Submission #530432

#	Time	Username	Problem	Language	Result	Execution time	Memory
530432		Killer2501	Kitchen (BOI19_kitchen)	C++14	100 / 100	25 ms	708 KiB

kitchen

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define ull unsigned long long
#define pb push_back
#define pll pair<ll, ll>
#define pii pair<int, int>
#define fi first
#define se second
using namespace std;
const int N = 3e2+5;
const int M = 1e2+2;
const int mod = 1e9+7;
const ll base = 75;
const int inf = 1e9;
int m, n, t, b[N], d[N], lab[N*N];
int k, a[N], dp[N*N];
ll ans, tong;
vector<int> adj[N];
vector<pii> vi;
string s[N];
bool vis[N];
ll pw(ll k, ll n)
{
    ll total = 1;
    for(; n; n >>= 1)
    {
        if(n&1)total = total * k % mod;
        k = k * k % mod;
    }
    return total;
}
void add(int &x, int y)
{
    x += y;
    if(x >= mod)x -= mod;
}
int findp(int u)
{
    return lab[u] < 0 ? u : lab[u] = findp(lab[u]);
}
void hop(int u, int v)
{
    u = findp(u);
    v = findp(v);
    if(u == v)return;
    if(lab[u] > lab[v])swap(u, v);
    lab[u] += lab[v];
    lab[v] = u;
}

void sol()
{
    cin >> n >> m >> k;
    for(int i = 1; i <= n; i ++)
    {
        cin >> a[i];
        tong += a[i];
    }
    for(int i = 1; i <= m; i ++)cin >> b[i];
    fill_n(dp, N*N, -1);
    sort(a+1, a+1+n);
    if(a[1] < k)
    {
        cout << "Impossible";
        return;
    }
    dp[0] = 0;
    for(int i = 1; i <= m; i ++)
    {
        t = min(b[i], n);
        for(int j = N*N-1; j >= b[i]; j --)
            if(dp[j-b[i]] != -1)dp[j] = max(dp[j], dp[j-b[i]]+t);
    }
    for(int i = tong; i < N*N; i ++)
    {
        if(dp[i] >= n*k)
        {
            cout << i-tong;
            return;
        }
    }
    cout << "Impossible";
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    #define task "test"
    if(fopen(task".inp", "r"))
	{
		freopen(task".inp", "r", stdin);
		freopen(task".out", "w", stdout);
	}
    int test = 1;
    //cin >> test;
    while(test -- > 0)sol();
    return 0;
}

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:93:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |   freopen(task".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
kitchen.cpp:94:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |   freopen(task".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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