#include <stdio.h>


struct Op
{
    const char *name;
    struct Op  *parent;
    struct Op  *children;
};

static struct Op op_subops[]; // fwd ref to children of ops

static struct Op ops[128] = {
    {"op",0,&op_subops[0]}
};

static struct Op op_subops[4] = {
    {"subop1",&ops[1],0},
    {"subop2",&ops[1],0}
};

int main(void) {
	// your code goes here
	return 0;
}