#include "testlib.h" #include using namespace std; struct Card { int color, value; Card(): color(-1), value(-1) {} Card(int _color, int _value): color(_color), value(_value) {} }; struct State { Card alice[2], bob[2]; Card community[5]; }; enum class ActionType { CHECK, CALL, RAISE, FOLD }; namespace { // hand evaluation enum class HandType { StraightFlush = 8, Four = 7, FullHouse = 6, Flush = 5, Straight = 4, Three = 3, TwoPair = 2, Pair = 1, HighCard = 0 }; struct Score { HandType w; int hash_value; Score() : w(HandType::HighCard), hash_value(0) {} Score(HandType _w, vector& A) { w = _w; hash_value = 0; for (int i = 0; i < (int)A.size(); ++i) { hash_value = hash_value * 20 + A[i]; } } }; bool operator<(const Score& k1, const Score& k2) { if (k1.w != k2.w) return k1.w < k2.w; return k1.hash_value < k2.hash_value; } struct CardCmp { bool operator () (const Card& x, const Card& y) const { return x.value < y.value || (x.value == y.value && x.color < y.color); } }; bool is_card_used[14][5]; int used_num[14]; bool isValidCard(const Card& card) { return 1 <= card.value && card.value <= 13 && 0 <= card.color && card.color <= 3; } void assertCompleteStateOrFail(const State& s) { static set S; S.clear(); for (int i = 0; i < 2; ++i) { ensuref(isValidCard(s.alice[i]), "Internal error: invalid Alice card in complete state"); ensuref(S.find(s.alice[i]) == S.end(), "Internal error: duplicate card in complete state"); S.insert(s.alice[i]); ensuref(isValidCard(s.bob[i]), "Internal error: invalid Bob card in complete state"); ensuref(S.find(s.bob[i]) == S.end(), "Internal error: duplicate card in complete state"); S.insert(s.bob[i]); } for (int i = 0; i < 5; ++i) { ensuref(isValidCard(s.community[i]), "Internal error: invalid community card in complete state"); ensuref(S.find(s.community[i]) == S.end(), "Internal error: duplicate card in complete state"); S.insert(s.community[i]); } } // forward rngs mt19937_64 rng_sampling; // for RATE queries and BobAction sampling bool checkStraightFlush(Score& res) { for (int c = 0; c < 4; ++c) { for (int i = 9; i >= 0; --i) { int flag = 0; for (int j = 0; j <= 4; ++j) if (!is_card_used[i + j][c]) { flag = 1; break; } if (flag) continue; vector A; for (int j = 4; j >= 0; j--) A.push_back(i + j); res = Score(HandType::StraightFlush, A); return true; } } return false; } bool checkFour(Score& res) { for (int i = 13; i; i--) if (used_num[i] == 4) { vector A; for (int k = 0; k < 4; k++) A.push_back(i); for (int j = 13; j; j--) if (i != j && used_num[j]) { A.push_back(j); res = Score(HandType::Four, A); return true; } } return false; } bool checkFullHouse(Score &res) { for (int i = 13; i; i--) if (used_num[i] == 3) { vector A; for (int k = 0; k < 3; k++) A.push_back(i); for (int j = 13; j; j--) if (i != j && used_num[j] >= 2) { for (int k = 0; k < 2; k++) A.push_back(j); res = Score(HandType::FullHouse, A); return true; } } return false; } bool checkFlush(Score &res) { for (int c = 0; c < 4; c++) { vector A; for (int i = 13; i; i--) if (is_card_used[i][c]) { A.push_back(i); if ((int)A.size() == 5) { res = Score(HandType::Flush, A); return true; } } } return false; } bool checkStraight(Score &res) { for (int i = 9; i >= 0; i--) { int flag = 0; for (int j = 4; j >= 0; j--) if (!used_num[i + j]) { flag = 1; break; } if (flag) continue; vector A; for (int j = 4; j >= 0; j--) A.push_back(i + j); res = Score(HandType::Straight, A); return true; } return false; } bool checkThree(Score &res) { for (int i = 13; i; i--) if (used_num[i] >= 3) { vector A; for (int k = 0; k < 3; k++) A.push_back(i); for (int j = 13; j; j--) if (used_num[j] && j != i) { A.push_back(j); if ((int)A.size() == 5) { res = Score(HandType::Three, A); return true; } } } return false; } bool checkTwoPair(Score &res) { for (int i = 13; i; i--) if (used_num[i] >= 2) { vector A; for (int k = 0; k < 2; k++) A.push_back(i); for (int j = i - 1; j; j--) if (used_num[j] >= 2) { for (int k = 0; k < 2; k++) A.push_back(j); for (int x = 13; x; x--) if (used_num[x] && x != i && x != j) { A.push_back(x); res = Score(HandType::TwoPair, A); return