#include <iostream>
#include <cstdlib>

#include <string>
#include <sstream>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <iostream>
#include <fstream>
#include <unistd.h>
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <cassert>
#include <cstring>
#include "sys/time.h"
#ifdef LOCAL
#include <gd.h>
#include <gdfonts.h>
#endif
using namespace std;
#define HERE (cerr << "LINE: " << __LINE__ << " " << __FUNCTION__ << endl)

#define DBG(x) cerr << #x << ": " << x << endl

struct timeval timer_begin, timer_end;
uint64_t tsc_begin;
double sec_per_count = -1;
int timer_called;
inline uint64_t get_time_64() {
  uint32_t lo, hi;
  asm volatile ("rdtsc" : "=a" (lo), "=d" (hi));
  return (((uint64_t)hi << 32) | lo);
}

inline void timer_start() 
{
  timer_called++;
  gettimeofday(&timer_begin, NULL);
  tsc_begin = get_time_64();
}     
inline double timer_now() 
{
  if (sec_per_count < 0) {
    timer_called++;
    gettimeofday(&timer_end, NULL);         
    double duration = timer_end.tv_sec - timer_begin.tv_sec +
      (timer_end.tv_usec - timer_begin.tv_usec)/1000000.0;
    uint64_t tsc_duration = get_time_64() - tsc_begin;
    sec_per_count = duration / tsc_duration;
    DBG(1/sec_per_count);
  }
  return (get_time_64() - tsc_begin) * sec_per_count;
}

template<class T>
const T& clamp(const T& v,const T& lo,const T& hi) {
  return (v < lo) ? lo : (v > hi) ? hi : v;
}
template<typename T>
void assign_min_max(T& min,T& max,const T& x) {
  if (x < min)
    min = x;
  if (x > max)
    max = x;
}
unsigned int hash_function(unsigned long p) {
  // xor32()
  p ^= p<<7;
  p ^= p>>1;
  p ^= p<<25;
  unsigned int c = __builtin_popcount(p);
  return p<<c | p>>(32-c);
}
uint64_t hash_function64(uint64_t p) {
  // xor64()
  p ^= p<<16;
  p ^= p>>7;
  p ^= p<<39;
  uint64_t c = __builtin_popcount(p);
  return p<<c | p>>(64-c);
}  

struct xor128_t {
  uint64_t x, y, z, w;

  xor128_t(int seed=0) : x(123456789^seed) , y(362436069), z(521288629), w(88675123) {
    for (int i=0; i<48; i++)
      get();
  }

  void init(int seed) {
    x = 123456789^seed;
    y = 362436069;
    z = 521288629;
    w = 88675123;

    for (int i=0; i<48; i++)
      get();
  }

  inline uint64_t get() {
    uint64_t t=(x^(x<<11)); x=y; y=z; z=w;
    return (w=(w^(w>>19))^(t^(t>>8)));
  }

  inline uint64_t get(unsigned int sz) {
    if (sz <= 1)
      return 0;

    uint64_t x;
    const uint64_t mask = (1<<(ilogb(sz-1)+1)) - 1;
    //cout << sz << " " << mask << endl;
    assert(mask >= (sz-1) && mask < 2*sz-1);
    do {
      x = get() & mask;
    } while (x >= sz);

    return x;
  }

  inline int64_t get(int beg,int end) {
    return get(end-beg) + beg;
  }

  double get_double() {
    static const double double_factor = 1.0 / (1.0 + 0xffffffffffffffffuLL);
    return get() * double_factor;
  }

  double get_norm() {
    double a = get_double();
    double b = get_double();

    return sqrt(-2*log(a)) * cos(2*M_PI*b);
  }

  double get_gamma(double a) {
    if (a < 1.0) {
      return get_gamma(1+a) * pow(get_double(), 1/a);
    }
    
    double d = a - 1/3.0;
    double c = 1/sqrt(9.0 * d);

    while (true) {
      double x = get_norm();
      double uni = 1 - get_double();
      double v = (1.0+c*x)*(1.0+c*x)*(1.0+c*x);
      if (v > 0 && log(uni) < 0.5 * x*x + d - d*v + d*log(v))
	return d*v;
    }
  }

  template<typename T> void shuffle(vector<T>& v,int partial=-1) {
    int sz = v.size();
    if (partial < 0 || partial > sz)
      partial = sz;

    for (int i=0; i<partial; i++) {
      swap(v[i], v[i + get(sz-i)]);
    }
  }
  
  template<typename T> T sample(const vector<T>& v) {
    assert(!v.empty());
    return v[get(v.size())];
  }
};

