I'll play a trick on you

I'll play a trick on you

时间限制：3000 ms  |  内存限制：65535 KB

难度：1

描述

Please look the picture carefully. Then I'll give you two integers and your task is output the third one.
Please never doubt the picture.

输入

The first line is a number T(1<=T<=30), represents the number of case. The next T blocks follow each indicates a case.
Each case contains two integers A,B (1<=B<=A<=10^100)

输出

For each case, output the number of case and the third integer.

样例输入

399 7245 2739 18

样例输出

271821

来源

2011 Alibaba Programming Contest

上传者

李文鑫

#include<stdio.h>
#include<string.h>
int main()
{
int t,i,j,sum1,sum2,sum,len1,len2;
scanf("%d",&t);
while(t--)
{
char a[101]={'\0'},b[101]={'\0'};
sum=0;
sum1=0;
sum2=0;
scanf("%s%s",a,b);
len1=strlen(a);
len2=strlen(b);
for(i=0;i<len1;++i)
sum1=sum1+(a[i]-'0');

for(j=0;j<len2;j++)
sum2=sum2+(b[j]-'0');

sum=sum1+sum2;
printf("%d\n",sum);
}
return 0;
}