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Solution

This problem is very easy to solve. Just read the problem carefully try to understand what they say. Don’t copy paste.

Source Code
#include<stdio.h>
int main()
{
    long int a,b;
    while(scanf("%ld%ld",&a,&b)==2)
    {
        if(a>b)
            printf("%ld\n",a-b);
        else
            printf("%ld\n",b-a);
    }
    return 0;
}

 

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