foo.cc: In function 'int read()':
foo.cc:26:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
         if(ch=='-') w=-1;ch=getchar();
         ^~
foo.cc:26:26: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         if(ch=='-') w=-1;ch=getchar();
                          ^~

自豪地采用[jd5](https://github.com/masnn/jd5)进行评测