// Van der Corput sequence
double vdc(int i,int base) {
  double result = 0;
  double f = 1;

  while (i > 0) {
    f /= base;
    result += f * (i%base);
    i = i/base;
  }

  return result;
}

struct uf_t {
  vector <int16_t> parent;

  void clear() {
    parent.clear();
  }

  void add(int elm) {
    if (elm >= parent.size()) 
      parent.resize(elm+1, -1);
  }

  void merge(int a,int b) {
    add(a);
    add(b);

    int ia = a;
    int ib = b;

    if ((ia^ib)&1) swap(ia, ib);  // ok?
      
    int ra = root(ia);
    int rb = root(ib);

    if (ra != rb) {
      parent[ra] += parent[rb];
      parent[rb] = ra;
    }
  }

  int size(int elm) {
    return -parent[root(elm)];
  }

  int id(int elm) {
    return root(elm);
  }

  int root(int ia) {
    add(ia);
    return (parent[ia] < 0) ? ia : (parent[ia] = root(parent[ia]));
  }
};

struct reusable_set_t {
  typedef uint8_t mark_t;
  mark_t mark;
  vector<mark_t> v;
  reusable_set_t() {}
  reusable_set_t(int n) : v(n), mark(1) {}

  void insert(int x) { v[x] = mark; }
  void erase(int x) { v[x] = mark-1; }
  int count(int x) const { return (v[x] == mark); }
  void clear() {
    mark++;
    if (mark == 0) {
      fill(v.begin(), v.end(), 0);
      mark ++;
    }
  }
};

struct sa_t {
  double ini, fin, inv_T, progress;
  int num_call, num_accept, num_better;
  xor128_t rng;
  sa_t() {}
  sa_t(double ini, double fin) : ini(ini), fin(fin), num_accept(0), num_call(0), num_better(0) {
    set_progress(0);
  }

  void set_progress(double x) {
    progress = clamp(x, 0.0, 1.0);
    inv_T = 1 / (ini * pow(fin/ini, progress));
  }

  bool acceptable(double x) {
    //bool result = (x > 0) || rng.get_double() < exp(x*inv_T);
    //bool result = (x > 0) || log(1-rng.get_double()) < x*inv_T;
    double z = x*inv_T;
    bool result = (x > 0) || (z > -12 && log(1-rng.get_double()) < z);

    //num_call ++;
    //num_accept += result;
    //num_better += (x > 0);

    return result;
  }

  void show_log() const {
    cerr << "better/accept/call: "
	 << num_better
	 << "/" << num_accept
	 << "/" << num_call 
	 << " " << (double)num_accept/num_call << endl;
  }
};


template <typename T>
struct pool_t {
  vector<T> v;
  int N;

  pool_t(int sz=0) : v(sz), N(0) {}

  void clear() { N = 0; }
  T& next() {
    N++;
    while (N >= v.size())
      v.resize(v.size()*11/10 + 1);
    return v[N-1];
  }

  typename vector<T>::iterator begin() { return v.begin(); }
  typename vector<T>::iterator end() { return v.begin()+N; }
  T& operator[](int i) { return v[i]; }
  size_t size() const { return N; }
  void resize(int sz) { assert(sz <= N); N = sz; }
  void swap(pool_t<T>& pl) {
    v.swap(pl.v);
    std::swap(N, pl.N);
  }
};

