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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#489570#8819. CNOI KnowledgeqLWA 1ms3968kbC++141.1kb2024-07-24 21:31:062024-07-24 21:31:06

Judging History

你现在查看的是最新测评结果

  • [2024-07-24 21:31:06]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3968kb
  • [2024-07-24 21:31:06]
  • 提交

answer

#include <algorithm>
#include <cstdio>
using i32 = int;
constexpr i32 N = 1000;
i32 aks(i32 l, i32 r) noexcept {
	static i32 x;
	printf("? %d %d\n", l, r), fflush(stdout);
	return scanf("%d", &x), x;
}
i32 n, ans[N + 1], cur;
i32 suf[N + 1], vis[N + 1], pos[N + 1];
i32 cpy[N + 1], nxt[N + 1];
signed main() noexcept {
	scanf("%d", &n);
	for (i32 i = 1; i <= n; ++i) {
		i32 l = 0, r = i - 1;
		for (i32 mid; l < r;)
			if (mid = (l + r + 1) >> 1, aks(mid, i) - suf[mid] <= i - mid)
				l = mid;
			else
				r = mid - 1;
		ans[i] = l ? ans[l] : ++cur;
		std::reverse_copy(ans + 1, ans + i + 1, cpy + 1);
		nxt[1] = 0;
		for (i32 k = 2, j = 0; k <= i; ++k) {
			while (j && cpy[j + 1] != cpy[k]) j = cpy[j];
			cpy[j + 1] == cpy[k] && ++j, nxt[k] = j;
		}
		std::fill(pos + 1, pos + i + 1, 1), std::fill(vis + 1, vis + i + 1, 0), vis[0] = 1;
		for (i32 k = 1; k <= i; ++k)
			if (!vis[nxt[k]]) vis[nxt[k]] = 1, --pos[k];
		for (i32 k = 1; k <= i; ++k) pos[k] += pos[k - 1], suf[i - k + 1] += pos[k];
	}
	putchar('!');
	for (i32 i = 1; i <= n; ++i) printf(" %d", ans[i]);
	return 0;
}

Details

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Test #1:

score: 0
Wrong Answer
time: 1ms
memory: 3968kb

input:

12
3
6
6
10
10
15
10
21
15
27
20
14
6
9
20
34
43
19
9
5
2
25
51
62
25
50
72

output:

? 1 2
? 1 3
? 2 4
? 1 4
? 2 5
? 1 5
? 3 6
? 1 6
? 3 7
? 1 7
? 2 7
? 4 8
? 6 8
? 5 8
? 4 9
? 2 9
? 1 9
? 5 10
? 7 10
? 8 10
? 9 10
? 5 11
? 2 11
? 1 11
? 6 12
? 3 12
? 1 12
! 1 2 3 4 5 6 2 5 7 7 8 9

result:

wrong answer Wrong Answer.