5
27468 7465 74275 40573 40155
112071 76270 244461 264202 132397
1 777133331
2 107454154
3 652330694
4 792720519
 5
78188 56310 79021 70050 65217
115040 5149 128449 98357 36580
1 451393770
2 574046602
3 590130784
4 112514248
 7
1 1 1 1 1 1 1
1 3000000000 3000000000 3000000000 1000000000 1000000000 1000000000
1 1000000000
1 1000000000
1 1000000000
1 1000000000
1 1000000000
1 1000000000
 10
2 8 6 1 2 7 6 9 2 8
4 9 4 3 5 2 9 3 7 3
1 8
2 8
3 8
4 10
5 1
6 4
7 3
8 10
9 2
 11
1 1 1 1 1 1 1 1 1 1 1
1 1000000001 1000000001 1000000001 1000000001 1000000001 1000000001 1000000001 1000000001 1000000001 1000000001
1 1000000000
1 1000000000
1 1000000000
1 1000000000
1 1000000000
1 1000000000
1 1000000000
1 1000000000
1 1000000000
1 1000000000
 5
2 1 1 2 3
1 2 2 2 1
1 2
1 3
2 4
1 4

NO
 NO
 NO
 YES
 NO
 NO

#include <bits/stdc++.h>
using namespace std;
long long int b[100005], a[100005], x, k;
int main() {
  int n, i;
  cin >> n;
  for (i = 1; i <= n; i++) cin >> b[i];
  for (i = 1; i <= n; i++) {
    cin >> a[i];
    a[i] = b[i] - a[i];
  }
  for (i = n; i >= 2; i--) {
    cin >> x >> k;
    if (a[x] > 0 && a[i] < 0) {
      a[x] = a[x] % k;
      a[i] = a[i] + a[x] / k;
    } else if (a[i] > 0) {
      a[x] += a[i];
      a[i] = 0;
    }
  }
  for (i = 1; i <= n; i++)
    if (a[i] < 0) {
      cout << "NO";
      return 0;
    }
  cout << "YES";
}
