0_0_11511149_29758.cpp: In function `long long int exgcd(long long int, long long int, long long int&, long long int&)':
0_0_11511149_29758.cpp:15: error: `g' undeclared (first use this function)
0_0_11511149_29758.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)
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