template <typename Score_t,typename Item_t,typename HashFunc_t>
struct best_k_t {
  vector<pair<Score_t,int>> v;
  vector<Item_t> items;
  HashFunc_t hashfunc;
  set<uint32_t> used;
  bool never_push;

  best_k_t() : never_push(false) {}

  void push_force(const Score_t sc,const Item_t& e) {
    int id = items.size();
    items.push_back(e);

    int n = v.size();
    v.push_back(pair<Score_t,int>(sc,id));

    int m = (n+1)/2 - 1;
    while (n > 0 && v[n] < v[m]) {
      swap(v[n], v[m]);
      n = m;
      m = (n+1)/2 - 1;
    }
  }

  bool push(const Score_t sc,const Item_t& e,int w) {
    assert(!never_push);
    if (v.size() < w) {
      auto h = hashfunc(e);
      if (!used.count(h)) {
	used.insert(h);
	push_force(sc, e);
	return true;
      } else {
	return false;
      }
    } else if (sc > v[0].first) {
      auto h = hashfunc(e);
      if (!used.count(h)) {
	int id = v[0].second;
	v[0].first = sc;
	items[id] = e;
	used.insert(h);
	rebuild();
	return true;
      } else {
	return false;
      }
    }
    return false;
  }

  bool match(const Score_t sc,int w) {
    return (v.size() < w || sc > v[0].first);
  }

  void rebuild() {
    int n = 0;
    while (true) {
      int L = (n+1)*2 - 1;
      int R = L+1;

      if (L >= v.size()) 
	break;

      int m = (R >= v.size() || v[L] < v[R]) ? L : R;

      if (v[m] < v[n]) {
	swap(v[m], v[n]);
	n = m;
      } else {
	break;
      }
    }
  }

  Item_t pop() {
    // fix me
    never_push = true;
    
    int id = v[0].second;
    Item_t ret = items[id];

    v[0] = v.back();
    v.pop_back();

    rebuild();

    return ret;
  }
  Item_t top() { return v[0].second; }

  Item_t best() const {
    int best_i = 0;
    for (int i=0; i<v.size(); i++) {
      if (v[i] < v[best_i])
	best_i = i;
    }
    return items[v[best_i].second];
  }

  void clear() { v.clear(); }
  bool empty() const { return v.empty(); }
  int size() const { return v.size(); }
};

template<typename T> ostream& operator<<(ostream& os, const vector<T>& v) {
  os << "[ ";
  for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " ]"; 
  return os; 
}
template<typename T> ostream& operator<<(ostream& os, const set<T>& v) {
  os << "{ ";
  for(typename set<T>::const_iterator it=v.begin(); it!=v.end(); ++it) {
    if (it != v.begin())
      os << ", ";
    os << *it; 
  }
  os << " }"; 
  return os; 
}
template<typename T1,typename T2> ostream& operator<<(ostream& os, const pair<T1,T2>& v) {
  os << "[ " << v.first << ", " << v.second << "]";
  return os; 
}

#ifdef LOCAL
double TIME_LIMIT_FACTOR = 0.55;
#else
double TIME_LIMIT_FACTOR = 1.0;
#endif
double TIME_LIMIT = TIME_LIMIT_FACTOR * 10.0;

/* insert here */
struct edge_t {
  int a, b, d;
};

struct order_t {
  int t, id, dest;
};
ostream& operator<<(ostream& os,const order_t& o) {
  os << "o#" << o.id << "(" << o.dest << "@" << o.t << ")";
  return os;
}

struct testcase_t {
  int V, E;
  vector<edge_t> es;
  vector<int> freq;
  //vector<int> carrying;
  map<int,vector<int>> carrying;
  vector<order_t> os;
  int t_max;

