Submission #916456

#	Time	Username	Problem	Language	Result	Execution time	Memory
916456		duckindog	Painting Walls (APIO20_paint)	C++14	28 / 100	862 ms	2560 KiB

paint

//from duckindog wth depression
#include<bits/stdc++.h>

using namespace std;

//#define LOCAL

#ifndef LOCAL
#include "paint.h"
#endif // LOCAL

const int N = 500 + 10;
int f[N];

int minimumInstructions(int n, int m, int k, vector<int> C, vector<int> A, vector<vector<int>> B) {

  memset(f, 63, sizeof f);

  f[0] = 0;

  for (int l = 0; l < n - m + 1; ++l) {
    int r = l + m - 1;

    bool pass = 0;
    for (int x = 0; x < m; ++x) {
      bool good = 1;
      for (int i = l; i <= r; ++i) {
        int y = (i - l + x) % m;

        good &= binary_search(B[y].begin(), B[y].end(), C[i]);
      }
      pass |= good;
    }

    if (pass) {

      for (int i = l; i <= r; ++i)
        f[r + 1] = min(f[r + 1], f[i] + 1);
    }

  }
  return f[n] > 1e9 ? -1 : f[n];
}


#ifdef LOCAL
int32_t main() {
  cin.tie(0)->sync_with_stdio(0);

  if (fopen("duck.inp", "r")) {
    freopen("duck.inp", "r", stdin);
    freopen("duck.out", "w", stdout);
  }
  int n, m, k; cin >> n >> m >> k;
  vector<int> C, A;
  vector<vector<int>> B;
  for (int i = 1; i <= n; ++i) {
    int x; cin >> x;
    C.push_back(x);
  }
  for (int i = 1; i <= m; ++i) {
    int a; cin >> a; A.push_back(a);
    vector<int> vt;
    for (int j = 1; j <= a; ++j) {
      int x; cin >> x;
      vt.push_back(x);
    }
    sort(vt.begin(), vt.end());
    B.push_back(vt);

  }
  cout << minimumInstructions(n, m, k, C, A, B);

}
#endif // LOCAL

• Subtask 1: 0 / 12
• Subtask 2: 15 / 15
• Subtask 3: 13 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 37