#include <civlc.cvh>

typedef struct Point{
  double x;
  double y;
} Point;

typedef struct Line{
  Point start;
  Point end;
} Line;

$input int N;
$input int K;
$assume(0 <= K && K < N);

void main(){
  Line A[N];
  Point p0={0,0}, p1={1,1};
  Line l0={p0, p1};

  A[K]=l0;
  $assert(A[K].start.x==0);
}