#include <iostream>
 #include <cstdlib>
 using namespace std;

 class Auto {
  int maxv;
  int v;
  int maxgear;
  int gear;
 public:
  explicit Auto(int maxgear=4, int gear=0, int maxv=220, int v=0): maxv(abs(maxv)),
        v(v<0?0:v>abs(maxv)?abs(maxv):v), maxgear(abs(maxgear)),
        gear(gear<0?0:gear>abs(maxgear)?abs(maxgear):gear)  {
  }

  void shift(bool up) {
    if (up) {
      if (gear<maxgear) ++gear;
    }
    else
      if (gear>0) --gear;
  }

  void accel(int amount) {
    int res=v+amount;
    if (res<0) v=0;
    else if (res>maxv) v=maxv;
    else v=res;
  }

  void print() {
    cout<<v<<"("<<maxv<<")km/h im "<<gear<<"("<<maxgear<<").Gang";
  }
 };