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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#465223#8830. Breaking Baducup-team1198#WA 1ms7916kbC++203.7kb2024-07-06 19:03:542024-07-06 19:03:54

Judging History

你现在查看的是最新测评结果

  • [2024-07-06 19:03:54]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:7916kb
  • [2024-07-06 19:03:54]
  • 提交

answer

#include <map>
#include <set>
#include <array>
#include <cmath>
#include <deque>
#include <bitset>
#include <random>
#include <string>
#include <vector>
#include <cassert>
#include <complex>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <unordered_map>
#include <unordered_set>

using namespace std;

const int MAXN = 1e3 + 100;
int a[MAXN][MAXN];

int shift(char mask, int d) {
  return ((mask << d) & 31) | (mask >> (5 - d));
}

int add(int a, int b) {
  return a + b >= 5 ? a + b - 5 : a + b;
}

int id[MAXN][MAXN];

char dp[MAXN * 12][64][64];

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);

  int n;
  cin >> n;
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < n; ++j) {
      cin >> a[i][j];
    }
  }

  int cnt = 0;
  while (cnt < 4) {
    int L = 2 * cnt;
    bool found = false;
    for (int i = L + 1; i < n && !found; ++i) {
      for (int j = L + 1; j < n && !found; ++j) {
        if (add(a[i][j], a[L][L]) != add(a[i][L], a[L][j])) {
          found = true;
          for (int t = 0; t < n; ++t) {
            swap(a[i][t], a[L + 1][t]);
          }
          for (int t = 0; t < n; ++t) {
            swap(a[t][j], a[t][L + 1]);
          }
        }
      }
    }
    if (!found) break;
    ++cnt;
  }

  if (cnt >= 4) {
    cout << "YYYYY\n";
    return 0;
  }

  int cur_id = 0;
  for (int i = n; i >= 2 * cnt; --i) {
    for (int j = n; j >= 2 * cnt; --j) {
      if (abs(i - j) <= 2 * cnt) {
        id[i][j] = cur_id++;
      }
    }
  }
  for (int i = 0; i <= n; ++i) {
    for (int j = 0; j <= n; ++j) {
      if (abs(i - j) > 2 * cnt) {
        id[i][j] = cur_id;
      }
    }
  }

  dp[id[n][n]][0][0] = 1;
  for (int i = n; i >= 2 * cnt; --i) {
    for (int j = n; j >= 2 * cnt; --j) {
      /// cerr << i << " " << j << endl;
      if (abs(i - j) > 2 * cnt) continue;
      if (i == n && j == n) continue;
      for (int maskr = 0; maskr < (1 << (2 * cnt)); ++maskr) {
        for (int maskc = 0; maskc < (1 << (2 * cnt)); ++maskc) {
          int I = id[i][j];
          dp[I][maskr][maskc] = 0;
          if (i != n && j != n) {
            dp[I][maskr][maskc] |= shift(dp[id[i + 1][j + 1]][maskr][maskc], a[i][j]);
          }
          if (i != n) {
            for (int c = 0; c < 2 * cnt; ++c) {
              if (maskc & (1 << c)) {
                dp[I][maskr][maskc] |= shift(dp[id[i + 1][j]][maskr][maskc ^ (1 << c)], a[i][c]);
              }
            }
          }
          if (j != n) {
            for (int r = 0; r < 2 * cnt; ++r) {
              if (maskr & (1 << r)) {
                dp[I][maskr][maskc] |= shift(dp[id[i][j + 1]][maskr ^ (1 << r)][maskc], a[r][i]);
              }
            }
          }
        }
      }
    }
  }

  int I = id[2 * cnt][2 * cnt];

  char ans = 0;
  for (int maskr = 0; maskr < (1 << (2 * cnt)); ++maskr) {
    for (int maskc = 0; maskc < (1 << (2 * cnt)); ++maskc) {
      if (dp[I][maskr][maskc] == 0) continue;
      vector<int> rows;
      vector<int> cols;
      for (int i = 0; i < 2 * cnt; ++i) {
        if (!(maskr & (1 << i))) {
          rows.push_back(i);
        }
        if (!(maskc & (1 << i))) {
          cols.push_back(i);
        }
      }
      do {
        int sum = 0;
        for (int i = 0; i < (int)cols.size(); ++i) {
          sum = add(sum, a[rows[i]][cols[i]]);
        }
        ans |= shift(dp[I][maskr][maskc], sum);
      } while (next_permutation(cols.begin(), cols.end()));
    }
  }

  for (int i = 0; i < 5; ++i) {
    if (ans & (1 << i)) {
      cout << "Y";
    } else {
      cout << "N";
    }
  }

  
  return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 7644kb

input:

2
0 4
4 0

output:

YNNYN

result:

ok "YNNYN"

Test #2:

score: 0
Accepted
time: 1ms
memory: 7916kb

input:

2
1 1
1 1

output:

NNYNN

result:

ok "NNYNN"

Test #3:

score: 0
Accepted
time: 1ms
memory: 7876kb

input:

4
0 0 1 0
0 1 0 1
0 0 0 0
1 1 0 0

output:

YYYYN

result:

ok "YYYYN"

Test #4:

score: -100
Wrong Answer
time: 1ms
memory: 7728kb

input:

4
0 0 0 1
0 1 0 1
1 0 0 0
0 1 0 0

output:

YYYYY

result:

wrong answer 1st words differ - expected: 'YYYYN', found: 'YYYYY'