Submission #1088836

#	Time	Username	Problem	Language	Result	Execution time	Memory
1088836		akamizane	Job Scheduling (CEOI12_jobs)	C++17	0 / 100	32 ms	65536 KiB

jobs

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

using ll = long long;
using pii = pair<ll,ll>;

#define int long long
#define el cout << '\n'
#define fi first
#define se second
#define pb push_back
#define all(x) x.begin(), x.end()
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define FOD(i, a, b) for (int i = (a); i >= (b); i--)
#define REP(i, n) for (int i = 0; i < (n); i++)
template <class T1, class T2>void chmax(T1 &a, T2 b){a = max(a, b);}
template <class T1, class T2>void chmin(T1 &a, T2 b){a = min(a, b);}

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int maxn = 2e5 + 5;

const ll mod = 998244353;

void solve(){
  int n, d, m;
  cin >> n >> d >> m;
  vector<pii> x(m);
  REP(i, m){
    cin >> x[i].fi;
    x[i].se = i + 1;
  }
  sort(all(x));
  vector<vector<int>> ans;
  auto check = [&] (int mid){
    int cur = 0;
    for (int day = 1; day <= n; day++){
      for (int j = 0; j < mid; j++){
        if (x[cur].fi > day) continue;
        if (x[cur].fi + d < day) return false;
        cur++;
        if (cur == m) return true;
      }
    }
    return true;
  };
  int l = 0, r = m + 1;
  while(r - l > 1){
    int m = (l + r) / 2;
    if (check(m)) r = m;
    else l = m;
  }
  int cur = 0;
  bool f = false;
    for (int day = 1; day <= n; day++){
      vector<int> u;
      for (int j = 0; j < r && cur < m; j++){
        if (x[cur].fi > day) continue;
        u.pb(x[cur].se);
        cur++;
        if (cur == m) break; 
      }
      u.pb(0);
      ans.pb(u);
    }
    cout << r << '\n';
    for (auto u : ans){
      for (auto v : u) cout << v << " ";
      cout << '\n';
    }
}


int32_t main() {
#ifndef ONLINE_JUDGE
  freopen("input.txt", "r", stdin);
  freopen("output.txt", "w", stdout);
  freopen("debug.txt", "w", stderr);
#endif
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int tests = 1;
  //cin >> tests;
  for (int itest = 1; itest <= tests; itest++){
    cerr << "- TEST " << itest << ": \n";
    solve();
    el;
  }
  return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'void solve()':
jobs.cpp:55:8: warning: unused variable 'f' [-Wunused-variable]
   55 |   bool f = false;
      |        ^
jobs.cpp: In function 'int32_t main()':
jobs.cpp:77:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |   freopen("input.txt", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:78:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |   freopen("output.txt", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:79:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   79 |   freopen("debug.txt", "w", stderr);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100