0_0_16983696_27553.cpp: In function 'int stelin(int)':
0_0_16983696_27553.cpp:6:30: error: 'log' was not declared in this scope
return (int) ceil((n * log(n) - n + 0.5 * log( 2 * n * 3.141592653)) / log(10));
^
0_0_16983696_27553.cpp:6:80: error: 'ceil' was not declared in this scope
return (int) ceil((n * log(n) - n + 0.5 * log( 2 * n * 3.141592653)) / log(10));
^
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