//Lipseste ideea generala.
#include<stdio.h>
#include<math.h>

int v[1000000];
int e[1000000];
int n,dmin,i;

int main(){
	FILE * f = fopen("multimi2.in","r");
	fscanf(f,"%d",&n);
	fclose(f);
//	for(i=1;i<=n/2;i++){
//		v[i]=i;
//		e[i]=n-i;
//	}

	
	
	
	return 0;
	
}