0_0_25237149_15418.cpp: In function 'void dfs(int, int, int)':
0_0_25237149_15418.cpp:25:28: error: 'dfss' was not declared in this scope
dfss(x,y,step+1);
^
0_0_25237149_15418.cpp:31:28: error: 'dfss' was not declared in this scope
dfss(x,y,step+2);
^
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