Submission #1331522

#	Time	Username	Problem	Language	Result	Execution time	Memory
1331522		kawhiet	Safety (NOI18_safety)	C++20	7 / 100	2101 ms	196204 KiB

safety

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

#define int long long

constexpr int N = 5001;
constexpr int inf = 1e18;

int a[N];
int dp[N][N];

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, h;
    cin >> n >> h;
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            dp[i][j] = inf;
        }
    }
    for (int i = 0; i < N; i++) {
        dp[0][i] = abs(i - a[0]);
    }
    for (int i = 1; i < n; i++) {
        for (int j = 0; j < N; j++) {
            for (int k = 0; k < N; k++) {
                if (abs(j - k) > h) continue;
                dp[i][j] = min(dp[i][j], dp[i - 1][k] + abs(a[i] - j));
            }
        }
    }
    int ans = inf;
    for (int i = 0; i < N; i++) {
        ans = min(ans, dp[n - 1][i]);
    }
    cout << ans << '\n';
    return 0;
}

• Subtask 1: 3 / 3
• Subtask 2: 4 / 4
• Subtask 3: 0 / 9
• Subtask 4: 0 / 5
• Subtask 5: 0 / 6
• Subtask 6: 0 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 22
• Subtask 9: 0 / 29