  // read graph and t_max.
  // return: problem ID ('A' or 'B')
  char read_header(istream& is) {
    is >> V >> E;
    es.resize(E);
    for (int i=0; i<E; i++) {
      is >> es[i].a >> es[i].b >> es[i].d;
      es[i].a --;
      es[i].b --;
    }

    build_distance_table();

    string s;
    getline(is, s);
    if (s.empty())
      getline(is, s);
    stringstream ss(s);
    if (find(s.begin(), s.end(), ' ') != s.end()) {
      freq.resize(V);
      for (int i=0; i<V; i++)
        ss >> freq[i];
      is >> t_max;
      return 'B';
    } else {
      ss >> t_max;
      return 'A';
    }
  }

  vector<int> ds;
  vector<int> via;
  void build_distance_table() {
    ds.resize(V*V, 1234567);
    via.resize(V*V);

    for (const auto& e : es) {
      ds[e.a*V+e.b] = e.d;
      ds[e.b*V+e.a] = e.d;
    }
    for (int i=0; i<V; i++)
      ds[i*V+i] = 0;

    for (int i=0; i<V; i++)
      for (int j=0; j<V; j++)
        via[i*V+j] = j;

    for (int k=0; k<V; k++)
      for (int i=0; i<V; i++)
        for (int j=0; j<V; j++) {
          if (ds[i*V+k]+ds[k*V+j] < ds[i*V+j]) {
            ds[i*V+j] = ds[i*V+k]+ds[k*V+j];
            via[i*V+j] = via[i*V+k];
          }
        }
  }

  void read_turn_begin(istream& is,int t) {
    order_t o;
    o.t = t;     // FIXME
    int n;
    is >> n;
    for (int i=0; i<n; i++) {
      is >> o.id >> o.dest;
      o.dest --;
      os.push_back(o);
    }
    is >> n;
    for (int i=0; i<n; i++) {
      int oid;
      is >> oid;
      carrying[os[oid-1].dest].push_back(oid-1);
    }
  }

  vector<int> read_turn_end(istream& is) {
    string s;
    cin >> s;
    if (s.empty())
      cin >> s;      
    assert(s == "OK");
    int n;
    cin >> n;
    vector<int> delivered;
    for (int i=0; i<n; i++) {
      int oid;
      cin >> oid;
      delivered.push_back(oid-1);
    }

    return delivered;
  }
  
  void read_order(istream& is) {
    order_t o;
    int cnt = 0;
    for (int t=0; t<t_max; t++) {
      o.t = t;
      int n;
      is >> n;
      for (int i=0; i<n; i++) {
        cnt ++;
        is >> o.id >> o.dest;
        o.dest --;
        os.push_back(o);
      }
    }
    DBG(cnt);
  }

  vector<int> find_good_tour(const vector<int>& v,bool final=false) {
    // 2-opt TSP
    int N = v.size() + 1;
    
    vector<int> perm;
    perm.push_back(0);
    perm.insert(perm.end(), v.begin(), v.end());
    perm.push_back(0);

    int best_d = 0;
    for (int i=0; i<N; i++)
      best_d += ds[perm[i]*V+perm[i+1]];
      
    sa_t sa(1.0, 0.1);
    for (int lp=0; lp<10; lp++) {
      sa.set_progress(lp/9.0);      
      for (int a=0; a<N; a++) {
        int b = a+1;
        for (int c=b+1; c<N; c++) {
          int d = c+1;

          int cur = ds[perm[a]*V+perm[b]] + ds[perm[c]*V+perm[d]];
          int nxt = ds[perm[a]*V+perm[c]] + ds[perm[b]*V+perm[d]];
          if (final && d == N) {
            cur = ds[perm[a]*V+perm[b]];
            nxt = ds[perm[a]*V+perm[c]];
          }

          if (sa.acceptable(cur - nxt)) {
            reverse(perm.begin()+b, perm.begin()+d);
            best_d = best_d - cur + nxt;
          }
        }
      }
    }
    //reverse(perm.begin(), perm.end());

    vector<int> tour;
    {
      for (int i=perm.size()/3+1; i+1<2*perm.size()/3; i++) {
        if (ds[perm[i]] < ds[perm[i-1]] &&
            ds[perm[i]] < ds[perm[i+1]] &&
            ds[perm[i]] <= 10) {
          DBG(i);
          perm.insert(perm.begin()+i, 0);
          i += 10;
        }
      }

