Compilare: main.cpp: In function 'std::vector<int> combine(std::vector<int>, std::vector<int>)': main.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int i=0;i<=x.size();i++) | ~^~~~~~~~~~ main.cpp:18:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(int j=0;j<=y.size();j++) | ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:75:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for(int i=1;i<order[n+1].size();i++) | ~^~~~~~~~~~~~~~~~~~