0_0_7374651_10503.cpp: In function `int main()':
0_0_7374651_10503.cpp:16: error: `abs' undeclared (first use this function)
0_0_7374651_10503.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7374651_10503.cpp: At global scope:
0_0_7374651_10503.cpp:26: error: expected constructor, destructor, or type conversion at end of input
0_0_7374651_10503.cpp:26: error: expected `,' or `;' at end of input
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