0_0_4123139_21809.cpp:4: error: expected constructor, destructor, or type conversion before ';' token
0_0_4123139_21809.cpp:8: error: ISO C++ forbids declaration of `dfs' with no type
0_0_4123139_21809.cpp: In function `int dfs(int, int, int)':
0_0_4123139_21809.cpp:10: error: return-statement with no value, in function returning 'int'
0_0_4123139_21809.cpp:12: error: return-statement with no value, in function returning 'int'
0_0_4123139_21809.cpp:13: error: `abs' undeclared (first use this function)
0_0_4123139_21809.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4123139_21809.cpp:15: error: return-statement with no value, in function returning 'int'
0_0_4123139_21809.cpp:18: error: `map' undeclared (first use this function)
0_0_4123139_21809.cpp:22: error: return-statement with no value, in function returning 'int'
0_0_4123139_21809.cpp: In function `int main()':
0_0_4123139_21809.cpp:38: error: `map' undeclared (first use this function)
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