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#297427#4859. Poker Game: Constructionucup-team087#TL 6ms3744kbC++148.5kb2024-01-04 14:03:422024-01-04 14:03:43

Judging History

你现在查看的是最新测评结果

  • [2024-01-04 14:03:43]
  • 评测
  • 测评结果:TL
  • 用时:6ms
  • 内存:3744kb
  • [2024-01-04 14:03:42]
  • 提交

answer

#include <cassert>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <functional>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

using namespace std;

using Int = long long;

template <class T1, class T2> ostream &operator<<(ostream &os, const pair<T1, T2> &a) { return os << "(" << a.first << ", " << a.second << ")"; };
template <class T> ostream &operator<<(ostream &os, const vector<T> &as) { const int sz = as.size(); os << "["; for (int i = 0; i < sz; ++i) { if (i >= 256) { os << ", ..."; break; } if (i > 0) { os << ", "; } os << as[i]; } return os << "]"; }
template <class T> void pv(T a, T b) { for (T i = a; i != b; ++i) cerr << *i << " "; cerr << endl; }
template <class T> bool chmin(T &t, const T &f) { if (t > f) { t = f; return true; } return false; }
template <class T> bool chmax(T &t, const T &f) { if (t < f) { t = f; return true; } return false; }
#define COLOR(s) ("\x1b[" s "m")


int bsr(int a) {
  return 31 - __builtin_clz(a);
}

// Returns the submask containing highest k bits set.
// Returns -1 instead if  popcnt(a) < k.
int highBits(int a, int k) {
  int b = 0;
  for (int i = 0; i < k; ++i) {
    if (!a) return -1;
    b |= 1 << (31 - __builtin_clz(a));
    a &= ~b;
  }
  return b;
}

constexpr char RANKS_STR[16] = "0123456789TJQKA";
constexpr char SUITS_STR[5] = "CDHS";
enum Poker {
  HIGH_CARD,
  ONE_PAIR,
  TWO_PAIR,
  THREE_OF_A_KIND,
  STRAIGHT,
  FLUSH,
  FULL_HOUSE,
  FOUR_OF_A_KIND,
  STRAIGHT_FLUSH,
};
constexpr char POKER_STR[9][20] = {
  "HIGH_CARD",
  "ONE_PAIR",
  "TWO_PAIR",
  "THREE_OF_A_KIND",
  "STRAIGHT",
  "FLUSH",
  "FULL_HOUSE",
  "FOUR_OF_A_KIND",
  "STRAIGHT_FLUSH",
};

// Parses a card in a format as "2C" or "C2".
// Returns  card = 4 (rank - 2) + suit  (2 <= rank <= 14)
int parseCard(const char *str) {
  int r, s;
  for (s = 0; s < 4; ++s) if (SUITS_STR[s] == str[1]) break;
  if (s < 4) {
    // "2C"
    for (r = 2; r < 15; ++r) if (RANKS_STR[r] == str[0]) break;
    assert(r < 15);
  } else {
    // "C2"
    for (s = 0; s < 4; ++s) if (SUITS_STR[s] == str[0]) break;
    assert(s < 4);
    for (r = 2; r < 15; ++r) if (RANKS_STR[r] == str[1]) break;
    assert(r < 15);
  }
  return (r - 2) << 2 | s;
}

// Read a card from standard input.
int readCard() {
  static char buf[3];
  scanf("%s", buf);
  return parseCard(buf);
}

// Transforms a card in a format as "2C" (or "C2" if rev).
string cardString(int card, bool rev = false) {
  const int r = card / 4 + 2, s = card % 4;
  return rev ? (string() + SUITS_STR[s] + RANKS_STR[r]) : (string() + RANKS_STR[r] + SUITS_STR[s]);
}

