ADDRev

#include <stdio.h>

int main(void)
{
    int a,b,T,cur,first,second,res;
    scanf("%d",&T);
    while(T--)
    {
        scanf("%d %d",&a,&b);
        first=rev(a);
        second=rev(b);
        cur=first+second;
        check(cur);
        res= rev(cur);
        printf("%d\n",res);
    }
    return 0;
}
void check(int res)
{
    int idx=0;
    while(res>0)
    {
        if(res%10!=0)
        {
            idx=idx*10+res%10;
        }
        res/=10;
    }
    res=idx;
}
int rev(int num)
{
    int idx=0;
    while(num>0)
    {
        idx=idx*10+num%10;
        num/=10;
    }
    num=idx;
}