init

1I.py

@@ -0,0 +1,15 @@
+n, m = map(int, input().split())
+e = []
+for _ in range(m):
+    u, v = map(int, input().split())
+    e.append((u, v))
+p = list(map(int, input().split()))
+d = [0] * (n + 1)
+for i in range(n):
+    d[p[i]] = i
+ans = "YES"
+for u, v in e:
+    if d[u] > d[v]:
+        ans = "NO"
+        break
+print(ans)