      
      for (int i=0; i+1+((final)?1:0)<perm.size(); i++) {
        int p = perm[i];
        int q = perm[i+1];
        while (p != q) {
          int v = via[p*V+q];
          for (int j=0; j<ds[p*V+v]; j++) {
            tour.push_back(v);
            //assert(tour.size() <= best_d);
          }

          p = v;
        }
      }
    }

    return tour;
  }
  
  vector<int> find_tsp(vector<int> perm) {
    // 2-opt TSP
    int N = perm.size() - 1;
    
    int best_d = 0;
    for (int i=0; i<N; i++)
      best_d += ds[perm[i]*V+perm[i+1]];
      
    sa_t sa(1.0, 0.1);
    for (int lp=0; lp<10; lp++) {
      sa.set_progress(lp/9.0);      
      for (int a=0; a<N; a++) {
        int b = a+1;
        for (int c=b+1; c<N; c++) {
          int d = c+1;

          int cur = ds[perm[a]*V+perm[b]] + ds[perm[c]*V+perm[d]];
          int nxt = ds[perm[a]*V+perm[c]] + ds[perm[b]*V+perm[d]];

          if (sa.acceptable(cur - nxt)) {
            reverse(perm.begin()+b, perm.begin()+d);
            best_d = best_d - cur + nxt;
          }
        }
      }
    }

    return perm;
  }
  
  vector<int> find_good_tour2(const map<int,vector<int>>& cs,const int t0,bool final=false) {
    // 2-opt TSP
    cerr << "find_good_tour2: " << cs.size() << " @"  << t0 << endl;
    int N = cs.size() + 1;
    
    vector<int> perm;
    perm.push_back(0);
    for (const auto& pa : cs) {
      perm.push_back(pa.first);
    }
    perm.push_back(0);

    perm = find_tsp(perm);

    auto calc_cost = [&](const vector<int>& perm) {
      int64_t cost = 0;
      int t = t0;
      for (int i=0; i<N; i++) {
        t += ds[perm[i]*V+perm[i+1]];
        if (perm[i+1] > 0) {
          for (const auto& oid : cs.at(perm[i+1]))
            cost += (int64_t)(t - os[oid].t)*(t - os[oid].t);
        }
      }
      //return cost + (int64_t)1000000*(t - t0)*(t - t0);
      return make_pair(t-t0, cost);
    };

    auto best_cost = calc_cost(perm);
      
    sa_t sa(1.0, 0.1);
    for (int lp=0; lp<10; lp++) {
      sa.set_progress(lp/9.0);
      bool modified = false;
      for (int a=0; a<N; a++) {
        int b = a+1;
        for (int c=b+1; c<N; c++) {
          int d = c+1;

          int cur = ds[perm[a]*V+perm[b]] + ds[perm[c]*V+perm[d]];
          int nxt = ds[perm[a]*V+perm[c]] + ds[perm[b]*V+perm[d]];
          if (nxt > cur)
            continue;

          reverse(perm.begin()+b, perm.begin()+d);
          auto cost = calc_cost(perm);

          //if (sa.acceptable(best_cost - nxt)) {
          if (cost < best_cost) {
            best_cost = cost;
          } else {
            reverse(perm.begin()+b, perm.begin()+d);
            modified = true;
          }
        }
      }
      if (!modified)
        break;
    }
    //reverse(perm.begin(), perm.end());

    vector<int> tour;
    {
      for (int i=perm.size()/3+1; i+1<2*perm.size()/3; i++) {
        if (ds[perm[i]] < ds[perm[i-1]] &&
            ds[perm[i]] < ds[perm[i+1]] &&
            ds[perm[i]] <= 10) {
          perm.insert(perm.begin()+i, 0);
          i += 10;
        }
      }

      
      for (int i=0; i+1+((final)?1:0)<perm.size(); i++) {
        int p = perm[i];
        int q = perm[i+1];
        while (p != q) {
          int v = via[p*V+q];
          for (int j=0; j<ds[p*V+v]; j++) {
            tour.push_back(v);
            //assert(tour.size() <= best_d);
          }

