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- #include<stdio.h>
- int main()
- {
- int i,m,L,t,R,k=0,rev;
- scanf("%d",&t);
- while(t--)
- {
- scanf("%d %d",&L,&R);
- for(i=L;i<=R;i++)
- { m=i;
- rev=0;
- while(m>0)
- {
- rev=rev*10+m%10;
- m/=10;
- }
- if(rev==i)
- k+=rev;
- }
- printf("%d",k);
- }
- return 0;
- }
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