int main(){
 int x=0,y=0,i,j,n;
 double t,e;
 double h[45],girl[45],boy[45];
 char sex[10];
 scanf("%d",&n);
 for(i=0;i<n;i++){
   scanf("%s %lf",sex,&(h[i]));
   //printf("%c",sex[0]);
   if(sex[0]=='f') {
	   girl[x]=h[i];
	   x++;
   }
   else{
       boy[y]=h[i];
	   y++;
   }
 }
 for(i=x;i>0;i--){
	 for(j=0;j<i-1;j++){
		 if(girl[j]<girl[j+1]){
		   t=girl[j];
		   girl[j]=girl[j+1];
		   girl[j+1]=t;
		 }
	 }
 }
 for(i=y;i>0;i--){
	 for(j=0;j<i-1;j++){
		 if(boy[j]>boy[j+1]){
		   t=boy[j];
		   boy[j]=boy[j+1];
		   boy[j+1]=t;
		 }
	 }
 }
 for(i=0;i<y;i++) printf("%.2lf ",boy[i]);
 for(j=0;j<x-1;j++) printf("%.2lf ",girl[j]);
 printf("%.2lf",girl[x-1]);
 return 0;
}