제출 #1029329

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1029329		MDario	The short shank; Redemption (BOI21_prison)	C++17	15 / 100	2088 ms	12908 KiB

prison

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

#define F first
#define S second
typedef long long ll;

const string noyes[2] = {"NO", "YES"};
const ll INFLL = (1ll << 62);
const int INF = (1 << 30);
const int MAXN = 300'000;
const ll MOD = 1'000'000'007;

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  ll n, D, T;
  cin >> n >> D >> T;

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

  int dp[n][2];
  {
    int c = 0;
    ll last = INF;
    for (int i = 0; i < n; i++) {
      last = min(last + 1, a[i]);
      c += (last <= T);
      dp[i][0] = c;
    }
  }
  for (int i = 0; i < D; i++) {
    int cur = i & 1;
    for (int t = i; t < n; t++)
      dp[t][cur ^ 1] = INF;
    for (int t = i; t < n; t++) {
      int c = 0;
      ll last = INF;
      for (int e = t + 1; e < n; e++) {
        last = min(last + 1, a[e]);
        c += (last <= T);
        dp[e][cur ^ 1] = min(dp[e][cur ^ 1], dp[t][cur] + c);
      }
    }
  }

  cout << dp[n - 1][D & 1] << "\n";
  return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 0 / 10
• Subtask 3: 0 / 20
• Subtask 4: 0 / 10
• Subtask 5: 0 / 25
• Subtask 6: 0 / 20