Submission #1004305

#	Time	Username	Problem	Language	Result	Execution time	Memory
1004305		LilPluton	Kitchen (BOI19_kitchen)	C++14	51 / 100	31 ms	1112 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 n, m, k, sum, chefsum;
ll a[N], chef[N];
ll dp[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(int i = 1; i <= m; ++i)
        {
            for(int j = N; j >= chef[i]; --j)
            {
                if(dp[j - chef[i]])
                    dp[j] = 1;
            }
        }
        for(ll i = sum; i <= N; ++i)
        {
            if(dp[i])
            {
                cout << i - sum << endll;
                return 0;
            }
        }
        cout << "Impossible" << endll;
        return 0;
    }
    
    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: 9 / 9
• Subtask 2: 22 / 22
• Subtask 3: 20 / 20
• Subtask 4: 0 / 21
• Subtask 5: 0 / 28