Submission #207089

#	Time	Username	Problem	Language	Result	Execution time	Memory
207089		brcode	Kitchen (BOI19_kitchen)	C++14	100 / 100	167 ms	104056 KiB

kitchen

#include <iostream>
#include <bits/stdc++.h>

using namespace std;
const int MAXN = 310;
const int MAXN2 = 310*310;

int a[MAXN];
int b[MAXN];
int dp[MAXN2][MAXN];
int main(){
    int n,m,k;
    cin>>n>>m>>k;
    int holdsum = 0;
    int holdsum2 = 0;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        holdsum+=a[i];
        if(a[i]<k){
            cout<<"Impossible"<<endl;
            return 0;
        }
    }
    for(int i=1;i<=m;i++){
        cin>>b[i];
        holdsum2 += b[i];
    }
    for(int i=0;i<=holdsum2;i++){
        for(int j=0;j<=m;j++){
            dp[i][j] = -1e9;
        }
    }
    dp[0][0]= 0;
    for(int i=0;i<=holdsum2;i++){
        for(int j=1;j<=m;j++){
            dp[i][j] = dp[i][j-1];
            if(i-b[j]>=0){
                
                dp[i][j] = max(dp[i][j-1],dp[i-b[j]][j-1]+min(b[j],n));
            }
        }
    }
    for(int i=holdsum;i<=holdsum2;i++){
        for(int j=1;j<=m;j++){
            if(dp[i][j]>=n*k){
                //cout<<i<<" "<<j<<" "<<dp[i][j]<<endl;
                cout<<i-holdsum<<endl;
                return 0;
            }
        }
    }
    cout<<"Impossible"<<endl;
}

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