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S2OJ/305/305.cpp
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53
S2OJ/305/305.cpp
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#include <iostream>
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#include <algorithm>
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#include <array>
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#include <string>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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const int N = 1e6 + 5;
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int n, sa[N];
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std::string s;
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std::array<int, N> rk, rk1;
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void get_sa() {
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for (int i = 1; i <= n; i++) {
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sa[i] = i;
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rk[i] = s[i];
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}
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for (int w = 1; w < n; w <<= 1) {
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std::sort(sa + 1, sa + 1 + n, [&](int x, int y) {
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return rk[x] == rk[y] ? rk[x + w] < rk[y + w] : rk[x] < rk[y];
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});
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rk1 = rk;
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for (int i = 1, p = 0; i <= n; i++) {
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if (rk1[sa[i]] == rk1[sa[i - 1]] && rk1[sa[i] + w] == rk1[sa[i - 1] + w]) {
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rk[sa[i]] = p;
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} else {
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rk[sa[i]] = ++p;
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}
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}
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}
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}
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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cin >> s;
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n = s.size();
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s = ' ' + s;
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get_sa();
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for (int i = 1; i <= n; i++) cout << sa[i] << ' ';
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cout << endl;
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return 0;
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}
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