Printing biggest even number with multiple scanf

I would like to get an output of the biggest even number. but when i input 1 2 3 (3 scanf) the output is 4.

#include<stdio.h>
#include<stdlib.h>
int main()
{
    int ary[100];
    int x,y=0;
    int amount;
    scanf("%d",&amount);fflush(stdin);
    for(x=1;x<=amount;x++)
    {
        scanf("%d",&ary[x]);
        if(ary[x]%2==0)
        {
            if(ary[0]<ary[x])
            {
                ary[0]=ary[x];
            }
        }
    }
    printf("%d",ary[0]);

    getchar();
    return 0;
}