0_0_17096995_19758.cpp:4:5: error: stray '#' in program
11 #include <math.h>
^
0_0_17096995_19758.cpp:4:1: error: expected unqualified-id before numeric constant
11 #include <math.h>
^
0_0_17096995_19758.cpp:6:1: error: expected unqualified-id before numeric constant
13 int dir[4][2]={{1,0},{0,1},{-1,0},{0,-1}};
^
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