Submission #571030

#	Time	Username	Problem	Language	Result	Execution time	Memory
571030		elesis	Job Scheduling (CEOI12_jobs)	C++14	80 / 100	506 ms	45616 KiB

jobs

#include<bits/stdc++.h>
using namespace std;
#define fast ios_base::sync_with_stdio(false);cin.tie(0);
#define int long long 
#define pii pair<int,int> 
#define ff first
#define ss second
const int inf=1e11+7;
const int mod =1000000007;
int binpow(int a,int b,int m) {
    a %= m;
    int res = 1;
    while(b>0) {
        if (b&1)
        {
            res=res*a%m;
        }
        a=a*a%m;
        b>>=1;
    }
    return res;
}
int N,M,D;

pair<bool, vector<vector <int>>> ok(vector<pii> &arr, int x)
{
	vector <vector <int>> nub(N);
	int job=0;
	for(int i=1;i<=N;i++)
	{
		for(int j=0;j<x;j++)
		{
			if(arr[job].ff>i)
			{
				break;
			}
			if(arr[job].ff+D>=i)
			{
				nub[i-1].push_back(arr[job].ss);
				job++;
			}
			else
			{
				return {false,nub};
			}
			if(job==M)
			{
				return {true,nub};
			}
		}
	}
	return {false,nub};
}

void solve()
{
    cin>>N>>D>>M;
    int ans;
    vector <pii> arr(M);
    for(int i=0;i<M;i++)
    {
        cin>>arr[i].first;
        arr[i].second=i+1;
    }
    sort(arr.begin(),arr.end());
    vector <vector <int>> res;
    int lo=1,hi=M;
    while(lo<hi)
    {
        int mid=(lo+hi)/2;
        pair <bool,vector <vector <int>>> ef=ok(arr,mid);
        if(ef.ff)
        {
            ans=mid;
            res=ef.ss;
            hi=mid;
        }
        else
        {
            lo=mid+1;
        }
    }
    cout << ans << "\n";
    for(int i=0;i<N;i++)
    {
        for(auto it:res[i])
        {
            cout << it << " " ;
        }
        cout << 0 << "\n";
    }
}
signed main()
{
    fast
    clock_t start, end;
    start = clock();
    solve();
    end = clock();
    double time_taken=double(end-start)/double(CLOCKS_PER_SEC);
    //cout << "time taken" << " " << time_taken << "\n";
}

Compilation message (stderr)

jobs.cpp: In function 'int main()':
jobs.cpp:100:12: warning: unused variable 'time_taken' [-Wunused-variable]
  100 |     double time_taken=double(end-start)/double(CLOCKS_PER_SEC);
      |            ^~~~~~~~~~

• Subtask 1: 80 / 100