Submission #291170

#	Time	Username	Problem	Language	Result	Execution time	Memory
291170		Agnimandur	Job Scheduling (CEOI12_jobs)	Java	0 / 100	98 ms	10488 KiB

jobs

import java.io.*;
import java.util.*;

class Main {
    public static void main(String[] args) {
        FastScanner sc = new FastScanner();
        PrintWriter pw = new PrintWriter(System.out);
        
        int N = sc.ni();
        int D = sc.ni();
        int M = sc.ni();
        
        int[][] nums = new int[M][2];
        for (int i = 0; i < M; i++)
        	nums[i] = new int[] {sc.ni()-1,i+1};
        nums = sort(nums);
        
        int low = 1;
        int high = M;
        while (low < high) {
        	int X = (low+high)/2;
        	boolean good = true;
        	int day = -1;
        	int cur = 0;
        	for (int i = 0; i < M; i++) {
        		if (nums[i][0] > day) {
        			day = nums[i][0];
        			cur = 1;
        		} else if (cur == X) {
        			day++;
        			cur = 1;
        		} else {
        			cur++;
        		}
        		if (day-nums[i][0] > D) {
        			good = false;
        			break;
        		}
        	}
        	if (good) {
        		high = X;
        	} else {
        		low = X+1;
        	}
        }
        int X = low;
        
        ArrayList<Integer>[] ans = new ArrayList[N];
        for (int i = 0; i < N; i++)
        	ans[i] = new ArrayList<Integer>();
    	int day = -1;
    	int cur = 0;
    	for (int i = 0; i < M; i++) {
    		if (nums[i][0] > day) {
    			day = nums[i][0];
    			cur = 1;
    		} else if (cur == X) {
    			day++;
    			cur = 1;
    		} else {
    			cur++;
    		}
    		ans[day].add(nums[i][1]);
    	}
    	
    	pw.println(X);
    	for (int i = 0; i < N; i++) {
    		for (int j: ans[i])
    			pw.print(j + " ");
    		pw.println(0);
    	}

        pw.close();
    }
    
    public static int[][] sort(int[][] arr) {
    	//Sort an array (immune to quicksort TLE)
    	Random rgen = new Random();
    	for (int i = 0; i < arr.length; i++) {
    		int randomPosition = rgen.nextInt(arr.length);
    		int[] temp = arr[i];
    		arr[i] = arr[randomPosition];
    		arr[randomPosition] = temp;
    	}
    	Arrays.sort(arr, new Comparator<int[]>() {
    		@Override
    		public int compare(int[] arr1, int[] arr2) {
    			return arr1[0]-arr2[0];
    			//Ascending order.
    		}
    	});
    	return arr;
    }

    static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        public FastScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int ni() {
            return Integer.parseInt(next());
        }

        long nl() {
            return Long.parseLong(next());
        }

        double nd() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
}

Compilation message (stderr)

Note: jobs.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

• Subtask 1: 0 / 100