답안 #602370

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
602370	2022-07-23T01:15:44 Z	ziduo	Hacker (BOI15_hac)	Java 11	100 / 100	365 ms	31612 KB

hac

import java.io.*;
import java.util.*;
 
class hac {
 
	public static void main(String[] args) throws IOException {
 
		hac obj = new hac();
 
		obj.doStuff();
 
	}
	
	// first # is val, second is pos
	void add(ArrayDeque<int[]> q, int[] n) {
		while (!q.isEmpty() && q.peekFirst()[0] >= n[0]) {
			q.pollFirst();
		}
		q.addFirst(n);
	}
 
	int[] nums;
	int[] sums;
	private void doStuff() throws IOException {
 
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		nums = new int[Integer.parseInt(br.readLine())];
		sums = new int[nums.length];
		StringTokenizer st = new StringTokenizer(br.readLine());
		for (int i = 0; i < nums.length; i++) {
			nums[i] = Integer.parseInt(st.nextToken());
		}
		br.close();
		
		int cap = nums.length/2;
		if (nums.length%2==1) cap++;
		int rsum = 0;
		for (int i = 0; i < cap; i++) {
			rsum += nums[i];
		}
		for (int i = 0; i < nums.length; i++) {
			sums[i] = rsum;
			rsum -= nums[i];
			rsum += nums[(i+cap)%nums.length];
		}
		
		ArrayDeque<int[]> q = new ArrayDeque<>();
		int max = 0;
		for (int i = 0; i < cap; i++) {
			add(q, new int[] {sums[i], i});
		}
		for (int i = 0; i < nums.length; i++) {
			max = Math.max(max, q.peekLast()[0]);
			//System.out.println(q.peekLast()[0]);
			if (q.peekLast()[1] == i) q.pollLast();
			add(q, new int[] {sums[(i+cap)%nums.length], (i+cap)});
		}
		
		System.out.println(max);
 
	}
 
}

Subtask #1

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	57 ms	8848 KB	Output is correct
2	Correct	57 ms	8300 KB	Output is correct
3	Correct	55 ms	8284 KB	Output is correct
4	Correct	59 ms	8488 KB	Output is correct
5	Correct	66 ms	8452 KB	Output is correct
6	Correct	61 ms	8284 KB	Output is correct
7	Correct	59 ms	8200 KB	Output is correct
8	Correct	68 ms	8324 KB	Output is correct
9	Correct	63 ms	8588 KB	Output is correct
10	Correct	62 ms	8300 KB	Output is correct
11	Correct	60 ms	8152 KB	Output is correct
12	Correct	61 ms	8360 KB	Output is correct
13	Correct	55 ms	8200 KB	Output is correct
14	Correct	66 ms	8220 KB	Output is correct
15	Correct	56 ms	8336 KB	Output is correct
16	Correct	61 ms	8080 KB	Output is correct
17	Correct	58 ms	8240 KB	Output is correct
18	Correct	58 ms	8416 KB	Output is correct

