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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#297434#4859. Poker Game: Constructionucup-team087#TL 1ms3792kbC++148.6kb2024-01-04 14:08:062024-01-04 14:08:06

Judging History

你现在查看的是最新测评结果

  • [2024-01-04 14:08:06]
  • 评测
  • 测评结果:TL
  • 用时:1ms
  • 内存:3792kb
  • [2024-01-04 14:08:06]
  • 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_TRIES = 20;
  mt19937_64 rng(58);
  vector<int> ans[3];
  for (int phase = 0; phase < 3; ++phase) {
    int numTries = 0;
    for (int iter = 0; ; ++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;
      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;
        if (++numTries >= NUM_TRIES) {
          break;
        }
      }
    }
  }
  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: 1ms
memory: 3740kb

input:

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

output:

YES 4S 5C TC JS 6S 6D
YES 4C 5C 5S QH TC TD
YES 4S 5S TH JS 5H 5C
YES 2S 6H 6D KD 8D 6S
YES 4C TS TC QH 7D TD
YES 3S TD KC KD QS QD
YES 2H 4S JH KC 3C 3H
YES AC 5S 4S 4H 5D 7C
YES 2H 4S JS KC JD JH

result:

ok 3 test cases (3 test cases)

Test #2:

score: 0
Accepted
time: 0ms
memory: 3772kb

input:

2
AS AH
AC AD
AS AH
2S 2H

output:

YES 2C QH 4H 4C 6C TS
NO
YES 4H 4C 6C 6S 2H 2S
YES 2D 2C AC AD TC TH
YES QH 2C 5H KC JH 2D
NO

result:

ok 2 test cases (2 test cases)

Test #3:

score: 0
Accepted
time: 1ms
memory: 3792kb

input:

1
3C 3D
3H 5S

output:

YES 3S 5C AC AH 4C 4H
YES 7C 7H 9S 5D 5C JD
YES 3S 5H 5D 5C 8S 8H

result:

ok 1 test cases (1 test case)

Test #4:

score: 0
Accepted
time: 1ms
memory: 3712kb

input:

1
9C KC
JC 5D

output:

YES 2S 6H 6D KD 8D 6S
YES 4C 5C 5S QH JS TD
YES 5S 9S JH KS 5H 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 3H 6H 7S KC 5D 5S
YES TH 9S 8H JS AH AC
NO
YES 2S 5D TD AS 5C 5H
YES 2H 5H TC AH 6S 6D
NO
YES 6D TH JH QS 2D 2H
YES 9S JS AC 5S TH TS
NO
YES 4H 5D TD AH 7C 7S
YES 4C 9H 9S TS TD 5S
NO
YES 3H 5D JH AH 9S 9C
YES 7C 7H 9S 5D 5C JD
NO
YES 9H TS JC QD AC AH
YES 7H KH JC 9C AC 5S
NO
YES 7C AS TH TS 2H...

result: