#if !__INCLUDE_LEVEL__ #include __FILE__ // 0以上UINT_MAX(0xffffffff)以下の乱数を整数で返す(xorshift) static uint32_t random_xor() { static uint32_t x = 123456789; static uint32_t y = 362436069; static uint32_t z = 521288629; static uint32_t w = 88675123; uint32_t t; t = x ^ (x << 11); x = y; y = z; z = w; return w = (w ^ (w >> 19)) ^ (t ^ (t >> 8)); } // 0以上1未満の乱数を実数で返す static double random01() { return (random_xor() + 0.5) * (1.0 / UINT_MAX); } ll Euclid2d(ll x1, ll x2, ll y1, ll y2) { return (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2); }; int main() { int N, M; cin >> N >> M; vector Planet(N, vector(2)); REP(i, N) { cin >> Planet[i][0] >> Planet[i][1]; } vector Cluster(N); random_device seed_gen; mt19937_64 rnd(seed_gen()); uniform_int_distribution Clu_N(0, M - 1); vector Center(M, vector(2)); REP(i, N) { Cluster[i] = Clu_N(rnd); } auto start_clock = system_clock::now(); const static double START_TEMP = 1500; // 開始時の温度 const static double END_TEMP = 100; // 終了時の温度 const static double END_TIME = 0.9; // 終了時間(秒) double time = 0.0; // 経過時間(秒) do { vector ClusterNum(M, 0); vector tmp_center(M, vector(2)); REP(i, N) { tmp_center[Cluster[i]][0] += Planet[i][0]; tmp_center[Cluster[i]][1] += Planet[i][1]; ClusterNum[Cluster[i]] += 1; } REP(m, M) { if (ClusterNum[m] == 0) continue; tmp_center[m][0] /= ClusterNum[m]; tmp_center[m][1] /= ClusterNum[m]; } ll total = 0; ll tmp_total = 0; REP(i, N) { int c = Cluster[i]; ll D = Euclid2d(Planet[i][0], tmp_center[c][0], Planet[i][1], tmp_center[c][1]); total += D; REP(m, M) { ll dist = Euclid2d(Planet[i][0], tmp_center[m][0], Planet[i][1], tmp_center[m][1]); tmp_total += dist; if (dist < D) { D = dist; c = m; } } Cluster[i] = c; } const double progress_ratio = time / END_TIME; // 進捗。開始時が0.0、終了時が1.0 const double temp = START_TEMP + (END_TEMP - START_TEMP) * progress_ratio; const double probability = exp((double)(total - tmp_total) / temp); // 焼きなまし法の遷移確率 if (probability > random01()) { Center = tmp_center; } time = (duration_cast(system_clock::now() - start_clock) .count() * 1e-6); } while (time < END_TIME); REP(m, M) { cout << Center[m][0] << " " << Center[m][1] << endl; } vector> Out; int start = 0; vector Cplanet(8, vector(0)); REP(i, N) { Cplanet[Cluster[i]].emplace_back(i); if (i == 0) start = Cluster[i]; } Out.emplace_back(1, 1); Out.emplace_back(2, start + 1); REP(m, M) { int station = (m + start) % M; if (station == start) { REPE(j, 1, Cplanet[station].size() - 1) { Out.emplace_back(1, Cplanet[station][j] + 1); Out.emplace_back(2, station + 1); } } else { REP(j, Cplanet[station].size()) { Out.emplace_back(1, Cplanet[station][j] + 1); Out.emplace_back(2, station + 1); } } Out.emplace_back(2, (station + 1) % M + 1); } Out.emplace_back(1, 1); ll V = Out.size(); cout << V << "\n"; REP(v, V) { cout << Out[v].first << " " << Out[v].second << "\n"; } } #else #include #include using namespace std; using namespace chrono; using namespace atcoder; typedef long long ll; typedef unsigned long long ull; #define REP(i, n) for (ll i = 0; i < ll(n); i++) #define RREP(i, n) for (ll i = (ll)(n - 1); i >= 0; i--) #define REPE(i, l, n) for (ll i = l; i <= ll(n); i++) #define RREPE(i, l, n) for (ll i = ll(n); i >= l; i--) #define FORA(i, I) for (const auto &i : I) #define ALL(v) v.begin(), v.end() #define UQ(v) v.erase(unique(ALL(v)), v.end()) #define ACM(v) accumulate(ALL(v), 0LL) #define C cin >> #define P(str) cout << str << endl #define PLL pair #define PDBL pair #define TULL tuple #define VPLL vector #define VLL vector #define VVLL vector #define VVVLL vector #define VDBL vector #define VPDBL vector #define DLL deque #define INCANT cin.tie(nullptr), ios::sync_with_stdio(false) #define INT(...) \ int __VA_ARGS__; \ IN(__VA_ARGS__) #define LL(...) \ ll __VA_ARGS__; \ IN(__VA_ARGS__) #define STR(...) \ string __VA_ARGS__; \ IN(__VA_ARGS__) #define CHR(...) \ char __VA_ARGS__; \ IN(__VA_ARGS__) #define DBL(...) \ double __VA_ARGS__; \ IN(__VA_ARGS__) #define VEC(type, name, size) \ vector name(size); \ IN(name) #define VEC2(type, name1, name2, size) \ vector name1(size), name2(size); \ for (int i = 0; i < size; i++) IN(name1[i], name2[i]) #define VEC3(type, name1, name2, name3, size) \ vector name1(size), name2(size), name3(size); \ for (int i = 0; i < size; i++) IN(name1[i], name2[i], name3[i]) #define VV(type, name, h, w) \ vector> name(h, vector(w)); \ IN(name) template inline bool chmax(T &a, T b) { return ((a < b) ? (a = b, true) : (false)); } template inline bool chmin(T &a, T b) { return ((a > b) ? (a = b, true) : (false)); } int scan() { return getchar(); } void scan(int &a) { cin >> a; } void scan(long long &a) { cin >> a; } void scan(char &a) { cin >> a; } void scan(double &a) { cin >> a; } void scan(string &a) { cin >> a; } template void scan(pair &p) { scan(p.first), scan(p.second); } template void scan(vector &); template void scan(vector &a) { for (auto &i : a) scan(i); } template void scan(T &a) { cin >> a; } void IN() { } template void IN(Head &head, Tail &...tail) { scan(head); IN(tail...); } const long long INF = 1100000000000000000; const double EPS = 1e-9; #endif