0_0_6843110_9832.cpp: In function `void DFS(int, int, int, int, int, int)':
0_0_6843110_9832.cpp:29: error: `ans1' undeclared (first use this function)
0_0_6843110_9832.cpp:29: error: (Each undeclared identifier is reported only once for each function it appears in.)
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