Compilare: main.cpp: In function 'int main()': main.cpp:2330:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 2330 | for(i=0;i<vec.size();i++) | ~^~~~~~~~~~~ main.cpp:2296:15: warning: unused variable 'k' [-Wunused-variable] 2296 | int n,i,j,k,l,x,gc; | ^ main.cpp:2296:17: warning: unused variable 'l' [-Wunused-variable] 2296 | int n,i,j,k,l,x,gc; | ^ main.cpp:2296:19: warning: unused variable 'x' [-Wunused-variable] 2296 | int n,i,j,k,l,x,gc; | ^