提交记录 4490


用户 题目 状态 得分 用时 内存 语言 代码长度
GuGuDove 1006. 【模板题】后缀排序 Wrong Answer 0 198.82 ms 3568 KB C++11 1.52 KB
提交时间 评测时间
2018-07-23 17:52:59 2020-07-31 23:03:15
#include<cstdio>
#include<algorithm>
#include<cstring>
using namespace std;
const int maxn = 200005;
char r,s[maxn];
int sa[maxn], t[maxn], t2[maxn], c[maxn], n, rk[maxn], h[maxn];  //x一直是rank数组
void getSA(int m) {  //1到m
	int i, *x = t, *y = t2;
	for (i = 0; i < m; ++i)c[i] = 0;
	for (i = 0; i < n; ++i)x[i] = s[i];
	for (i = 0; i < n; ++i)c[x[i]]++; 
	for (i = 1; i < m; ++i)c[i] += c[i - 1];
	for (i = n - 1; i >= 0; --i)sa[--c[x[i]]] = i; 
	for (int k = 1; k <= n; k <<= 1) {
		int p = 0;
		for (i = n - k; i < n; ++i)y[p++] = i; //直接利用sa数组,第二关键字单个排序,y是由排名到下标的数组
		for (i = 0; i < n; ++i)if (sa[i] >= k)y[p++] = sa[i] - k;
		//基数排序求sa
		for (i = 0; i < m; ++i)c[i] = 0;
		for (i = 0; i < n; ++i)c[x[y[i]]]++;
		for (i = 0; i < m; ++i)c[i] += c[i - 1];
		for (i = n - 1; i >= 0; --i)sa[--c[x[y[i]]]] = y[i]; //第一次利用后缀位置优先序,这里利用第二关键字优先序
		swap(x, y);
		p = 1;
		x[sa[0]] = 0;
		for (i = 1; i < n; ++i)
			x[sa[i]] = y[sa[i]] == y[sa[i - 1]] && y[sa[i] + k] == y[sa[i - 1] + k] ? p - 1 : p++;
		if (p >= n)break;
		m = p;
	}
}
void getH() {
	int i, j, k = 0;
	for (i = 0; i < n; ++i)rk[sa[i]] = i;
	for (i = 0; i < n; ++i) {
		if (k)k--;
		if (rk[i]) {
			j = sa[rk[i] - 1];
			while (s[i + k] == s[j + k])++k;
			h[rk[i]] = k;
		}
	}
}
int main() {
	scanf("%s", s);
	n = strlen(s);
	for (int i = 0; i < n; ++i)s[i] -= 'a';
	getSA(24);
	getH();
	if (n) {
		for (int i = 0; i < n - 1; ++i)printf("%d ", sa[i]+1); //默认序从0开始
		printf("%d\n", sa[n - 1]+1);
		for (int i = 1; i < n - 1; ++i)printf("%d ", h[i]);
		if(n-1)printf("%d", h[n - 1]);
	}
	return 0;
}

CompilationN/AN/ACompile OKScore: N/A

Subtask #1 Testcase #110.65 us44 KBWrong AnswerScore: 0

Subtask #1 Testcase #214.62 us44 KBAcceptedScore: 100

Subtask #1 Testcase #311.19 us44 KBAcceptedScore: 0

Subtask #1 Testcase #415.21 us44 KBAcceptedScore: 0

Subtask #1 Testcase #515.22 us44 KBAcceptedScore: 0

Subtask #1 Testcase #615.47 us44 KBAcceptedScore: 0

Subtask #1 Testcase #7198.82 ms2 MB + 24 KBRuntime ErrorScore: -100

Subtask #1 Testcase #847.831 ms3 MB + 360 KBAcceptedScore: 0

Subtask #1 Testcase #9186.409 ms2 MB + 24 KBRuntime ErrorScore: 0

Subtask #1 Testcase #10182.28 ms1 MB + 352 KBRuntime ErrorScore: 0

Subtask #1 Testcase #11183.57 ms1 MB + 352 KBRuntime ErrorScore: 0

Subtask #1 Testcase #1238.465 ms3 MB + 404 KBWrong AnswerScore: 0

Subtask #1 Testcase #1337.968 ms3 MB + 496 KBWrong AnswerScore: 0

Subtask #1 Testcase #14197.691 ms2 MB + 52 KBRuntime ErrorScore: 0

Subtask #1 Testcase #1547.208 ms3 MB + 276 KBWrong AnswerScore: 0

Subtask #1 Testcase #1638.312 ms3 MB + 404 KBWrong AnswerScore: 0

Subtask #1 Testcase #1737.818 ms3 MB + 424 KBWrong AnswerScore: 0

Subtask #1 Testcase #1838.163 ms3 MB + 424 KBWrong AnswerScore: 0


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