          p = v;
        }
      }
    }

    return tour;
  }
  
  vector<int> solve_tsp() {

    // 2-opt TSP
    vector<int> perm(V+1);
    for (int i=0; i<V; i++)
      perm[i] = i;
    perm[V] = 0;

    int best_d = 0;
    for (int i=0; i<V; i++)
      best_d += ds[perm[i]*V+perm[i+1]];
      
    sa_t sa(1.0, 0.1);
    for (int lp=0; lp<10; lp++) {
      sa.set_progress(lp/9.0);      
      for (int a=0; a<V; a++) {
        int b = a+1;
        for (int c=b+1; c<V; c++) {
          int d = c+1;

          int cur = ds[perm[a]*V+perm[b]] + ds[perm[c]*V+perm[d]];
          int nxt = ds[perm[a]*V+perm[c]] + ds[perm[b]*V+perm[d]];

          if (sa.acceptable(cur - nxt)) {
            reverse(perm.begin()+b, perm.begin()+d);
            best_d = best_d - cur + nxt;
          }
        }
      }
    }

    vector<int> tour;
    {
      for (int i=0; i+1<perm.size(); i++) {
        int p = perm[i];
        int q = perm[i+1];
        while (p != q) {
          int v = via[p*V+q];
          for (int j=0; j<ds[p*V+v]; j++) {
            tour.push_back(v+1);
            assert(tour.size() <= best_d);
          }

          p = v;
        }
      }
    }
    DBG(tour.size());

    vector<int> path;
    {
      int k = t_max / best_d;
      int t_wait = t_max - k*best_d;
      for (int i=0; i<t_wait; i++)
        path.push_back(-1);
      for (int i=0; i<k; i++)
        path.insert(path.end(), tour.begin(), tour.end());
    }

    return path;
  }

  void run_B(istream& is) {

    int64_t sum = 0;
    int cur = 0;
    vector<int> tour;
    for (int t=0; t<t_max; t++) {
      read_turn_begin(is, t);

      if (!tour.empty()) {
        int x = tour.back();
        tour.pop_back();
        cout << x+1 << endl;
      } else if (!carrying.empty()) {
        vector<int> v;
        for (const auto& pa : carrying)
          v.push_back(pa.first);
        //cerr << "find_good_tour: " << v.size() << " @"  << t << endl;
        //tour = find_good_tour(v);
        tour = find_good_tour2(carrying, t);
        reverse(tour.begin(), tour.end());
        int x = tour.back();
        tour.pop_back();
        cout << x+1 << endl;
      } else {
        cout << -1 << endl;
      }

      auto delivered = read_turn_end(is);
      if (!delivered.empty()) {
        int dest;
        for (int i=0; i<delivered.size(); i++) {
          int delay = t - os[delivered[i]].t + 1;
          sum += t_max*t_max - delay*delay;

          dest = os[delivered[i]].dest;
        }
        carrying.erase(dest);
      }
    }
    DBG(sum);
  }

  void run_A(istream& is) {
    read_order(is);

    vector<int> path;

    set<int> dests;
    for (const auto& o : os) {
      if (o.t > path.size() && dests.size() >= 1) {
        vector<int> v(dests.begin(), dests.end());
        auto tour = find_good_tour(v, o.t > 9500);
        cerr << "t: " << path.size() << " " << "dests: " << v.size() << ", tour: " << tour.size() << endl;
        path.insert(path.end(), tour.begin(), tour.end());

        dests.clear();
      }
      dests.insert(o.dest);
      while (path.size() < o.t)
        path.push_back(-2);
    }
    if (!dests.empty()) {
      vector<int> v(dests.begin(), dests.end());
      auto tour = find_good_tour(v, true);
      cerr << "t: " << path.size() << " " << "dests: " << v.size() << ", tour: " << tour.size() << endl;      
      path.insert(path.end(), tour.begin(), tour.end());
    }
    path.resize(t_max, -2);

