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View Compilation Error

0_0_2930881_31521.cpp: In function `double cir_merge(CIR*, int)':
0_0_2930881_31521.cpp:123: error: `tt' undeclared (first use this function)
0_0_2930881_31521.cpp:123: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2930881_31521.cpp:124: error: `tr' undeclared (first use this function)


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