#include<stdio.h>
#include<stdlib.h>
struct student
{
    int num;
    float score;
    struct student *next;
};
struct student *head,*p1,*p2;
void main()   
    {
   
    p1=(struct student *)malloc(sizeof(struct student));
    scanf("%d,%f",&p1->num,&p1->score);
    head=p1;
    p2=head;
    while(p1->num!=0)
    {        
        p1=(struct student *)malloc(sizeof(struct student));
        scanf("%d,%f",&p1->num,&p1->score);
        p2->next=p1;
        p2=p1;
        
    }
        p2->next=NULL;   
    while(p1!=NULL)
    {
    printf("%d,%f\n",p1->num,p1->score);
    p1=p1->next;
    }
}