Submission #311317

#	Time	Username	Problem	Language	Result	Execution time	Memory
311317		VROOM_VARUN	Kitchen (BOI19_kitchen)	C++14	0 / 100	173 ms	41080 KiB

kitchen

/*
ID: varunra2
LANG: C++
TASK: kitchen
*/

#include <bits/stdc++.h>
using namespace std;

#ifdef DEBUG
#include "lib/debug.h"
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define debug_arr(...) \
  cerr << "[" << #__VA_ARGS__ << "]:", debug_arr(__VA_ARGS__)
#pragma GCC diagnostic ignored "-Wsign-compare"
//#pragma GCC diagnostic ignored "-Wunused-parameter"
//#pragma GCC diagnostic ignored "-Wunused-variable"
#else
#define debug(...) 42
#endif

#define EPS 1e-9
#define IN(A, B, C) assert(B <= A && A <= C)
#define INF (int)1e9
#define MEM(a, b) memset(a, (b), sizeof(a))
#define MOD 1000000007
#define MP make_pair
#define PB push_back
#define all(cont) cont.begin(), cont.end()
#define rall(cont) cont.end(), cont.begin()
#define x first
#define y second

const double PI = acos(-1.0);
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef map<int, int> MPII;
typedef multiset<int> MSETI;
typedef set<int> SETI;
typedef set<string> SETS;
typedef vector<int> VI;
typedef vector<PII> VII;
typedef vector<VI> VVI;
typedef vector<string> VS;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define trav(a, x) for (auto& a : x)
#define sz(x) (int)(x).size()
typedef pair<int, int> pii;
typedef vector<int> vi;
#pragma GCC diagnostic ignored "-Wsign-compare"
// util functions

const int N = 500;

VI dp;

void bad() {
  cout << "Impossible\n";
  exit(0);
}

int main() {
#ifndef ONLINE_JUDGE
  freopen("kitchen.in", "r", stdin);
  freopen("kitchen.out", "w", stdout);
#endif
  cin.sync_with_stdio(0);
  cin.tie(0);

  int n, m, k;
  cin >> n >> m >> k;

  VI a(n), b(m);

  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }

  for (int i = 0; i < m; i++) {
    cin >> b[i];
  }

  sort(all(a));
  sort(all(b));

  dp.assign(N * N + 1, -INF);

  if (*min_element(all(a)) < k) {
    bad();
  }

  int tot = 0;
  int ta = accumulate(all(a), 0);

  dp[0] = 0;

  for (int i = 0; i < m; i++) {
    int cur = b[i];
    tot += cur;
    for (int j = tot; j >= 0; j--) {
      dp[j + cur] = max(dp[j + cur], dp[j] + min(n, cur));
    }

    for (int j = ta; j <= N * N; j++) {
      if (dp[j] >= n * k) {
        cout << j - ta << '\n';
        return 0;
      }
    }
  }

  bad();

  return 0;
}

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:66:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   66 |   freopen("kitchen.in", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
kitchen.cpp:67:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   67 |   freopen("kitchen.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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