Compilare: main.cpp: In function 'void fill(int)': main.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i=0;i<v[poz].copy.size();i++) { | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:34:11: warning: unused variable 'i' [-Wunused-variable] 34 | int n,i,a,b; | ^