0_0_30023864_29313.cpp: In function 'bool judge4(long long int)':
0_0_30023864_29313.cpp:9:22: error: 'ln' was not declared in this scope
long long y=exp(ln(x)/4);
^
0_0_30023864_29313.cpp: In function 'bool judge3(long long int)':
0_0_30023864_29313.cpp:15:22: error: 'ln' was not declared in this scope
long long y=exp(ln(x)/3);;
^
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