foo.cc: In function 'int main()':
foo.cc:29:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
freopen("in.txt", "r", stdin);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
foo.cc:30:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lf%d", &s, &n);
~~~~~^~~~~~~~~~~~~~~~~
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自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。