프레젠테이션 오류가 있는 이유

Your task is to calculate the sum of some integers.
 
 
Input
Input contains an integer N in the first line, and then N lines follow. Each line starts with a integer M, and then M integers follow in the same line.
 
 
Output
For each group of input integers you should output their sum in one line, and you must note that there is a blank line between outputs.
 
 
Sample Input

3
4 1 2 3 4
5 1 2 3 4 5
3 1 2 3

 
 
Sample Output

10

15

6

 
#include void main(){ int a,sum=0,m,n,i,j; scanf("%d",&n); for(i=0;i {  scanf("%d",&m);  for (j=0;j  {   scanf("%d",&a);   sum=sum+a;  }     printf("%d/n/n",sum);   sum=0; }}