foo.cc: In function 'int main()':
foo.cc:17:36: warning: format '%ld' expects argument of type 'long int*', but argument 4 has type 'int*' [-Wformat=]
     while(~scanf("%d%d%ld",&a,&b,&c)) 
                                    ^

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