Interval 2

#include<stdio.h>
int main()
{
    int num,i,n,in=0,out=0;
    scanf("%d",&num);
    for(i=1; i<=num; i++)
    {
        scanf("%d",&n);
        if(n>=10 && n<=20)
        {
            in++;
        }
        else
            out++;
    }
    printf("%d in\n%d out\n",in,out);
    return 0;
}