~~~~~~~~~~~~~~~~~~ main.cpp:65:17: warning: unused variable 'xd2' [-Wunused-variable] int xd2 = max(verticale[i].first, orizontale[i].first); ^~~ main.cpp:67:17: warning: unused variable 'yd2' [-Wunused-variable] int yd2 = max(verticale[i].second, orizontale[i].second); ^~~