0_0_4140152_27152.cpp: In function `int find(int)':
0_0_4140152_27152.cpp:41: error: `stack' undeclared (first use this function)
0_0_4140152_27152.cpp:41: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4140152_27152.cpp: In function `void KM()':
0_0_4140152_27152.cpp:61: error: `stack' undeclared (first use this function)
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