foo.cc: In function 'int main()':
foo.cc:59:11: warning: unused variable 'j' [-Wunused-variable]
     int i,j,k;
           ^
foo.cc:59:13: warning: unused variable 'k' [-Wunused-variable]
     int i,j,k;
             ^
foo.cc:65:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d %d %d",&a,&b,&c);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~

正在同步测试数据，请稍后
自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。