Compilare: main.cpp: In member function 'bignum bignum::operator+(bignum)': main.cpp:31:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | if(i<b.v.size()) | ~^~~~~~~~~~~ main.cpp:33:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | if(i<v.size()) | ~^~~~~~~~~ main.cpp: In member function 'bignum bignum::operator-(bignum)': main.cpp:65:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for(int i=0;i<b.v.size();i++) | ~^~~~~~~~~~~ main.cpp:67:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for(int i=0;i<rez.size();i++) | ~^~~~~~~~~~~