Run id: 139541

Main.cc: In function 'int zhi(int)':
Main.cc:10:12: error: 'a_' was not declared in this scope
         if(a_%i==0){
            ^
Main.cc: In function 'int main()':
Main.cc:17:15: warning: unused variable 'f' [-Wunused-variable]
     int n,s=0,f=0;
               ^