Compilare: main.cpp: In function 'void print(std::vector<int>)': main.cpp:702:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 702 | for (int i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp:703:48: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 703 | 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:707:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 707 | for (int i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'void solve(int)': main.cpp:767:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 767 | for (int i = 0; i < ans.size(); i++) { | ~~^~~~~~~~~~~~ main.cpp:762:8: warning: unused variable 't1' [-Wunused-variable] 762 | ld t1 = clock(); | ^~