WA in TLG(The Lead Game)

#include<stdio.h>

#include<string.h>

int main(void)

{

int i,j,n,max=0,k=0;

scanf("%d",&n);

int a[n+1],s[n+1],t[n+1];

for (i=0 ;i<n ;i++)

{

    scanf("%d %d",&s[i],&t[i]);

    a[i]=abs(s[i]-t[i]);

    if(a[i]>max)

    {

        max=a[i];

        k=i;

    }

}

if(s[k]>t[k])

    printf("%d %d",1,max);

else 

    printf("%d %d",2,max);
return 0;

}