Submission #567120

#	Time	Username	Problem	Language	Result	Execution time	Memory
567120		Uzouf	Kitchen (BOI19_kitchen)	C++14	20 / 100	742 ms	6656 KiB

kitchen

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define int long long
#define endl "\n"
int mod=1e9+7;
const int N=2e5+5;
template<class x>
using ordered_multiset = tree<x, null_type,less_equal<x>, rb_tree_tag,tree_order_statistics_node_update>;

int dp[90010];

signed main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen(".in", "r", stdin); freopen(".out", "w", stdout);

    int n,m,k; cin>>n>>m>>k;
    int time[n],cst[m];
    for (int &i:time) cin>>i;
    for (int &i:cst) cin>>i;
    sort(cst,cst+m);

    if (m<k) {
      cout<<"Impossible";
      return 0;
    }

    int ttl=0;
    for (int i=0;i<n;i++) {
      ttl+=time[i];
    }

    dp[0]=1;
    map<int,int> mp;
    vector<int> ans;

    for (int i=0;i<m;i++){
      for (int j=90005;j>=cst[i];j--){
        dp[j]=max(dp[j],dp[j-cst[i]]);
        if (dp[j]>0 && mp[j]==0) {mp[j]=1; ans.push_back(j);}
      }
    }

    int nm=1e18;
    if (k==1) {
      for (int i=ttl;i<=90005;i++) {
        if (mp[i]!=0) {
          nm=i; break;
        }
      }
    }
    else {
      int l=0,r=m-1;
      while (l<r) {
        if ((cst[l]+cst[r])<ttl) {
          l++; continue;
        }
        nm=min(nm,cst[l]+cst[r]);
        r--;
      }
    }

    if (nm==1e18) cout<<"Impossible";
    else cout<<nm-ttl;
}

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