Submission #844420

#	Time	Username	Problem	Language	Result	Execution time	Memory
844420		vjudge1	Holding (COCI20_holding)	C++17	22 / 110	27 ms	25176 KiB

holding

#include <bits/stdc++.h>
using namespace std;
int dp[105][10005],dp2[105][10005];
int dplast[105][10005],dp2last[105][10005];

int dps[105][10005], dps2[105][10005];



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

    int n, left, right, k; cin >> n >> left >> right >> k;

    vector<int> a(n+1);

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

    int sum = 0;
    for (int i = left; i <= right; i++) sum+=a[i];

    for(int l=0; l<100+5; l++){
        for(int j=0; j<=k; j++){
            dp[l][j]=dp2[l][j]=sum;
            dplast[l][j]=dp2last[l][j]=sum;

            dps[l][j]=dps2[l][j]=sum;
        }
    }

    int ans=sum;

    for(int i=1; i<left; i++){
        for(int l=left; l<=right; l++){
            for(int j=l-i; j<=k; j++){
                dp[l][j]=min(dp[l][j], dplast[l-1][j-(l-i)]-a[l]+a[i]);
                dp[l][j] = min(dp[l][j], dp[l-1][j]);
                ans=min(ans, dp[l][j]);

                dps[l][j]=min(dps[l][j], dp[l][j]);
            }
        }

        swap(dplast, dp);

    }


    for(int i=n; i>right; i--){
        for(int l=right; l>=left; l--){
            for(int j=i-l; j<=k; j++){
                dp2[l][j] = min(dp2[l][j], dp2last[l+1][j-(i-l)]-a[l]+a[i]);
                dp2[l][j] = min(dp2[l][j], dp2[l+1][j]);
                ans=min(ans, dp2[l][j]);

                dps2[l][j]=min(dps2[l][j], dp2[l][j]);
            }
        }

        swap(dp2last, dp2);

    }

    for(int i=0; i<n; i++){
        for(int j=1; j<=k; j++) dps[i][j]=min(dps[i][j], dps[i][j-1]);
                    for(int j=1; j<=k; j++) dps2[i][j]=min(dps[i][j], dps[i][j-1]);

    }

    
    for(int i=left; i<right; i++){
        for(int j=1; j<k; j++)
        ans=min(ans, dps[left][j]+dps2[left+1][k-j]);
    }

    cout << ans;

}

• Subtask 1: 22 / 22
• Subtask 2: 0 / 33
• Subtask 3: 0 / 33
• Subtask 4: 0 / 22