0_0_10569660_25652.cpp: In function `double Length(Vector)':
0_0_10569660_25652.cpp:33: error: `B' undeclared (first use this function)
0_0_10569660_25652.cpp:33: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10569660_25652.cpp: In function `int main()':
0_0_10569660_25652.cpp:82: error: expected `)' before ';' token
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