Submission #745832

#	Time	Username	Problem	Language	Result	Execution time	Memory
745832		vjudge1	Kitchen (BOI19_kitchen)	C++11	31 / 100	3 ms	212 KiB

kitchen

#include <bits/stdc++.h>

using namespace std;

int n,m,k;
int a[301];
int b[301];
int sum=0;

void subtask1() {
    int ans=1e9;
    if (m<k) {
        cout << "Impossible" << endl;
        return;
    }
    if (k==1) {
        for (int i=1;i<=m;i++) {
            if (b[i]>=sum) {
                ans=min(ans,b[i]-sum);
            }
        }
        int u=0;
        for (int i=1;i<=m;i++) {
            u+=b[i];
        }
        if (u>=sum) {
            ans=min(ans,u);
        }
        if (ans==1e9) {
            cout << "Impossible" << endl;
        } else {
            cout << ans-sum << endl;
        }
        return;
    } else if (k==2) {
        int u=0;
        for (int i=1;i<=m;i++) {
            u+=b[i];
        }
        if (u>=sum) {
            ans=min(ans,u);
        }
        if (ans==1e9) {
            cout << "Impossible" << endl;
        } else {
            cout << ans-sum << endl;
        }
        return;
    } else {
        cout << "Impossible" << endl;
        return;
    }
}

int check(int mask) {
    int u=0;
    int db=0;
    int su=0;
    for (int i=0;i<m;i++) {
        if ((mask>>i)%2==1) {
            if (b[i+1]>=n) {
                db++;
            } else {
                u+=b[i+1];
            }
            su+=b[i+1];
        }
    }
    if ((k<=db+(int(u/n))) && (sum<=su)) {
        return(su-sum);
    } else {
        return(1e9);
    }
}

void subtask2() {
    for (int i=1;i<=n;i++) {
        if (a[i]<k) {
            cout << "Impossible" << endl;
            return;
        }
    }
    int ans=1e9;
    for (int i=0;i<pow(2,m);i++) {
        ans=min(ans,check(i));
    }
    if (ans>=1e9) {
        cout << "Impossible" << endl;
    } else {
        cout << ans << endl;
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> m >> k;
    for (int i=1;i<=n;i++) {
        cin >> a[i];
        sum+=a[i];
    }
    for (int i=1;i<=m;i++) {
        cin >> b[i];
    }
    /*
    if (m<=2) {
        subtask1();
        return(0);
    }
    */
    if (m<=15) {
        subtask2();
        return(0);
    }
    return 0;
}

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