The Lead Game , What's wrong with my code ?

The code is for question The Lead Game ,its showing wrong answer while submitting but running perfectly on ideone.com .please help .

#include<stdio.h>
int main()
{
int winner,t,i,a[10001],b[10001],leader[10001],j,temp1,temp2,temp3;
scanf("%d",&t);
for(i=0;i<t;i++)
{
    scanf("%d%d",&a[i],&b[i]);
}
for(i=0;i<t;i++)
{
    if(a[i]>b[i])
    leader[i]=a[i]-b[i];
    else
    leader[i]=b[i]-a[i];
}
for(i=1;i<t;i++)
{       if(leader[i-1]>leader[i])
    leader[i]=leader[i-1]-leader[i];
    else
    leader[i]=leader[i]-leader[i-1];
}
for(i=0;i<t-1;i++)
{
    for(j=0;j<t-i-1;j++)
    {
        if(leader[i]<leader[i+1])
        {
            temp1=leader[i];
            leader[i]=leader[i+1];
            leader[i+1]=temp1;
            temp2=a[i];
            a[i]=a[i+1];
            a[i+1]=temp2;
            temp3=b[i];
            b[i]=b[i+1];
            b[i+1]=temp3;
        }
    }
}
if(a[0]>b[0])
winner=1;
else
winner=2;
printf("%d %d",winner,leader[0]);
return 0;
}