Submission #1119140

#	Time	Username	Problem	Language	Result	Execution time	Memory
1119140		secretwood01	Self Study (JOI22_ho_t2)	Java	0 / 100	67 ms	13784 KiB

Main

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

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter pw = new PrintWriter(System.out);
        StringTokenizer st = new StringTokenizer(br.readLine());
        int N = Integer.parseInt(st.nextToken());
        long M = Long.parseLong(st.nextToken());
        long [] a, b;
        a = new long[N];
        b = new long[N];
        st = new StringTokenizer(br.readLine());
        StringTokenizer st1 = new StringTokenizer(br.readLine());
        for (int i=0;i<N;i++) {
            a[i] = Long.parseLong(st.nextToken());
            b[i] = Long.parseLong(st1.nextToken());
        }
        pw.println(bs(a, b, N, M));
        pw.close();
        br.close();
    }
    public static boolean f(long [] a, long [] b, int N, long M, long mid) {
        long ans = 0;
        for (int i=0;i<a.length;i++) {
            if (a[i]>b[i]) {
                long nC = Math.min(M, Math.max((mid+a[i]-1)/a[i], 1));
                //long nC = Math.min(M, 1);
                ans+=nC;
                long remain = mid-nC*a[i];
                if (remain>0) {
                    ans+=(remain+b[i]-1)/b[i];
                }
            } else {
                ans+=(mid+b[i]-1)/b[i];
            }
        }
        return ans<=N*M;
    }
    public static long bs(long [] a, long [] b, int N, long M) {
        long lo = 1;
        long hi = (long)Math.pow(10,18);
        while (lo<hi) {
            long mid = (lo+hi)/2;
            if (f(a, b, N, M, mid)) {
                if (lo==mid) hi--;
                lo = mid;
            } else {
                hi = Math.max(mid-1, 1);
            }
        }
        return lo;
    }
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 9