Submission #1004341

#	Time	Username	Problem	Language	Result	Execution time	Memory
1004341		vjudge1	Kitchen (BOI19_kitchen)	C++17	9 / 100	1 ms	856 KiB

kitchen

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define INF 1000000000
int main(){
    ll n, m, k, su = 0, bsu = 0;
    cin>>n>>m>>k;
    bool ca = 0;
    if (m < k){
        ca = 1;
    }
    vector<ll> a(n + 1), b(m + 1);
    for (int i = 0;  i< n; i++){
        cin>>a[i + 1];
        su += a[i + 1];
        if (a[i + 1] < k){
            ca = 1;
        }
    }
    for (int i = 0; i < m; i++){
        cin>>b[i + 1];
        bsu += b[i + 1];
    }
    if (ca || bsu < su){
        cout<<"Impossible";
        return 0;
    }
    ll ans = INF;
    if (m == 1){
        ans = b[1] - su;
    }
    else if (m == 2){
        if (k == 1 && max(b[1], b[2]) >= su){
            if (b[1] >= su){
                ans = min(ans, b[1] - su);
            }
            if (b[2] >= su){
                ans = min(ans, b[2] - su);
            }
        }
        else{
            ans = bsu - su;
        }
    }
    else{
        vector<vector<ll>> dp(m + 1, vector<ll>(m + 1, 0));
        for (int i = 1; i <= m; i++){
            for (int j = 1; j <= i; j++){
                ll va1 = dp[i - 1][j - 1] + b[j], va2 = dp[i - 1][j];
                if (va1 > va2){
                    swap(va1, va2);
                }
                if (dp[i][j] < su){
                    dp[i][j] = max(dp[i][j], va2);
                }
                if (dp[i][j] >= su && va1 >= su){
                    dp[i][j] = min(dp[i][j], va1);
                }
                else if (dp[i][j] >= su && va2 >= su){
                    dp[i][j] = min(dp[i][j], va2);
                }
            }
        }
        ll ans = INF;
        for (int i = 1; i <= m; i++){
            if (dp[m][i] >= su) ans = min(ans, dp[m][i] - su);
        }
    }
    cout<<ans;
}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 22
• Subtask 3: 0 / 20
• Subtask 4: 0 / 21
• Subtask 5: 0 / 28