/*#include <stdio.h>
int n, k, d[1010];
int lower_bound(int k)
{
int i;
if(d[n]<k) return n+1;
for(i=1;i<=n;i++)
{
if(d[i]>=k)
{
return i;
}
}
}
int main()
{
scanf("%d", &n);
for(int i=1; i<=n; i++)
scanf("%d", &d[i]);
scanf("%d", &k);
printf("%d\n", lower_bound(k));
}
#include<stdio.h>
double abs(double k)
{
if(k>=0)
{
return k;
}
else
{
return -k;
}
}
double main()
{
double n;
scanf("%lf",&n);
printf("%.10g",abs(n));
}
#include <stdio.h>
typedef struct
{
int number;
int age;
double grade;
}student;
int main()
{
student a;
a.age=10;
scanf("%d",&a.age);
student arr[100];
int i;
for(i=1;i<=50;i++)
{
scanf("%d %d %lf",&arr[i].number,&arr[i].age,&arr[i].grade);
}
}
typedef struct
{
char name[50];
int jumsu;
}student;
int main()
{
//student a, b, c;
student arr[101];
}
*/