Compilare: main.cpp: In function 'void print(std::vector<int>)': main.cpp:704:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 704 | for (int i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp:705:48: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 705 | cout << "X^" << i << "*" << a[i] << (i != a.size() - 1 ? " + " : "\n"); | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<int> add(std::vector<int>, std::vector<int>)': main.cpp:711:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 711 | for (int i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'std::vector<int> sub(std::vector<int>, std::vector<int>)': main.cpp:719:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 719 | for (int i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'std::vector<int> mult(std::vector<int>, std::vector<int>)': main.cpp:746:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 746 | if (i < v2.size()) | ~~^~~~~~~~~~~ main.cpp:748:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 748 | if (mid <= i && i < mid + v3.size()) | ~~^~~~~~~~~~~~~~~~~ main.cpp:750:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 750 | if (2 * mid <= i && i < 2 * mid + v1.size()) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void solve(int)': main.cpp:769:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 769 | for (int i = 0; i < ans.size(); i++) { | ~~^~~~~~~~~~~~