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输入并不是排序好的，且输入的每一项都要出现。。。。只能面向测试数据猜题了。。。。贡献两组测试数据

Posted by lddlinan at 2021-11-27 11:51:35 on Problem 2884 
2
19
1 3 
2 1 
3 2
4 2
5 2
6 3
7 1
8 2
9 2
10 2
11 2
12 3
13 1
14 3
15 2
16 1
17 2
18 1
19 2
16
12 1
124 1
1234 2
1235 2
1236 2
1237 2
1238 2
1239 2
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1


udebug上的输出是
14
14
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