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 n;
long long a[100005], b[100005];
struct E {
  long long v, w;
  E(long long _v = 0, long long _w = 0) { v = _v, w = _w; }
};
vector<E> e[100005];
inline void addEdge(long long u, long long v, long long w) {
  e[u].push_back(E(v, w));
}
inline long long read() {
  long long x = 0, f = 1;
  char ch = getchar();
  while (ch > '9' || ch < '0') {
    if (ch == '-') f = -1;
    ch = getchar();
  }
  while (ch >= '0' && ch <= '9') {
    x = x * 10 + ch - '0';
    ch = getchar();
  }
  return x * f;
}
inline void write(long long x) {
  if (x < 0) {
    putchar('-');
    x = -x;
  }
  if (x >= 10) write(x / 10);
  putchar(x % 10 + '0');
}
void dfs(long long u) {
  for (long long i = 0; i < e[u].size(); i++) {
    long long v = e[u][i].v, w = e[u][i].w;
    dfs(v);
    if (a[v] < 0) {
      a[u] += w * a[v];
      if (1.0 * w * a[v] < 1e-17) {
        puts("NO");
        exit(0);
      }
    } else
      a[u] += a[v];
  }
}
signed main() {
  n = read();
  for (long long i = 1; i <= n; i++) a[i] = read();
  for (long long i = 1; i <= n; i++) b[i] = read(), a[i] -= b[i];
  for (long long i = 2, u, w; i <= n; i++)
    u = read(), w = read(), addEdge(u, i, w);
  dfs(1);
  puts(a[1] >= 0 ? "YES" : "NO");
  return 0;
}
