0_0_20406237_12757.cpp:41:1: error: stray '\302' in program
dfs(a - 1, b - 1, c + 1, d);//向右走两步时的第一种情况
^
0_0_20406237_12757.cpp:41:1: error: stray '\240' in program
0_0_20406237_12757.cpp:41:1: error: stray '\302' in program
0_0_20406237_12757.cpp:41:1: error: stray '\240' in program
0_0_20406237_12757.cpp:41:1: error: stray '\302' in program
0_0_20406237_12757.cpp:41:1: error: stray '\240' in program
0_0_20406237_12757.cpp:42:1: error: stray '\302' in program
dfs(a, b - 1, c - 1, d + 1); //向右走两步时的第二种情况
^
0_0_20406237_12757.cpp:42:1: error: stray '\240' in program
0_0_20406237_12757.cpp:42:1: error: stray '\302' in program
0_0_20406237_12757.cpp:42:1: error: stray '\240' in program
0_0_20406237_12757.cpp:42:1: error: stray '\302' in program
0_0_20406237_12757.cpp:42:1: error: stray '\240' in program
0_0_20406237_12757.cpp:43:1: error: stray '\302' in program
dfs(a + 1, b, c - 1, d - 1);//向右走两步时的第三种情况
^
0_0_20406237_12757.cpp:43:1: error: stray '\240' in program
0_0_20406237_12757.cpp:43:1: error: stray '\302' in program
0_0_20406237_12757.cpp:43:1: error: stray '\240' in program
0_0_20406237_12757.cpp:43:1: error: stray '\302' in program
0_0_20406237_12757.cpp:43:1: error: stray '\240' in program
0_0_20406237_12757.cpp:44:1: error: stray '\302' in program
dfs(a - 1, b + 1, c, d - 1);//向右走两步时的第四种情况
^
0_0_20406237_12757.cpp:44:1: error: stray '\240' in program
0_0_20406237_12757.cpp:44:1: error: stray '\302' in program
0_0_20406237_12757.cpp:44:1: error: stray '\240' in program
0_0_20406237_12757.cpp:44:1: error: stray '\302' in program
0_0_20406237_12757.cpp:44:1: error: stray '\240' in program
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