// Returns the best poker hand with the tie-breaker in [0, 2^20).
//   cards must be distinct.
pair<Poker, int> poker(const vector<int> &cards) {
  assert(cards.size() >= 5);
  // a: ranks for all, bs[suit]: ranks, cs[rank]: count, ds[count]: ranks
  int a = 0, bs[4] = {}, cs[15] = {}, ds[5] = {};
  for (const int card : cards) { const int r = (card >> 2) + 2, s = card & 3; a |= bs[s] |= 1 << r; ++cs[r]; }
  for (int r = 2; r < 15; ++r) ds[cs[r]] |= 1 << r;
  // 8. STRAIGHT_FLUSH: highest (5 for A2345)
  {
    int straightFlush = 0;
    for (int s = 0; s < 4; ++s) straightFlush |= bs[s] & bs[s] << 1 & bs[s] << 2 & bs[s] << 3 & (bs[s] << 4 | bs[s] >> 14 << 5);
    if (straightFlush) return make_pair(STRAIGHT_FLUSH, bsr(straightFlush));
  }
  // 7. FOUR_OF_A_KIND: quadruple, other card
  if (ds[4]) {
    const int r4 = bsr(ds[4]);
    return make_pair(FOUR_OF_A_KIND, r4 << 4 | bsr(a ^ 1 << r4));
  }
  // 6. FULL_HOUSE: triple, pair
  if (ds[3]) {
    const int r3 = bsr(ds[3]);
    const int d = (ds[3] ^ 1 << r3) | ds[2];
    if (d) {
      const int r2 = bsr(d);
      return make_pair(FULL_HOUSE, r3 << 4 | r2);
    }
  }
  // 5. FLUSH: 5 highest cards
  {
    int flush = -1;
    for (int s = 0; s < 4; ++s) { const int h = highBits(bs[s], 5); if (flush < h) flush = h; }
    if (flush >= 0) return make_pair(FLUSH, flush);
  }
  // 4. STRAIGHT: highest (5 for A2345)
  {
    const int straight = a & a << 1 & a << 2 & a << 3 & (a << 4 | a >> 14 << 5);
    if (straight) return make_pair(STRAIGHT, bsr(straight));
  }
  // 3. THREE_OF_A_KIND: triple, 2 highest other cards
  if (ds[3]) {
    const int r3 = bsr(ds[3]);
    return make_pair(THREE_OF_A_KIND, r3 << 16 | highBits(a ^ 1 << r3, 2));
  }
  // 2. TWO_PAIR: larger pair, smaller pair, other card
  // 1. ONE_PAIR: pair, 3 highest other cards
  if (ds[2]) {
    const int r2 = bsr(ds[2]);
    const int d = ds[2] ^ 1 << r2;
    if (d) {
      const int r22 = bsr(d);
      return make_pair(TWO_PAIR, r2 << 8 | r22 << 4 | bsr(a ^ 1 << r2 ^ 1 << r22));
    }
    return make_pair(ONE_PAIR, r2 << 16 | highBits(a ^ 1 << r2, 3));
  }
  // 0. HIGH_CARD: 5 highest cards
  return make_pair(HIGH_CARD, highBits(a, 5));
}

////////////////////////////////////////////////////////////////////////////////


int simulate(int A0, int A1, int B0, int B1, const vector<int> &C) {
  constexpr int THREE[6 + 1] = {1, 3, 9, 27, 81, 243, 729};
  assert(C.size() == 6);
  vector<int> dp(THREE[6], 2);
  for (int p = THREE[6]; --p >= 0; ) {
    vector<int> xs(6);
    for (int i = 0; i < 6; ++i) xs[i] = p / THREE[i] % 3;
    int cnt[3] = {};
    for (int i = 0; i < 6; ++i) ++cnt[xs[i]];
    if (cnt[1] == 3 && cnt[2] == 3) {
      vector<int> as{A0, A1}, bs{B0, B1};
      for (int i = 0; i < 6; ++i) ((xs[i] == 1) ? as : bs).push_back(C[i]);
      const auto resA = poker(as);
      const auto resB = poker(bs);
      dp[p] = (resA > resB) ? +1 : (resA < resB) ? -1 : 0;
    } else if (cnt[1] == cnt[2]) {
      // A
      dp[p] = -1;
      for (int i = 0; i < 6; ++i) if (!xs[i]) chmax(dp[p], dp[p + THREE[i]]);
    } else if (cnt[1] == cnt[2] + 1) {
      // B
      dp[p] = +1;
      for (int i = 0; i < 6; ++i) if (!xs[i]) chmin(dp[p], dp[p + 2 * THREE[i]]);
    }
  }
  return dp[0];
}

