Submission #256318

#	Time	Username	Problem	Language	Result	Execution time	Memory
256318		Blagojce	Kitchen (BOI19_kitchen)	C++11	52 / 100	1083 ms	132200 KiB

kitchen

#include <bits/stdc++.h> 
#define fr(i, n, m) for(int i = (n); i < (m); i ++)
#define pb push_back
#define st first
#define nd second
#define pq priority_queue
#define all(x) begin(x), end(x)
#include <time.h>
#include <cmath>
 
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
 
const int i_inf = 1e4;
const ll inf = 1e17;
const ll mod = 1000000007;
const ld eps = 1e-13;
const ld pi  = 3.14159265359;
 
mt19937 _rand(time(NULL));
clock_t timer = clock();
const int mxn = 500;
int n, m, k;
int a[mxn];
int b[mxn];

bool done[mxn*mxn];
map<pair<pii, pii>, bool> mapa;
void solve(int h, int pos, int sum, int p){
	if(mapa[{{h, pos}, {sum,p}}]) return;
	mapa[{{h, pos}, {sum,p}}] = true;
	
	if(h == k-1 && pos == n){
		done[sum] = true;
	}
	if(p == m) return;
	
	int bound = n;
	if(h == k-1) bound = n-pos;
	int extr = 0;
	int add = b[p];
	
	if(b[p] > bound){
		extr = b[p]-bound;
		add = bound;
	}
	if(pos + add > n){
		solve(h+1, pos+add-n, sum+extr, p+1);
	}
	else{
		solve(h, pos+add, sum + extr, p+1);
	}
	solve(h, pos, sum, p+1);

}

void solve(){
	cin >> n >> m >> k;
	int rem = 0;
	fr(i, 0, n){
		cin >> a[i];
		rem += a[i]-k;
	}	
	fr(i, 0, m){
		cin >> b[i];
	}
	fr(i, 0, n){
		if(a[i] < k){
			cout<<"Impossible"<<endl;
			return;
		}
	}
	
	solve(0, 0, 0, 0); 
	int ans = -1;
	fr(i, rem, mxn*mxn) if(done[i]){ ans = i; break;}
	if(ans == -1) cout<<"Impossible"<<endl;
	else cout<<ans-rem<<endl;
	
	
}
 
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	solve();
}

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