Submission #1099276

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099276		hahahoang132	Kitchen (BOI19_kitchen)	C++17	100 / 100	72 ms	108648 KiB

kitchen

#include <bits/stdc++.h>
#define ll int
using namespace std;
#define bit(x,y) ((x >> y) & 1)
const ll mod = 1e9 + 7;
const ll inf = INT_MIN/2;
ll d[305][305 * 305];
ll a[305],b[305];
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll n,m,k;
    cin >> n >> m >> k;
    ll i,j;
    ll s = 0;
    for(i = 1;i <= n;i++)
    {
        cin >> a[i];
        s += a[i];
    }
    for(i = 1;i <= m;i++) cin >> b[i];
    for(i = 1;i <= n;i++)
    {
        if(a[i] < k)
        {
            cout << "Impossible";
            return 0;
        }
    }
    for(i = 0;i <= 300;i++)
    {
        for(j = 0;j <= 300 * 300;j++)
        {
            d[i][j] = inf;
        }
    }
    d[0][0] = 0;
    for(i = 1;i <= m;i++)
    {
        for(j = 0;j <= 300 * 300;j++)
        {
            if(d[i - 1][j] == inf) continue;
            d[i][j] = max(d[i][j],d[i - 1][j]);
            if(j + b[i] <= 300 * 300) d[i][j + b[i]] = max(d[i][j + b[i]],d[i - 1][j] + min(b[i],n));
        }
    }
    ll ans = -1;
    for(i = s;i <= 300 * 300;i++)
    {
        if(d[m][i] >= n * k)
        {
            ans = i - s;
            break;
        }
    }
    if(ans == -1) cout << "Impossible";
    else cout << ans;
}

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