0_0_35213766_22516.cpp: In function 'bool eq(double, double)':
0_0_35213766_22516.cpp:17:18: error: 'fabs' was not declared in this scope
return fabs(a-b) < 1e-9;
^
0_0_35213766_22516.cpp: In function 'int main()':
0_0_35213766_22516.cpp:88:34: error: 'lround' was not declared in this scope
printf("%ld\n",lround(ans));
^
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