Goomba Stacks

goombastacks.py

@@ -0,0 +1,9 @@
+n = int(input())
+g_total = 0
+for _ in range(n):
+    g, b = map(int, input().split())
+    g_total += g
+    if b > g_total:
+        print("impossible")
+        exit()
+print("possible")