Submission #930994

#	Time	Username	Problem	Language	Result	Execution time	Memory
930994		Baizho	Job Scheduling (CEOI12_jobs)	C++14	60 / 100	188 ms	13904 KiB

jobs

#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
  
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
 
// #pragma GCC optimize("Ofast,unroll-loops,fast-math")
// #pragma GCC target("popcnt")
 
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll,ll> pll;
 
#define sz size()
#define ff first
#define ss second
#define all(a) a.begin(),a.end()
#define pb push_back
 
const int mod = ll(1e9)+7; //(b + (a%b)) % b (to mod -1%(10^9+7) correctly in c++ its -1 but its suppose to be 10^9+6
const ll MOD = 998244353;  // (a%mod)*(binpow(b,mod-2,mod) = (a/b)%mod
const int N = ll(1e6)+100;
const int M = ll(2e5) + 100;
const long long inf = 5e18;
const long double eps = 1e-15L;
 
ll lcm(ll a, ll b) { return (a / __gcd(a,b))*b; }
 
ll binpow(ll a, ll b, ll m) { ll res=1; a %= m; while(b>0){ if(b&1)res=(res * a) % m; a=(a * a) % m; b/=2; } return res%m;}
 
void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }

int n, d, m;
pair<int, int> a[N];

bool check(int mach) {
	int p = 1;
	for(int i = 1; i <= n; i ++) {
		int cnt = 0;
		while(p <= m && cnt < mach && a[p].ff <= i) {
			if(i - a[p].ff > d) return 0;
			p ++;
			cnt ++;
		}
	}
	if(p <= m) return 0;
	return true;
}
 
void Baizho() {
	cin>>n>>d>>m;
	for(int i = 1; i <= m; i ++) {
		cin>>a[i].ff;
		a[i].ss = i;
	}
	sort(a + 1, a + m + 1);
	int l = 1, r = n;
	while(l <= r) {
		int mid = (l + r) / 2;
		if(check(mid)) r = mid - 1;
		else l = mid + 1;
	}
	r ++;
	cout<<r<<"\n";
	int p = 1, mach = r;
	for(int i = 1; i <= n; i ++) {
		int cnt = 0;
		while(p <= m && cnt < mach && a[p].ff <= i) {
			cout<<a[p].ss<<" ";
			p ++;
			cnt ++;
		}
		cout<<"0\n";	
	}
}
 
signed main() {		
// 	Freopen("nondec");
    ios_base::sync_with_stdio(false);   
    cin.tie(0);cout.tie(0); 
//   	precalc();
   	
    int ttt = 1;
//    cin>>ttt;
 
    for(int i=1; i<=ttt; i++) {Baizho(); }
}

Compilation message (stderr)

jobs.cpp: In function 'void Freopen(std::string)':
jobs.cpp:35:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 | void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
      |                           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:35:76: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 | void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
      |                                                                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 60 / 100