foo.cc: In function 'int main()':
foo.cc:33:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i=0;i<=n-1+n;i++)
     ^~~
foo.cc:36:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  cout<<ans;
  ^~~~

自豪的采用jd5进行评测(github.com/masnn/jd5)

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