勤劳的蚂蚁(while循环)

勤劳的蚂蚁，提交之后答案错误为什么

#include <stdio.h>
int main()
{
    int a=0,b=0;
    int id,num;
    scanf("%d %d",&id,&num);
    while(id != 0 && num != 0)
    {
        if(id == 1)
            a+=num;
        else
            b+=num;
        scanf("%d %d",&id,&num);
    }
    if(a==b)
        printf("equal");
    else if(a>b)
        printf("1 %d",a);
    else
        printf("2 %d",b);
    return 0;
}
 

#include <stdio.h>
int main()
{
    int a=0,b=0;
    int id,num;
    scanf("%d %d",&id,&num);
    while(id != 0 || num != 0)//这里改成||，因为如果num=0是可以的
    {
        if(id == 1)
            a+=num;
        else
            b+=num;
        scanf("%d %d",&id,&num);
        if(id == 0 && num == 0){
            break;
        }
    }
    if(a==b)
        printf("equal");
    else if(a>b)
        printf("1 %d",a);
    else
        printf("2 %d",b);
    return 0;
}