Submission #331688

#	Time	Username	Problem	Language	Result	Execution time	Memory
331688		soroush	Kitchen (BOI19_kitchen)	C++14	100 / 100	65 ms	876 KiB

kitchen

//*
//#pragma GCC optimize("O2")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
//#pragma GCC target("avx,avx2,sse,sse2,fma,tune=native")
//*/
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef long double ld;
typedef pair<int  ,int > pii;
 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
 
const ll maxn  = 1e5;
const ll mod =1e9+7;
const ld PI = acos((ld)-1);
 
#define pb push_back
#define endl '\n'
#define dokme(x) cout << x , exit(0)
#define migmig ios::sync_with_stdio(false),cin.tie(0),cout.tie(0)
#define ms(x , y) memset(x , y , sizeof x)
ll pw(ll a, ll b, ll md = mod){ll res = 1;while(b){if(b&1){res=(a*res)%md;}a=(a*a)%md;b>>=1;}return(res);}
 
int n , m , k;
int a[maxn];
int b[maxn];
int suma = 0 , sumb = 0;

int dp[maxn];

int32_t main(){
    migmig;
	cin >> n >> m >> k;
	for(int i = 0 ; i < n ; i ++)	
		cin >> a[i], suma+=a[i];
	for(int i = 0 ; i < m ; i ++)
		cin >> b[i], sumb+=b[i];
	sort(a , a + n);
	sort(b , b + m);
	if(m < k)dokme("Impossible");
	if(*min_element(a , a + n) < k)dokme("Impossible");
	if(suma > sumb)dokme("Impossible");
	ms(dp, -1);
	dp[0] = 0;
	for(int i = 0 ; i < m ; i ++)
		for(int j = sumb ; j >= 0 ; j --)
			if(dp[j] != -1) dp[j + b[i]] = max(dp[j + b[i]] , dp[j] + min(b[i] , n));
	for(int i = suma ; i <= sumb ; i ++ )
		if(dp[i] >= n*k)dokme(i - suma);
	cout << "Impossible";
    return(0);
}

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