true; } } } return false; } bool checkPair(Score &res) { for (int i = 13; i; i--) if (used_num[i] >= 2) { vector A; for (int k = 0; k < 2; k++) A.push_back(i); for (int j = 13; j; j--) if (used_num[j] && j != i) { A.push_back(j); if ((int)A.size() == 5) { res = Score(HandType::Pair, A); return true; } } } return false; } void getHighCard(Score &res) { vector A; for (int i = 13; i; i--) if (used_num[i]) { A.push_back(i); if ((int)A.size() == 5) { res = Score(HandType::HighCard, A); return; } } } Score getScoreForHand(vector& A) { memset(is_card_used, 0x00, sizeof is_card_used); memset(used_num, 0x00, sizeof used_num); for (int i = 0; i < (int)A.size(); ++i) { is_card_used[A[i].value][A[i].color] = true; ++used_num[A[i].value]; } used_num[0] = used_num[13]; for (int i = 0; i <= 4; i++) { is_card_used[0][i] = is_card_used[13][i]; } Score res; if (checkStraightFlush(res)) return res; if (checkFour(res)) return res; if (checkFullHouse(res)) return res; if (checkFlush(res)) return res; if (checkStraight(res)) return res; if (checkThree(res)) return res; if (checkTwoPair(res)) return res; if (checkPair(res)) return res; getHighCard(res); return res; } int getResult(const State& s) { vector alice, bob; assertCompleteStateOrFail(s); for (int i = 0; i < 2; ++i) { alice.push_back(s.alice[i]); bob.push_back(s.bob[i]); } for (int i = 0; i < 5; ++i) { alice.push_back(s.community[i]); bob.push_back(s.community[i]); } Score alice_score = getScoreForHand(alice); Score bob_score = getScoreForHand(bob); if (alice_score < bob_score) return -1; if (bob_score < alice_score) return 1; return 0; } pair getRatesBySampling(const State& s, int t) { memset(is_card_used, 0x00, sizeof is_card_used); auto deal_with_card = [&](const Card& c) { if (isValidCard(c)) { ensuref(!is_card_used[c.value][c.color], "Internal error: duplicate card in partial state"); is_card_used[c.value][c.color] = true; } }; for (int i = 0; i < 2; ++i) { deal_with_card(s.alice[i]); deal_with_card(s.bob[i]); } for (int i = 0; i < 5; ++i) { deal_with_card(s.community[i]); } vector remaining_card; for (int i = 1; i <= 13; ++i) { for (int j = 0; j < 4; ++j) { if (!is_card_used[i][j]) { remaining_card.emplace_back(j, i); } } } int win_num = 0, draw_num = 0; for (int _ = 0; _ < t; ++_) { State complete_s = s; shuffle(remaining_card.begin(), remaining_card.end(), rng_sampling); int ind = 0; for (int i = 0; i < 2; ++i) { if (!isValidCard(s.alice[i])) { complete_s.alice[i] = remaining_card[ind++]; } if (!isValidCard(s.bob[i])) { complete_s.bob[i] = remaining_card[ind++]; } } for (int i = 0; i < 5; ++i) { if (!isValidCard(s.community[i])) { complete_s.community[i] = remaining_card[ind++]; } } auto result = getResult(complete_s); if (result == 1) { ++win_num; } else if (result == 0) { ++draw_num; } } return make_pair(1.0 * win_num / t, 1.0 * draw_num / t); } State getPartialState(const State& complete_state, int round_index_0based, int player /*0 alice sees, 1 bob sees*/) { // round_index_0based: 0 -> preflop (k=0), 1 -> flop (k=3), 2 -> turn (k=4), 3 -> river (k=5) int num = 0; if (round_index_0based == 0) num = 0; else num = 2 + round_index_0based; // 1->3, 2->4, 3->5 State s = complete_state; for (int i = num; i < 5; ++i) { s.community[i] = Card(); } if (player == 0) { // hide Bob's cards from Alice for (int i = 0; i < 2; ++i) { s.bob[i] = Card(); } } else { // hide Alice's cards from Bob for (int i = 0; i < 2; ++i) { s.alice[i] = Card(); } } return s; } pair BobAction(const State& s /*partial from Bob's view*/, int rise, int pool_value) { pair rates = getRatesBySampling(s, 100); double w = rates.first, d = rates.second; // Bob's expected value if she calls now (relative to current point): // win: pool + rise; tie: pool/2; lose: -rise double expected_call = -w * rise + d * (pool_value / 2.0) + (1 - w - d) * (pool_value + rise); if (expected_call > 0) return make_pair(ActionType::CALL, 0); return make_pair(ActionType::FOLD, 0); } // helper for formatting/printing doubles string fmt2(const string& head, double a, double b) { ostringstream oss; oss.setf(std::ios::fixed); oss< generate_deck_from_seed(uint64_t