void solve(int A0, int A1, int B0, int B1) {
// cerr<<COLOR("33")<<"[solve] "<<cardString(A0)<<" "<<cardString(A1)<<" "<<cardString(B0)<<" "<<cardString(B1)<<COLOR()<<endl;
  constexpr int NUM_ITERS = 1000;
  vector<int> ans[3];
  for (int phase = 0; phase < 3; ++phase) {
    for (int iter = 0; iter < NUM_ITERS; ++iter) {
      if (phase == 0 && ans[1 + (+1)].size()) break;
      if (phase == 1 && ans[1 + (-1)].size()) break;
      if (phase == 2 && ans[1 + 0   ].size()) break;
      const int seed = phase * NUM_ITERS + iter;
      mt19937_64 rng(seed);
      vector<int> C(6);
      if (phase == 0) {
        // random
        for (int i = 0; i < 6; ++i) {
          C[i] = rng() % 52;
        }
      } else if (phase == 1) {
        // in favor of Bob
        for (int i = 0; i < 6; ++i) {
          C[i] = (rng() & 1)
            ? (((rng() & 1) ? B1 : B0) ^ (rng() & 3))
            : (rng() % 52);
        }
      } else if (phase == 2) {
        // in favor of draw
        int cnt[13] = {};
        ++cnt[A0 >> 2];
        ++cnt[A1 >> 2];
        --cnt[B0 >> 2];
        --cnt[B1 >> 2];
        C.clear();
        for (int r = 0; r < 13; ++r) {
          for (int i = abs(cnt[r]); --i >= 0; ) {
            C.push_back(r << 2 | (rng() & 3));
          }
        }
        for (; C.size() < 6; ) {
          const int r = rng() % 13;
          C.push_back(r << 2 | (rng() & 3));
          C.push_back(r << 2 | (rng() & 3));
        }
        assert((int)C.size() == 6);
      } else {
        break;
      }
      set<int> ss{A0, A1, B0, B1};
      ss.insert(C.begin(), C.end());
      if (ss.size() == 10) {
        const int res = simulate(A0, A1, B0, B1, C);
        // cerr << res << " " << C << endl;
        ans[1 + res] = C;
      }
    }
  }
  for (const int z : {+1, -1, 0}) {
    if (ans[1 + z].size()) {
      printf("YES");
      for (const int c : ans[1 + z]) {
        printf(" %s", cardString(c).c_str());
      }
      puts("");
    } else {
      puts("NO");
    }
  }
}

int main() {
  for (int numCases; ~scanf("%d", &numCases); ) { for (int caseId = 1; caseId <= numCases; ++caseId) {
    const int A0 = readCard();
    const int A1 = readCard();
    const int B0 = readCard();
    const int B1 = readCard();
    
    solve(A0, A1, B0, B1);
  }
#ifndef LOCAL
  break;
#endif
  }
  return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3744kb

input:

3
JC 4H
TS 5D
7C 3C
7H TH
2D KH
4D JC

output:

YES 4S 5C TD JH KD KS
YES 9H 6S AD 6H 2C TH
YES 4C 5C TH JD TC TD
YES JD 4C 8H AC 8S 2D
YES AS AD 4D 6D KC TC
YES 3H TD TC TS KD KS
YES 2H 4H JS KC 6H 6C
YES JS 4S 6D 6H QH 7H
YES 2S 4S JD KS 4H 4C

result:

ok 3 test cases (3 test cases)

Test #2:

score: 0
Accepted
time: 6ms
memory: 3740kb

input:

2
AS AH
AC AD
AS AH
2S 2H

output:

YES TD 9H 3D 4D KS 7C
NO
YES QD QS 3C 3S 4D 4S
YES 2C 2D AC AD 8C 8H
YES 2C QS 2D 8C 4S TC
NO

result:

ok 2 test cases (2 test cases)

Test #3:

score: 0
Accepted
time: 1ms
memory: 3688kb

input:

1
3C 3D
3H 5S

output:

YES 3S 5C QH QD 9D 9C
YES QD KS 5D AS 5C TS
YES 3S 5D 6S 6H 5H 5C

result:

ok 1 test cases (1 test case)

Test #4:

score: 0
Accepted
time: 0ms
memory: 3704kb

input:

1
9C KC
JC 5D

output:

YES 5H 9D JD KD 2C 2H
YES 5H JH 6D 6H QH 7H
YES 5H 9H JH KH 5S 5C

result:

ok 1 test cases (1 test case)

Test #5:

score: -100
Time Limit Exceeded

input:

100000
6S 7C
KH 3S
5S 2D
AC TS
QD 6H
TC JD
5C AD
4S TH
AD 3S
JC 5S
TH QH
9S JH
AD JC
JS 7H
3S 9S
JC 6S
4D 7S
3S JH
AD JS
7D 4D
7D QS
QH JC
4H JS
7H TS
5D AD
3S 8D
AC TH
5D 3S
9H TD
TS 7D
7D 8C
AD 5H
7C QS
2C TH
QD AS
4S 2H
8D JS
9S 5H
2C TC
2D 5S
TD 2C
AS 2D
6H 6S
AC 2S
2C 8D
4C KS
JD 9D
2D AD
AS QH...

output:

YES 3D 6C 7S KD JS JH
YES 3H 6H 7S KS 3C 3D
NO
YES 2S 5D TD AD 2H 2C
YES 2C 5H TC AH 9D 9H
NO
YES 6C TD JH QC 9C 9S
YES 9C JS 2D TS JC 8H
YES 6D TD JS QC JH JC
YES 4H 5D TS AS KS KC
YES 9C TC 2D 4C TS 8H
YES 4C 5H TD AH 4H 4D
YES 3C 5H JS AH 9H 9S
YES 9C 5D 2D JS 5H 8H
YES 3H 5D JS AC JD JH
YES 9H T...

result: