#include <stdio.h>
             int main()
             {
                 int list;
                 int index=1;
                 int sum;
                 int a;
                 int c;
          printf("please input number \n");
          scanf("%d",&a);
          sum=a;
          do{a=list;
              printf("please input number\n");
              scanf("%d",&list);
              if(list!=a)
              {
                  sum=sum+list;
                  index=index+1;
                  a=list;
          }
              else
                  c=1;
          }
          while(c!=1);
             printf("%d numbers were entered and their sun is %d\n",index,sum);
             
             }