#31 : 1931_회의실 배정

#31 : Week7_예원이니

Author: yewonahn

이티예원/1931_회의실 배정

@@ -0,0 +1,21 @@
+N = int(input())
+time = []
+
+
+for i in range(N):
+    start, end = map(int, input().split())
+    time.append([start, end])
+
+
+time = sorted(time, key = lambda a : a[0])  
+time = sorted(time, key = lambda a : a[1])
+
+finish = 0
+cnt = 0
+
+for start, end in time:
+    if start >= finish:
+        cnt += 1
+        finish = end
+
+print(cnt)