seed) { vector deck; deck.reserve(52); for (int v = 1; v <= 13; ++v) { for (int s = 0; s < 4; ++s) { deck.emplace_back(s, v); } } mt19937_64 eng(seed); shuffle(deck.begin(), deck.end(), eng); // sanity uniqueness set> S; for (auto &c: deck) { ensuref(1 <= c.value && c.value <= 13 && 0 <= c.color && c.color <= 3, "Internal error: bad card generated"); ensuref(S.insert({c.color, c.value}).second, "Internal error: duplicate in generated deck"); } return deck; } int compute_points_from_W(double W) { // piecewise linear to integer points in [0,100] if (W <= 8.0) return 0; if (W <= 11.0) { double x = 13.3 * (W - 8.0); // 0 -> 40 over (8,11] return (int) llround(x); } if (W <= 14.0) { double x = 40.0 + 14.0 * (W - 11.0); // 40 -> 82 over (11,14] return (int) llround(x); } if (W <= 20.0) { double x = 82.0 + 3.0 * (W - 14.0); // 82 -> 100 over (14,20] return (int) llround(x); } return 100; } double compute_points_unbounded(double W) { if (W <= 8.0) return 0.0; if (W <= 11.0) { double x = 13.3 * (W - 8.0); return (double) llround(x); } if (W <= 14.0) { double x = 40.0 + 14.0 * (W - 11.0); return (double) llround(x); } double x = 82.0 + 3.0 * (W - 14.0); return (double) llround(x); } int main(int argc, char* argv[]) { registerInteraction(argc, argv); // Read public G from .in int G = inf.readInt(); println(G); // send G to contestant // Read hidden seeds from .ans long long sampling_seed = ans.readLong(); // global sampling seed int G_ans = ans.readInt(); ensuref(G_ans >= G, "ANS file has fewer hand seeds (%d) than required hands (%d)", G_ans, G); vector hand_seeds(G_ans); for (int i = 0; i < G_ans; ++i) { hand_seeds[i] = (uint64_t) ans.readLong(); } rng_sampling.seed((uint64_t)sampling_seed); const long long RATE_BUDGET = 3000000LL; long long used_rate_budget = 0; auto print_state = [&](int h, int r, int a, int b, int P, int k, const State& complete_state) { // STATE h r a b P k { ostringstream oss; oss<<"STATE "<int { int result = getResult(complete_state); if (result == 1) return (a + P) - 100; if (result == 0) return (a + P / 2) - 100; return a - 100; }; long long total_delta_sum = 0; for (int h = 1; h <= G; ++h) { // Generate deck for this hand vector deck = generate_deck_from_seed(hand_seeds[h-1]); State complete_state; // deal: Alice[0..1], Bob[0..1], Community[0..4] complete_state.alice[0] = deck[0]; complete_state.alice[1] = deck[1]; complete_state.bob[0] = deck[2]; complete_state.bob[1] = deck[3]; for (int i = 0; i < 5; ++i) { complete_state.community[i] = deck[4 + i]; } int a = 100, b = 100, P = 10; bool hand_ended = false; for (int r = 1; r <= 4 && !hand_ended; ++r) { int k = 0; if (r == 1) k = 0; else if (r == 2) k = 3; else if (r == 3) k = 4; else if (r == 4) k = 5; // send state print_state(h, r, a, b, P, k, complete_state); // handle RATE queries and then one ACTION while (true) { string cmd = ouf.readToken(); if (cmd == "-1") { quitp(0.0, "Contestant terminated with -1"); } else if (cmd == "RATE") { long long t = ouf.readLong(1, (long long)1e9); if (used_rate_budget + t > RATE_BUDGET) { println("-1"); quitp(0.0, "RATE budget exceeded. Used %lld, requested %lld, budget %lld", used_rate_budget, t, RATE_BUDGET); } State partial_for_alice = getPartialState(complete_state, r - 1, 0); auto rates = getRatesBySampling(partial_for_alice, (int)t); used_rate_budget += t; println(fmt2("RATES", rates.first, rates.second)); } else if (cmd == "ACTION") { string act = ouf.readToken(); if (act == "CHECK") { // Bob always checks println("OPP CHECK"); if (r == 4) { int delta = showdown_delta(a, P, complete_state); total_delta_sum += delta; { ostringstream oss; oss<<"RESULT "< a) { quitf(_wa, "Invalid RAISE amount x=%d; must be in [1, %d]", x, a); } // Bob decision before updating stacks/pot State bob_view = getPartialState(complete_state, r - 1, 1); auto bob_dec = BobAction(bob_view, x, P); if (bob_dec.first == ActionType::FOLD) { println("OPP FOLD"); // If Bob folds, final stack for Alice: a + P (independent of x) int delta = a + P - 100; total_delta_sum += delta; { ostringstream oss; oss<<"RESULT "<