helianthus-xzs

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原文章内容如下：

Look for:
  * the exact constraints (multiple sets are too slow for n=10^6^ :( ) 
  * special cases (n=1?)
  * overflow (ll vs int?)
  * array bounds
  * if you have no idea just guess the appropriate well-known algo instead of doing nothing 

Look for:

• the exact constraints (multiple sets are too slow for n=10⁶ :( )
• special cases (n=1?)
• overflow (ll vs int?)
• array bounds
• if you have no idea just guess the appropriate well-known algo instead of doing nothing