0_0_6721849_4381.cpp: In member function `void NOD::dfs(int)':
0_0_6721849_4381.cpp:13: error: `nod' undeclared (first use this function)
0_0_6721849_4381.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6721849_4381.cpp: In member function `void NOD::dfs2()':
0_0_6721849_4381.cpp:20: error: `nod' undeclared (first use this function)
0_0_6721849_4381.cpp: At global scope:
0_0_6721849_4381.cpp:31: error: `NOD nod[10000]' used prior to declaration
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