Compilare: main.cpp:3:1: warning: multi-line comment [-Wcomment] 3 | //\ | ^ main.cpp:9:1: warning: multi-line comment [-Wcomment] 9 | // \ __ __ \ | ^ main.cpp:36:1: warning: multi-line comment [-Wcomment] 36 | // \ | ^ main.cpp: In constructor 'Big::Big(std::string)': main.cpp:88:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 88 | for (int i = 0; i < s.size(); i += basen) | ~~^~~~~~~~~~ main.cpp: In static member function 'static void Big::_sub_(std::vector<long long int>&, const std::vector<long long int>&)': main.cpp:201:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 201 | for (int i = 0; i < b.size(); ++i) | ~~^~~~~~~~~~ main.cpp:203:31: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 203 | for (int i = 0; i + 1 < b.size() || a[i] < 0; ++i) { | ~~~~~~^~~~~~~~~~ main.cpp: In static member function 'static void Big::_sub2_(std::vector<long long int>&, const std::vector<long long int>&)': main.cpp:216:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 216 | for (int i = 0; i < a.size(); ++i) | ~~^~~~~~~~~~ main.cpp:217:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 217 | a[i] = (i < b.size() ? b[i] : 0) - a[i]; | ~~^~~~~~~~~~ main.cpp:218:31: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 218 | for (int i = 0; i + 1 < a.size(); ++i) { | ~~~~~~^~~~~~~~~~ main.cpp: In static member function 'static void Big::_add_(std::vector<long long int>&, const std::vector<long long int>&)': main.cpp:231:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 231 | for (int i = 0; i < b.size(); ++i) | ~~^~~~~~~~~~ main.cpp:233:31: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 233 | for (int i = 0; i + 1 < b.size() || a[i] >= base; ++i) { | ~~~~~~^~~~~~~~~~ main.cpp: In static member function 'static std::vector<long long int> Big::_slow_mult_(const std::vector<long long int>&, const std::vector<long long int>&)': main.cpp:266:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 266 | for (int i = 0; i < a.size(); ++i) { | ~~^~~~~~~~~~ main.cpp:267:31: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 267 | for (int j = 0; j < b.size(); ++j) { | ~~^~~~~~~~~~ main.cpp:274:31: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 274 | for (int i = 0; i + 1 < tmp.size(); ++i) { | ~~~~~~^~~~~~~~~~~~ main.cpp: In static member function 'static std::pair<std::vector<long long int>, std::vector<long long int> > Big::_div_(std::vector<long long int>, std::vector<long long int>)': main.cpp:320:31: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 320 | for (int j = 0; j < b.size(); ++j) {