Submission #1179327

#	Time	Username	Problem	Language	Result	Execution time	Memory
1179327		shirokito	Stove (JOI18_stove)	C++20	20 / 100	1102 ms	198044 KiB

stove

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define el '\n'

const int N = 5000 + 24;

int n, k;
ll a[N], dp[N][N];

void solve() {
    cin >> n >> k;
    for (int i = 1; i <= n; i++) cin >> a[i];

    memset(dp, 0x3f, sizeof(dp));

    dp[0][0] = 0;

    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= k; j++) {
            for (int i2 = 1; i2 <= i; i2++) {
                dp[i][j] = min(dp[i][j], dp[i2 - 1][j - 1] + (a[i] - a[i2] + 1));
            }
        }
    }

    cout << dp[n][k] << el;
}

signed main() {
    cin.tie(0) -> sync_with_stdio(0);

    #define task "file"
    if (fopen(task".inp", "r")) {
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }

    int T = 1; // cin >> T;
    while (T--) solve();
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:35:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:36:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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