0_0_5142068_26295.cpp: In function `int main()':
0_0_5142068_26295.cpp:15: error: `abs' undeclared (first use this function)
0_0_5142068_26295.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5142068_26295.cpp:45: error: expected `}' at end of input
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