0_0_8550433_32238.cpp: In function `int solve()':
0_0_8550433_32238.cpp:14: error: `sort' undeclared (first use this function)
0_0_8550433_32238.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8550433_32238.cpp:18: error: `max' undeclared (first use this function)
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