Submission #126009

#	Time	Username	Problem	Language	Result	Execution time	Memory
126009		miguel	Kitchen (BOI19_kitchen)	C++14	21 / 100	20 ms	1400 KiB

kitchen

#pragma optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define dbg(x) cout << #x << '=' << x << '\n';
#define ll long long
#define sz size()
#define x first
#define y second
#define pi pair <int, int>
#define pii pair <int, pi>
#define vi vector <int>
#define int ll
const ll mod = 1e9 + 7;
int n, m, k, s;
int a[305], b[305], dp[2][1000001];

int32_t main(){
    ios_base :: sync_with_stdio(0); cin.tie(); cout.tie();
    cin>>n>>m>>k;
    if(m<k) return cout<<"Impossible", 0;
    for(int i=1; i<=n; i++){
        cin>>a[i];
        s+=a[i];
        if(a[i]<k) return cout<<"Impossible", 0;
    }
    for(int i=1; i<=m; i++) cin>>b[i];
    dp[0][0]=0;
    int cur=0;
    for(int i=1; i<=m; i++){
        for(int h=0; h<=cur; h++){
            dp[1][h+b[i]]=max(dp[0][h+b[i]], dp[0][h]+min(b[i], n));
        }
        cur+=b[i];
        for(int h=0; h<=cur; h++) dp[0][h]=dp[1][h];
    }
    //cout<<"xd";
    for(int h=s; h<=cur; h++){
        //cout<<h<<" "<<dp[0][h]<<endl;
        if(dp[0][h]>=n*k) return cout<<h-s, 0;
    }
    cout<<"Impossible";

}

Compilation message (stderr)

kitchen.cpp:1:0: warning: ignoring #pragma optimize  [-Wunknown-pragmas]
 #pragma optimize("Ofast")

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