Subtask #2

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	57 ms	8848 KB	Output is correct
2	Correct	57 ms	8300 KB	Output is correct
3	Correct	55 ms	8284 KB	Output is correct
4	Correct	59 ms	8488 KB	Output is correct
5	Correct	66 ms	8452 KB	Output is correct
6	Correct	61 ms	8284 KB	Output is correct
7	Correct	59 ms	8200 KB	Output is correct
8	Correct	68 ms	8324 KB	Output is correct
9	Correct	63 ms	8588 KB	Output is correct
10	Correct	62 ms	8300 KB	Output is correct
11	Correct	60 ms	8152 KB	Output is correct
12	Correct	61 ms	8360 KB	Output is correct
13	Correct	55 ms	8200 KB	Output is correct
14	Correct	66 ms	8220 KB	Output is correct
15	Correct	56 ms	8336 KB	Output is correct
16	Correct	61 ms	8080 KB	Output is correct
17	Correct	58 ms	8240 KB	Output is correct
18	Correct	58 ms	8416 KB	Output is correct
19	Correct	61 ms	8112 KB	Output is correct
20	Correct	67 ms	8328 KB	Output is correct
21	Correct	67 ms	8456 KB	Output is correct
22	Correct	110 ms	9540 KB	Output is correct
23	Correct	173 ms	11852 KB	Output is correct
24	Correct	101 ms	9368 KB	Output is correct
25	Correct	168 ms	12068 KB	Output is correct
26	Correct	169 ms	12088 KB	Output is correct
27	Correct	70 ms	8124 KB	Output is correct
28	Correct	56 ms	8212 KB	Output is correct
29	Correct	61 ms	8320 KB	Output is correct
30	Correct	154 ms	11684 KB	Output is correct
31	Correct	161 ms	11444 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	63 ms	8188 KB	Output is correct
2	Correct	60 ms	8092 KB	Output is correct
3	Correct	175 ms	11920 KB	Output is correct
4	Correct	261 ms	15428 KB	Output is correct
5	Correct	268 ms	17560 KB	Output is correct
6	Correct	298 ms	20984 KB	Output is correct
7	Correct	285 ms	22548 KB	Output is correct
8	Correct	327 ms	30240 KB	Output is correct

Subtask #4

40.0 / 40.0

#	결과	실행 시간	메모리	Grader output
1	Correct	57 ms	8848 KB	Output is correct
2	Correct	57 ms	8300 KB	Output is correct
3	Correct	55 ms	8284 KB	Output is correct
4	Correct	59 ms	8488 KB	Output is correct
5	Correct	66 ms	8452 KB	Output is correct
6	Correct	61 ms	8284 KB	Output is correct
7	Correct	59 ms	8200 KB	Output is correct
8	Correct	68 ms	8324 KB	Output is correct
9	Correct	63 ms	8588 KB	Output is correct
10	Correct	62 ms	8300 KB	Output is correct
11	Correct	60 ms	8152 KB	Output is correct
12	Correct	61 ms	8360 KB	Output is correct
13	Correct	55 ms	8200 KB	Output is correct
14	Correct	66 ms	8220 KB	Output is correct
15	Correct	56 ms	8336 KB	Output is correct
16	Correct	61 ms	8080 KB	Output is correct
17	Correct	58 ms	8240 KB	Output is correct
18	Correct	58 ms	8416 KB	Output is correct
19	Correct	61 ms	8112 KB	Output is correct
20	Correct	67 ms	8328 KB	Output is correct
21	Correct	67 ms	8456 KB	Output is correct
22	Correct	110 ms	9540 KB	Output is correct
23	Correct	173 ms	11852 KB	Output is correct
24	Correct	101 ms	9368 KB	Output is correct
25	Correct	168 ms	12068 KB	Output is correct
26	Correct	169 ms	12088 KB	Output is correct
27	Correct	70 ms	8124 KB	Output is correct
28	Correct	56 ms	8212 KB	Output is correct
29	Correct	61 ms	8320 KB	Output is correct
30	Correct	154 ms	11684 KB	Output is correct
31	Correct	161 ms	11444 KB	Output is correct
32	Correct	63 ms	8188 KB	Output is correct
33	Correct	60 ms	8092 KB	Output is correct
34	Correct	175 ms	11920 KB	Output is correct
35	Correct	261 ms	15428 KB	Output is correct
36	Correct	268 ms	17560 KB	Output is correct
37	Correct	298 ms	20984 KB	Output is correct
38	Correct	285 ms	22548 KB	Output is correct
39	Correct	327 ms	30240 KB	Output is correct
40	Correct	205 ms	12648 KB	Output is correct
41	Correct	245 ms	13580 KB	Output is correct
42	Correct	279 ms	14172 KB	Output is correct
43	Correct	286 ms	17700 KB	Output is correct
44	Correct	359 ms	30176 KB	Output is correct
45	Correct	262 ms	15656 KB	Output is correct
46	Correct	302 ms	22128 KB	Output is correct
47	Correct	319 ms	30272 KB	Output is correct
48	Correct	314 ms	30800 KB	Output is correct
49	Correct	357 ms	31612 KB	Output is correct
50	Correct	365 ms	31556 KB	Output is correct