I did the same thing not dynamically but using 2D static arrays , .I even tried reading new line character with scanf (). Im getting segmentation fault error can some one help me regading the same.

include

include

include

include

include

using namespace std;

int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT */
int a[100000][300000],n,q,i,m,j,s; scanf("%d %d\n",&n,&q); printf("%d %d",n,q); scanf("%d",&i);

for(i=0;i<n;i++)
{   scanf("%d ",&s);
    for(j=0;j<s;j++)
    {
        scanf("%d ",&a[i][j]);
    }
        scanf("\n");
}

for(i=0;i<q;i++)
{
    scanf("%d %d",m,n);
    printf("%d %d",a[m][n]);
}
return 0;

}