Submission #126113

#	Time	Username	Problem	Language	Result	Execution time	Memory
126113		mechfrog88	Kitchen (BOI19_kitchen)	C++14	0 / 100	1071 ms	7076 KiB

kitchen

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("unroll-loops,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
 
using namespace __gnu_pbds;
using namespace std;
 
template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
typedef long long ll;
typedef long double ld;

ll n,m,k;
ll ans = LLONG_MAX;
vector <ll> chef;
vector <ll> arr;

void func(vector <ll> temp,ll index){
	if (index == m && temp.size() >= k){
		bool ok = true;
		ll left = 0;
		ll c = 0;
		while (c < arr.size() && ok){
			sort(temp.rbegin(),temp.rend());
			ll count = 0;
			for (int z=0;count<k;z++){
				while (temp[z] == 0 && z < temp.size()){
					z++;
				}
				if (z == temp.size()){
					ok = false;
					break;
				}
				count++;
				temp[z]--;
			}
			if (arr[c] < k){
				ok = false;
				break;
			} 
			left += arr[c]-k;
			c++;
		}
		ll s = 0;
		for (int z=0;z<temp.size();z++){
			s += temp[z];
		}
		if (s >= left && ok) ans = min(ans,s-left);
		return;
	}
	if (index == m) return;
	func(temp,index+1);
	temp.push_back(chef[index]);
	func(temp,index+1);
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin >> n >> m >> k;
	arr.resize(n);
	ll s = 0;
	for (int z=0;z<n;z++){
		cin >> arr[z];
		s += arr[z];
	}
	chef.resize(m);
	for (int z=0;z<m;z++){
		cin >> chef[z];
	}
	if (k == 1){
		bitset<90001> dp[n];
		vector <bool> ok(90001,false);
		for (int z=0;z<n;z++){
			dp[z][0] = true;
		}
		dp[0][chef[0]] = true;
		for (int z=1;z<n;z++){
			for (int x=0;x<=90000;x++){
				if (dp[z-1][x] && x+chef[z] <= 90000) {
					dp[z][x+chef[z]] = true;
					ok[x+chef[z]] = true;
				}
			}
		}
		ll ans = -1;
		ll c = 0;
		for (int z=s;z<=90000;z++){
			if (ok[z]) {
				ans = z;
				break;
			}
			c++; 
		}
		if (ans == -1) cout << "Impossible" << endl;
		else cout << ans-s << endl;
		return 0; 
	}
	vector <ll> temp;
	func(temp,0);
	if (ans == LLONG_MAX){
		cout << "Impossible" << endl;
	} else {
		cout << ans << endl;
	}
}

Compilation message (stderr)

kitchen.cpp: In function 'void func(std::vector<long long int>, ll)':
kitchen.cpp:22:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (index == m && temp.size() >= k){
                    ~~~~~~~~~~~~^~~~
kitchen.cpp:26:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while (c < arr.size() && ok){
          ~~^~~~~~~~~~~~
kitchen.cpp:30:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while (temp[z] == 0 && z < temp.size()){
                            ~~^~~~~~~~~~~~~
kitchen.cpp:33:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (z == temp.size()){
         ~~^~~~~~~~~~~~~~
kitchen.cpp:48:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int z=0;z<temp.size();z++){
                ~^~~~~~~~~~~~

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