Compilare: main.cpp: In function 'void eval(ull, ull, ull, ull&, ull&)': main.cpp:13:22: warning: comparison of integer expressions of different signedness: 'int' and 'ull' {aka 'long long unsigned int'} [-Wsign-compare] 13 | for(int i = 0; i <= e2; ++i) { | ~~^~~~~ main.cpp:14:14: warning: comparison of integer expressions of different signedness: 'int' and 'ull' {aka 'long long unsigned int'} [-Wsign-compare] 14 | if(i == e1 || i == e2){ | ~~^~~~~ main.cpp:14:25: warning: comparison of integer expressions of different signedness: 'int' and 'ull' {aka 'long long unsigned int'} [-Wsign-compare] 14 | if(i == e1 || i == e2){ | ~~^~~~~ main.cpp: In function 'void calc_bf()': main.cpp:58:48: warning: comparison of integer expressions of different signedness: 'std::unordered_map<long long unsigned int, long long unsigned int>::mapped_type' {aka 'long long unsigned int'} and 'int' [-Wsign-compare] 58 | if(ok) if(R.count(re) && R[re] > v) R[re] = v;