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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#434875#8782. Schoolgirlsucup-team055#WA 4ms3616kbC++202.1kb2024-06-08 17:46:392024-06-08 17:46:39

Judging History

你现在查看的是最新测评结果

  • [2024-06-14 13:48:47]
  • hack成功,自动添加数据
  • (/hack/679)
  • [2024-06-14 13:05:18]
  • hack成功,自动添加数据
  • (/hack/678)
  • [2024-06-14 12:22:35]
  • hack成功,自动添加数据
  • (/hack/676)
  • [2024-06-08 17:46:39]
  • 评测
  • 测评结果:WA
  • 用时:4ms
  • 内存:3616kb
  • [2024-06-08 17:46:39]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for (int i = a; i < b; i++)

bool is_prime(int n) {
  for (int d = 2; d * d <= n; d++)
    if (n % d == 0)
      return false;
  return true;
}

int modpow(int a, int e, int p) {
  int r = 1;
  while (e) {
    if (e & 1)
      r = (long long)r * a % p;
    a = (long long)a * a % p;
    e >>= 1;
  }
  return r;
}

int find_proot(int p) {
  vector<int> ex;
  for (int i = 2; i < p - 1; i++) {
    if ((p - 1) % i == 0 && is_prime(i))
      ex.push_back((p - 1) / i);
  }
  for (int g = 2; g < p; g++) {
    bool ok = true;
    for (auto e : ex) {
      if (modpow(g, e, p) == 1) {
        ok = false;
        break;
      }
    }
    if (ok)
      return g;
  }
  return -1;
}

int main() {

  int n, m, k;
  cin >> n >> m >> k;

  int p = n + 1;
  while (!is_prime(p))
    p += n;

  const int g = find_proot(p);

  vector<int> mlog(p), mexp(p - 1);
  mlog[0] = -1;
  {
    int w = 1;
    rep(i, 0, p - 1) {
      mlog[w] = i;
      mexp[i] = w;
      w = (long long)w * g % p;
    }
  }

  vector<int> Ks(1);
  rep(i, 0, n) Ks.push_back(mexp[(p-1)/n*i]);
  rep(i, 0, m) {
    int a, b, c;
    cin >> a >> b >> c;
    int r = (Ks[a] + Ks[c] - Ks[b] + p) % p;
    Ks.push_back(r);
  }

  rep(qs, 0, k) {
    int r;
    cin >> r;
    vector<int> ords;
    int sum = 0;
    rep(i, 0, r) {
      int x;
      cin >> x;
      ords.push_back(Ks[x]);
      sum = (sum + Ks[x]) % p;
    }
    if (set(ords.begin(), ords.end()).size() == 1) {
      cout << "Yes\n";
      continue;
    }
    // b*r
    const int b = (long long)sum * modpow(r, p - 2, p) % p;
    bool ok = true;
    for (auto& e : ords) {
      e = (e + p - b) % p;
      if (e == 0) {
        ok = false;
        break;
      }
      e = mlog[e];
    }
    if (!ok) {
      cout << "No\n";
      continue;
    }
    sort(ords.begin(), ords.end());
    set<int> diff;
    rep(i, 0, r) {
      diff.insert((ords[(i + 1) % r] - ords[i] + (p - 1)) % (p - 1));
    }
    cout << (diff.size() == 1 ? "Yes" : "No") << "\n";
  }

  return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3488kb

input:

3 6 8
1 2 3
3 1 4
5 4 3
3 1 2
4 5 3
4 5 2
6 4 7 6 5 1 2
3 1 3 2
3 1 1 8
4 2 5 6 7
3 2 1 4
3 6 5 9
3 4 7 9
4 1 3 2 8

output:

Yes
Yes
Yes
No
No
No
Yes
No

result:

ok 8 token(s): yes count is 4, no count is 4

Test #2:

score: 0
Accepted
time: 0ms
memory: 3612kb

input:

12 0 1
12 12 11 10 9 8 7 6 5 4 3 2 1

output:

Yes

result:

ok YES

Test #3:

score: 0
Accepted
time: 4ms
memory: 3552kb

input:

3 0 6685
5 1 3 1 2 2
3 1 2 3
5 3 1 3 3 1
4 1 1 1 3
3 3 2 1
5 2 3 2 1 3
6 2 2 3 2 3 1
5 3 1 2 3 2
3 3 3 2
5 3 2 2 2 3
5 2 2 3 3 1
6 3 3 1 3 1 3
6 2 3 3 2 2 1
5 2 2 3 2 2
6 2 3 3 2 1 3
6 2 2 2 2 1 3
3 3 1 2
4 3 2 1 1
5 3 1 3 2 3
4 3 1 1 2
4 2 2 2 3
3 1 2 2
4 2 3 3 1
3 2 2 2
4 1 2 2 3
3 3 3 3
4 1 3 1 3...

output:

No
Yes
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
Yes
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
Yes
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
N...

result:

ok 6685 token(s): yes count is 680, no count is 6005

Test #4:

score: 0
Accepted
time: 3ms
memory: 3616kb

input:

3 1 6654
3 3 1
5 1 2 2 3 3
4 2 1 4 2
4 3 3 2 1
5 4 1 2 1 4
3 1 4 4
6 3 1 2 1 1 4
4 1 2 1 2
5 1 4 3 4 4
4 2 4 4 1
6 3 2 4 2 4 3
3 1 2 1
3 3 2 4
5 4 3 2 1 2
4 3 2 2 1
4 2 1 4 2
4 4 4 2 1
6 2 1 4 2 2 3
4 4 1 2 1
5 2 2 3 3 3
4 2 2 1 4
3 4 3 1
6 4 2 2 4 2 2
6 1 4 1 1 2 2
5 1 4 1 4 3
6 3 2 1 4 1 2
5 2 4 3...

output:

No
No
No
No
Yes
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
Yes
Yes
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
Yes
No
Yes
No
Yes
No
Yes
Yes
No
No
Yes
No
Yes
...

result:

ok 6654 token(s): yes count is 768, no count is 5886

Test #5:

score: -100
Wrong Answer
time: 3ms
memory: 3536kb

input:

3 3 6656
2 3 2
1 2 1
2 3 4
5 3 1 2 3 5
5 3 2 2 2 2
6 5 3 1 4 1 1
5 3 1 5 5 4
3 1 3 6
6 6 3 3 1 4 6
4 2 2 3 1
3 6 4 3
3 5 1 4
3 4 1 5
4 4 2 4 5
3 4 3 5
3 6 4 6
4 3 1 6 5
6 1 1 3 6 1 1
3 4 6 3
6 3 2 2 4 1 6
5 6 2 3 2 1
3 5 3 3
6 1 3 1 2 1 6
4 3 1 3 2
4 4 5 6 3
6 5 6 3 1 4 3
6 5 1 2 4 3 6
3 4 3 5
3 5 4...

output:

No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
N...

result:

wrong answer expected NO, found YES [8th token]