Submission #1181123

#	Time	Username	Problem	Language	Result	Execution time	Memory
1181123		Born_To_Laugh	Stove (JOI18_stove)	C++17	50 / 100	132 ms	327680 KiB

stove

// Born_To_Laugh - Hughie Do
#include <bits/stdc++.h>
#define alle(sth) sth.begin(), sth.end()
using namespace std;
typedef long long ll;
[[maybe_unused]] const ll MOD = 998244353, INF = 1e18 + 7;
#define int ll
void solve(){
    int n, k;cin >> n >> k;
    vector<int> a(n+1, 0);
    for(int i=1; i<=n; ++i)cin >> a[i];
    vector<vector<int>> dp(n+1, vector<int> (k+1, INF));
    dp[0][0] = 0;
    for(int i=1; i<=n; ++i){
        for(int j=1; j<=k; ++j){
            dp[i][j] = min({
                dp[i-1][j] + a[i] - a[i-1],
                dp[i-1][j-1] + 1
            });
        }
    }
    int ans = INF;
    for(int j=1; j<=k; ++j){
        ans = min(ans, dp[n][j]);
    }
    cout << ans << '\n';
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
}

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