Submission #1108990

#	Time	Username	Problem	Language	Result	Execution time	Memory
1108990		yazansh	Job Scheduling (CEOI12_jobs)	C++17	80 / 100	405 ms	45592 KiB

jobs

/*************
  the author:     
  shimutski_zoro   
************ */
#include <bits/stdc++.h>
using namespace std;
#define yon(x) cout<<((x)?"YES":"NO");
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define ff first 
#define ss second
#define em emplace_back
#define rep(i,j,k) for(int i=j;i<=k;i++)
#define per(i,j,k) for(int i=k;i>=j;i--)
#define forp(x,y,a) for(auto &[x,y]:(a))
typedef long long  ll;
typedef pair<ll,ll> pll;
typedef vector<ll> vl;
typedef vector<pll> vpl;
typedef vector<vl> vvl;
typedef vector<vpl> vvpl;
typedef vector<string> vs;
typedef deque<ll> dl;
const int mod=1e9+7;
ll inf =1e18+1;
const int M=1e6;
const int N=1e3+1; 
const ll dx[]={1,0,-1,0},dy[]={0,1,0,-1};
void solve(){
ll n,m,d;
cin>>n>>d>>m;
vl a(m);
rep(i,0,m-1)cin>>a[i];
vl idx(m);
iota(all(idx),0LL);
sort(all(idx),[&](ll i ,ll j){return a[i]<a[j];});
sort(all(a));

 function<pair<bool,vvl>(ll)>check=[&](ll r)->pair<bool,vvl>{
  vvl tmp=vvl (n+1);
ll cnt=0;
rep(i,1,n){
  rep(j,1,r){
    if(cnt==m)return {1,tmp};
    if(a[cnt]>i)
    break;
if(a[cnt]+d>=i){
//cout<<cnt<<" "<<a[cnt]<<" "<<idx[cnt]<<" "<<i<<endl;
  tmp[i-1].em(idx[cnt++]+1);
}else return {0,tmp};
if(cnt==m)return {1,tmp};
  }
 
}
return {0,tmp};
 
 };
 // 1 1 2 2 2 3 3 4 4 5 6 6
 //0 4 1 3 8 
 vvl v;
 ll lo=1,hi=m;
 ll ans=m;
 while(lo<=hi){
  ll mid= lo + (hi-lo)/2;
  auto[ x,tmp]=check(mid);
if(x){
  hi=mid-1;
  ans=mid;
  v=tmp;
}else{
  lo=mid+1;
}
 }
cout<<lo<<endl;
//vvl v(n+1);
rep(i,0,n-1){
  if(v[i].size())
  for(auto it:v[i]){
    cout<<it<<" ";
  }
  cout<<0<<"\n";
}
}
 
 
signed main()
{
 
    ios_base::sync_with_stdio(NULL);
    cin.tie(nullptr);
    cout.tie(nullptr);
    #ifdef Usaco
    string f="herding";
    freopen((f+".in").c_str(),"r",stdin);
    freopen((f+".out").c_str(),"w",stdout);
    #endif
   int t = 1;
//cin >> t;
    while (t--)
    {
      solve();
    //  if(t>0)
      //cout<<endl;
    }
}
/*
*/

Compilation message (stderr)

jobs.cpp: In function 'void solve()':
jobs.cpp:62:5: warning: variable 'ans' set but not used [-Wunused-but-set-variable]
   62 |  ll ans=m;
      |     ^~~

• Subtask 1: 80 / 100