int main()
{   
	double h[40],tmp;
	int n,i,j,k=0;
	char c[7];
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%s %lf",c,&h[i]);
		if(c[0]=='f'){
			h[i]=-h[i];
			k++;
		}
	}
	  for(i=n-1;i>0;i--){   
		for(j=0;j<i;j++){
			if(h[j]>h[j+1]){
				tmp=h[j+1];
				h[j+1]=h[j];
				h[j]=tmp;
			}
		}
	}
    for(i=k;i<n;i++){            
		printf("%.2lf ",h[i]);
	}
    for(i=0;i<k-1;i++){
		printf("%.2lf ",(-h[i]));
	}
	printf("%.2lf\n",(-(h[k-1])));
	return 0;
}

