Problem L. Liquid X
时间限制 1000 ms
内存限制 256 MB
样例
样例说明
Remember to flush after printing each experiment.
To flush you need to do the following right after printing a query and a line end:
- fflush(stdout) or cout.flush() in C++;
- System.out.flush() in Java;
- stdout.flush() in Python;
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