Submission #1004299

#	Time	Username	Problem	Language	Result	Execution time	Memory
1004299		LilPluton	Kitchen (BOI19_kitchen)	C++14	0 / 100	12 ms	860 KiB

kitchen

#include <bits/stdc++.h>
/// author: LilPluton auuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
#define OPT         ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define intt        long long
#define ll          long long
#define pb          push_back
#define arr         array
#define vll         vector<int>
#define fi          first
#define se          second
#define rep(i,j,k)  for(int i = j; i <= k; ++i)
#define all(a)      a.begin(),a.end()
#define pii         pair<int,int>
#define endll       '\n'
using namespace std;
const ll INF = 1e18;
const int N = 1e5 + 5;
ll dp[N];
ll n, m, k, sum, chefsum;
ll a[N], chef[N];

signed main()
{
    cin >> n >> m >> k;
    for(ll i = 1; i <= n; ++i)
        cin >> a[i], sum += a[i];
    sort(a + 1, a + n + 1);
    for(ll i = 1; i <= m; ++i)
        cin >> chef[i], chefsum += chef[i];
    sort(chef + 1, chef + m + 1);
    if(k == 1)
    {
        dp[0] = 1;
        for(ll i = 1; i <= m; ++i)
        {
            for(ll j = chefsum; j >= chef[i]; --j)
            {
                if(dp[j - chef[i]])
                    dp[j] = 1;
            }
        }
        for(ll i = chefsum; i <= N; ++i){
			if(dp[i]){
				cout << i - sum << endll;
				return 0;
			}
		}
		cout << "Impossible" << endll;
    }
    if(m < k || a[1] < k)
    {
        cout << "Impossible" << endll;
        return 0;
    }
    ll ans = INF;
    for(ll mask = 1; mask < (1 << m); ++mask)
    {
        ll x = __builtin_popcount(mask);
        if(x < k)
            continue;
        ll s = 0, extra = 0;
        for (ll i = 0; i < m; i++) {
            if ((1 << i) & mask) {
                extra += chef[i + 1];
                if (s < n * k) {
                    s += min(n * k - s, min(chef[i + 1], n));
                }
            }
        }
        if (extra >= sum && s == n * k)
            ans = min(ans, extra - sum);
    }
    if(ans == INF)
        cout << "Impossible";
    else    
        cout << ans << endll;
}

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