    //draw(path);
    for (const auto& x : path)
      cout << x+1 << endl;
  }
  
  void run_A_or_B(istream& is) {
    auto ret = read_header(is);
    cerr << "problem: " << ret << endl;
    if (ret == 'A') {
      run_A(is);
    } else {
      run_B(is);
    }
  }

#ifdef LOCAL
  void draw(const vector<int>& path) {
    vector<int> deg(V);
    for (const auto& e : es) {
      deg[e.a] ++;
      deg[e.b] ++;
    }
    
    int a = 0;
    for (int i=0; i<V; i++)
      if (ds[i] > ds[a])
        a = i;
    int b = a;
    for (int i=0; i<V; i++)
      if (ds[a*V+i] > ds[a*V+b])
        b = i;
    int u = b;
    for (int i=0; i<V; i++)
      if (ds[a*V+i]+ds[b*V+i] > ds[a*V+u]+ds[b*V+u])
        u = i;
    int c = u;
    for (int i=0; i<V; i++)
      if (ds[a*V+i]+ds[b*V+i]+ds[u*V+i] > ds[a*V+c]+ds[b*V+c]+ds[u*V+c])
        c = i;
    int d = c;
    for (int i=0; i<V; i++)
      if (ds[a*V+i]+ds[b*V+i]+ds[c*V+i] > ds[a*V+d]+ds[b*V+d]+ds[c*V+d])
        d = i;

    vector<pair<double,double>> ps(V);
    int mx = 0;
    for (int i=0; i<V; i++) {
      int x0 = ds[a*V+i]+ds[c*V+i]-ds[a*V+c];
      int x1 = ds[d*V+i]+ds[b*V+i]-ds[d*V+b];
      ps[i].first = (double)x0/(x0+x1);
      
      int y0 = ds[a*V+i]+ds[d*V+i]-ds[a*V+d];
      int y1 = ds[c*V+i]+ds[b*V+i]-ds[c*V+b];
      ps[i].second = (double)y0/(y0+y1);
    }

    int beg = 0;
    for (int lp=0; ; lp++) {
      gdImagePtr img = gdImageCreateTrueColor(600, 600);
      gdImageFilledRectangle(img, 0, 0, 600, 600, 0xffffff);
      for (const auto& e : es) {
        int x1 = 10 + ps[e.a].first * 580;
        int y1 = 10 + ps[e.a].second * 580;
        int x2 = 10 + ps[e.b].first * 580;
        int y2 = 10 + ps[e.b].second * 580;

        gdImageLine(img, x1, y1, x2, y2, 0x888888);
      }
      int en = beg;
      for (int i=beg; i+1<path.size(); i++) {
        if (path[i] != 0 && path[i+1] == 0) {
          cerr << lp << " " << beg << "-" << i << endl;
          en = i+1;
          break;
        }
        if (path[i] < 0 || path[i+1] < 0)
          continue;
        if (path[i] == path[i+1])
          continue;
        int x1 = 10 + ps[path[i]].first * 580;
        int y1 = 10 + ps[path[i]].second * 580;
        int x2 = 10 + ps[path[i+1]].first * 580;
        int y2 = 10 + ps[path[i+1]].second * 580;

        gdImageLine(img, x1, y1, x2, y2, 0xff0000);
      }
      if (en == beg)
        break;
      beg = en;
      for (int i=0; i<V; i++) {
        int x = 10 + ps[i].first * 580;
        int y = 10 + ps[i].second * 580;
        char buf[256];
        sprintf(buf, "%d", i+1);
        gdImageString(img, gdFontSmall, x, y, (unsigned char*)buf, 0x000000);
      }

      char fname[256];
      sprintf(fname, "out%04d.png", lp);
      FILE *fp = fopen(fname, "wb");
      assert(fp);
      gdImagePng(img, fp);
      fclose(fp);
      gdImageDestroy(img);
    }
  }
#endif
};


int main()
{
  testcase_t tc;

  tc.run_A_or_B(cin);

  return 0;
}


Measured memory_bytes: 2640