单射
#include<string.h>
#include<stdio.h>
int main()
{
int n ,i ,j ,x,flag;
int a[100010],b[100010];
while(scanf("%d", &n)!=EOF)
{
memset(a, 0, sizeof(a));
memset(b, 0, sizeof(b));
for(i = 0;i < n; i++)
{
scanf("%d",&x);
a[x] = 1;
}
for(j = 0;j < n;j++)
{
scanf("%d",&x);
b[x] = 1;
}
flag = 0;
for(i = 1;i <= 2 * n;i++)
{
scanf("%d", &x);
if(i % 2 != 0)
{
if(a[x] == 1)
{
a[x] = 0;
}
else flag = 1;
}
else
{
if(b[x] != 1)
{
flag = 1;
}
}
}
if(flag)
printf("no\n");
else printf("yes\n");
}
return 0;
}