#include <iostream>
#include <cstring>
using namespace std;
struct coada
{long c[3010];
 long inc,sf;
};
coada cd;
void push(int x,coada & y)
{y.sf++;
 y.c[y.sf]=x;
}
void pop(coada&y)
{if(y.inc<=y.sf)
    y.inc++;
}
void front (coada y)
{if(y.inc<=y.sf)
    cout<<y.c[y.inc]<<endl;
}
int main ()
{cd.sf=-1;
    int n,nr;
 char s[7];
 cin>>n;
 for(int i=1;i<=n;i++)
 {cin>>s;
  if(strcmp(s,"push")==0)
  {cin>>nr;
   push(nr,cd);
  }
  else if(strcmp(s,"pop")==0)
      pop(cd);
      else if(strcmp(s,"front")==0)
              front(cd);
  }
    return 0;
  }