제출 #470836

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
470836		jalsol	Stove (JOI18_stove)	C++17	20 / 100	1099 ms	98372 KiB

stove

// looking to shine brighter in this world...

#define TASK "stove"

#ifdef LOCAL
#include "local.h"
#else
#include <bits/stdc++.h>
#define debug(...)
#define DB(...)
#endif

using namespace std;

using ll = long long;
using ld = long double;

#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()

#define For(i, l, r) for (int i = (l); i <= (r); ++i)
#define Ford(i, r, l) for (int i = (r); i >= (l); --i)
#define Rep(i, n) For (i, 0, (n) - 1)
#define Repd(i, n) Ford (i, (n) - 1, 0)
#define Fe(...) for (auto __VA_ARGS__)

template <class C> inline int isz(const C& c) { return static_cast<int>(c.size()); }
template <class T> inline bool chmin(T& a, const T& b) { return (a > b) ? a = b, true : false; }
template <class T> inline bool chmax(T& a, const T& b) { return (a < b) ? a = b, true : false; }

const bool __initialization = []() {
    cin.tie(nullptr)->sync_with_stdio(false);
    if (fopen(TASK".inp", "r")) {
        (void)(!freopen(TASK".inp", "r", stdin));
        (void)(!freopen(TASK".out", "w", stdout)); }
    cout << setprecision(12) << fixed;
    return true;
}();

constexpr ld eps = 1e-9;
constexpr int inf = 1e9;
constexpr ll linf = 1e18;

// ================================================================================

constexpr int maxn = 5000 + 5;

int n, k;
int a[maxn];
int dp[maxn][maxn];

int go(int i, int j) {
    if (i > n) return 0;
    if (j >= k) return inf;

    int& ret = dp[i][j];
    if (ret != -1) return ret;

    ret = inf;

    For (p, i + 1, n + 1) {
        chmin(ret, go(p, j + 1) + a[p - 1] + 1 - a[i]);
    }

    return ret;
}

signed main() {
    cin >> n >> k;
    For (i, 1, n) cin >> a[i];

    memset(dp, -1, sizeof(dp));

    cout << go(1, 0) << '\n';

    return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50