oj.uz

Submission #704230

# Submission time Handle Problem Language Result Execution time Memory
704230 2023-03-02T01:16:47 Z vjudge1 Xylophone (JOI18_xylophone) C++17
100 / 100
 67 ms 768 KB 
#include <bits/stdc++.h>
using namespace std;

#include "xylophone.h"

void solve(int N){
	int pos = 1;
	{
		int l = 1, r = N;
		while (r - l > 1){
			int mid = (l + r) >> 1;
			if (query(mid, N) == N-1) l = mid;
			else r = mid-1;
		}
		if (l != r){
			if (query(r, N) == N-1) pos = r;
			else pos = l;
		}
		else pos = l;
	}

	vector<int> res(N + 1, 0);
	set<int> alr;

	res[pos] = 1; alr.insert(1);

	for (int i = pos + 1; i <= N; i++){
		int diff = query(i - 1, i);
		vector<int> opts;
		for (int sign: {-1, 1}){
			int cand = res[i - 1] + sign * diff;
			if (1 <= cand && cand <= N && !alr.count(cand)) opts.push_back(cand);
		}

		if ((int)opts.size() == 1){
			res[i] = opts[0];
			alr.insert(res[i]);
		}
		else{
			int d2 = query(i - 2, i);
			for (int j = 0; j < (int)opts.size(); j++){
				if (d2 == max({res[i - 2], res[i - 1], opts[j]}) - min({res[i - 2], res[i - 1], opts[j]})){
					res[i] = opts[j];
					alr.insert(res[i]);
					break;
				}
			}
		}
	}

	for (int i = pos - 1; i >= 1; i--){
		int diff = query(i, i + 1);
		vector<int> opts;
		for (int sign: {-1, 1}){
			int cand = res[i + 1] + sign * diff;
			if (1 <= cand && cand <= N && !alr.count(cand)) opts.push_back(cand);
		}

		if ((int)opts.size() == 1){
			res[i] = opts[0];
			alr.insert(res[i]);
		}
		else{
			int d2 = query(i, i + 2);
			for (int j = 0; j < (int)opts.size(); j++){
				if (d2 == max({res[i + 2], res[i + 1], opts[j]}) - min({res[i + 2], res[i + 1], opts[j]})){
					res[i] = opts[j];
					alr.insert(res[i]);
					break;
				}
			}
		}
	}

	for (int i = 1; i <= N; i++) answer(i, res[i]);
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 2 ms 208 KB Output is correct
9 Correct 2 ms 296 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 296 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 2 ms 208 KB Output is correct
9 Correct 2 ms 296 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 296 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 3 ms 208 KB Output is correct
17 Correct 6 ms 208 KB Output is correct
18 Correct 9 ms 316 KB Output is correct
19 Correct 14 ms 324 KB Output is correct
20 Correct 13 ms 328 KB Output is correct
21 Correct 13 ms 336 KB Output is correct
22 Correct 18 ms 324 KB Output is correct
23 Correct 14 ms 328 KB Output is correct
24 Correct 10 ms 336 KB Output is correct
25 Correct 11 ms 320 KB Output is correct
26 Correct 15 ms 328 KB Output is correct
27 Correct 16 ms 328 KB Output is correct
28 Correct 10 ms 320 KB Output is correct
29 Correct 15 ms 312 KB Output is correct
30 Correct 18 ms 332 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 2 ms 208 KB Output is correct
9 Correct 2 ms 296 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 296 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 3 ms 208 KB Output is correct
17 Correct 6 ms 208 KB Output is correct
18 Correct 9 ms 316 KB Output is correct
19 Correct 14 ms 324 KB Output is correct
20 Correct 13 ms 328 KB Output is correct
21 Correct 13 ms 336 KB Output is correct
22 Correct 18 ms 324 KB Output is correct
23 Correct 14 ms 328 KB Output is correct
24 Correct 10 ms 336 KB Output is correct
25 Correct 11 ms 320 KB Output is correct
26 Correct 15 ms 328 KB Output is correct
27 Correct 16 ms 328 KB Output is correct
28 Correct 10 ms 320 KB Output is correct
29 Correct 15 ms 312 KB Output is correct
30 Correct 18 ms 332 KB Output is correct
31 Correct 34 ms 328 KB Output is correct
32 Correct 35 ms 456 KB Output is correct
33 Correct 57 ms 488 KB Output is correct
34 Correct 46 ms 592 KB Output is correct
35 Correct 31 ms 552 KB Output is correct
36 Correct 53 ms 472 KB Output is correct
37 Correct 40 ms 488 KB Output is correct
38 Correct 37 ms 492 KB Output is correct
39 Correct 65 ms 436 KB Output is correct
40 Correct 61 ms 456 KB Output is correct
41 Correct 52 ms 460 KB Output is correct
42 Correct 32 ms 504 KB Output is correct
43 Correct 51 ms 472 KB Output is correct
44 Correct 45 ms 620 KB Output is correct
45 Correct 51 ms 488 KB Output is correct
46 Correct 63 ms 500 KB Output is correct
47 Correct 64 ms 456 KB Output is correct
48 Correct 60 ms 452 KB Output is correct
49 Correct 67 ms 676 KB Output is correct
50 Correct 55 ms 492 KB Output is correct
51 Correct 50 ms 488 KB Output is correct
52 Correct 53 ms 556 KB Output is correct
53 Correct 48 ms 768 KB Output is correct
54 Correct 46 ms 612 KB Output is correct
55 Correct 56 ms 452 KB Output is correct
56 Correct 65 ms 532 KB Output is correct
57 Correct 55 ms 484 KB Output is correct
58 Correct 51 ms 600 KB Output is correct
59 Correct 64 ms 500 KB Output is correct
60 Correct 47 ms 468 KB Output is correct