#include <stdio.h>
#include <string.h>

int main()

{
	int n;
	scanf("%d",&n);
	
	int judge = 1;//1表示满意
	
	int want[2*n];
	
	for(int i = 0;i<2*n;i++)
	{
		scanf("%d",&want[i]);
	} 
	
	for(int i = 0;i<2*n;i++)
	{
		int k = want[i];
		if(want[k-1]!=i+1)
		{
			judge = 0;//不满意 
		}
	}
	
	if(judge == 1)
	{
		printf("Yes");
	}
	
	else
	{
		printf("No");
	}
	
	return 0;
}