Some sb error summary

• To clear the multi-measuring
  EG CSP-S2 D2T3 , part of the chain of thought of how to do division, also had a large sample, the results of an array is not empty (15 -> 0), why can sample too large? Because graded data.
• long long or unsigned long long
  EG CSP-S2 D1T1 , a very simple question, I started a long long the sample is too big on the matter (100 -> 95), open to unsigned long long ah ~