/*
#include <stdio.h>
#include <stdlib.h>
int main()
{
printf("Hello world!\n");
return 0;
}
*/
/*
#include<stdio.h>
int memo[10001]={};
int rec(int n)
{
if(memo[n]!=0) return memo[n];
if(n==1||n==2) return memo[n]=n;
return memo[n]=(rec(n-1) + rec(n-2))%100000007;
}
int main()
{
int n;
scanf ("%d",&n);
printf ("%d",rec(n));
return 0;
*/
/*
#include<stdio.h>
int main()
{
int a,n,c=0;
scanf ("%d",&n);
}
*/
/*
#include<stdio.h>
int memo[10001]={};
int rec(int n)
{
if(memo[n]!=0) return memo[n];
if(n<=3) return n;
return memo[n]=(rec(n-1) + rec(n-2))%100007;
}
int main()
{
int n;
scanf ("%d",&n);
printf ("%d",rec(n));
return 0;
}
*/
/*
#include <stdio.h>
int main()
{
int n,i,c=0;
scanf ("%d",&n);
for(;;)
{
}
}
*/