Submission #483321

#	Time	Username	Problem	Language	Result	Execution time	Memory
483321		BERNARB01	Lottery (CEOI18_lot)	C++17	45 / 100	1396 ms	65540 KiB

lot

#include <bits/stdc++.h>

using namespace std;

const int N = 10004;
const int b = (int) 1e9 + 7;
const int mod = (int) 1e9 + 9;
const int b2 = (int) 1e9 + 9;
const int mod2 = (int) 1e9 + 21;

int n, l, a[N], q;
long long pb[N], h[N];
long long pb2[N], h2[N];
vector<int> v[N];

inline pair<int, int> get(int ql, int qr) {
  return {
    pb[n - ql] * 1LL * (h[qr + 1] - h[ql] + mod) % mod,
    pb2[n - ql] * 1LL * (h2[qr + 1] - h2[ql] + mod2) % mod2
  };
}

int mat(int s, int ss) {
  int k = 0;
  for (int i = 0; i < l; i++) {
    if (a[s + i] != a[ss + i]) {
      k += 1;
      continue;
    }
    if (get(s + i, s + l - 1) == get(ss + i, ss + l - 1)) {
      break;
    }
    int lb = 1, r = l + 1 - i;
    while (r - lb > 1) {
      int mid = (lb + r) >> 1;
      if (get(s + i, s + i + mid - 1) == get(ss + i, ss + i + mid - 1)) {
        lb = mid;
      } else {
        r = mid;
      }
    }
    i += lb;
    k += 1;
  }
  return k;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cin >> n >> l;
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  cin >> q;
  pb[0] = 1;
  pb2[0] = 1;
  for (int i = 1; i <= n; i++) {
    pb[i] = pb[i - 1] * 1LL * b % mod;
    pb2[i] = pb2[i - 1] * 1LL * b2 % mod2;
  }
  for (int i = 0; i < n; i++) {
    h[i + 1] = (pb[i] * 1LL * a[i] % mod + h[i]) % mod;
    h2[i + 1] = (pb2[i] * 1LL * a[i] % mod2 + h2[i]) % mod2;
  }
  for (int i = 0; i + l <= n; i++) {
    for (int j = i + 1; j + l <= n; j++) {
      int c = mat(i, j);
      v[i].push_back(c);
      v[j].push_back(c);
    }
  }
  for (int i = 0; i + l <= n; i++) {
    sort(v[i].begin(), v[i].end());
  }
  while (q--) {
    int k;
    cin >> k;
    for (int i = 0; i + l <= n; i++) {
      if (i > 0) {
        cout << " ";
      }
      cout << upper_bound(v[i].begin(), v[i].end(), k) - v[i].begin();
    }
    cout << '\n';
  }
  return 0;
}

• Subtask 1: 25 / 25
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20