Compilare: main.cpp: In function 'void selfmultiply_poly(std::vector<long long int>&, std::vector<long long int>)': main.cpp:188:12: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 188 | while(n<a.size()+b.size()) n*=2; | ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<long long int> add_poly(std::vector<long long int>, std::vector<long long int>)': main.cpp:217:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 217 | for (i = 0; i < c.size(); i++){ | ~~^~~~~~~~~~ main.cpp:218:11: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 218 | if (i < a.size()) c[i] += a[i]; | ~~^~~~~~~~~~ main.cpp:219:11: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 219 | if (i < b.size()) c[i] += b[i]; | ~~^~~~~~~~~~ main.cpp: In function 'std::vector<std::complex<long double> > add_poly(std::vector<std::complex<long double> >, std::vector<std::complex<long double> >)': main.cpp:228:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::complex<long double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 228 | for (i = 0; i < c.size(); i++){ | ~~^~~~~~~~~~ main.cpp:229:11: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::complex<long double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 229 | if (i < a.size()) c[i] += a[i]; | ~~^~~~~~~~~~ main.cpp:230:11: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::complex<long double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 230 | if (i < b.size()) c[i] += b[i]; | ~~^~~~~~~~~~