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248 | #include <bits/stdc++.h>
using namespace std;
using LL = long long;
using vi = vector<int>;
using vL = vector<LL>;
using pii = pair<int, int>;
using pLL = pair<LL, LL>;
#define x first
#define y second
const LL N = 4e5 + 100;
const LL mod = 1e9 + 7;
char s[N];
int a[N];
int ac[N];
int x[N], y[N], c[N];
int sa[N];
int h[N], rk[N];
vector<int> md[26];
int dp[N][26];
int pos[N];
int ct[N];
int n, m;
int am, bm;
int ca, cb;
int pa, pb;
int ll, rr, ms, rs;
void getSA()
{
memset(x, 0x3f, sizeof x);
for (int i = 1; i <= n; i++)
c[x[i] = a[i]]++;
for (int i = 1; i <= m; i++)
c[i] += c[i - 1];
for (int i = n; i >= 1; i--)
sa[c[x[i]]--] = i;
for (int k = 1; k <= n; k <<= 1)
{
int num = 0;
for (int i = n - k + 1; i <= n; i++)
y[++num] = i;
for (int i = 1; i <= n; i++)
if (sa[i] > k)
y[++num] = sa[i] - k;
for (int i = 0; i <= m; i++)
c[i] = 0;
for (int i = 1; i <= n; i++)
c[x[i]]++;
for (int i = 1; i <= m; i++)
c[i] += c[i - 1];
for (int i = n; i >= 1; i--)
sa[c[x[y[i]]]--] = y[i], y[i] = 0;
swap(x, y);
num = 0;
x[sa[1]] = ++num;
for (int i = 2; i <= n; i++)
x[sa[i]] = (y[sa[i]] == y[sa[i - 1]] && y[sa[i] + k] == y[sa[i - 1] + k]) ? num : ++num;
m = num;
if (num == n)
break;
}
for (int i = 1; i <= n; i++)
rk[sa[i]] = i;
for (int i = 1, k = 0; i <= n; i++)
{
if (rk[i] == 1)
continue;
if (k)
k--;
int j = sa[rk[i] - 1];
while (i + k <= n && j + k <= n && a[i + k] == a[j + k])
k++;
h[rk[i]] = k;
}
}
const int logn = 20;
int Logn[N];
int f[N][logn];
void pre()
{ // 准备工作，初始化
Logn[1] = 0;
Logn[2] = 1;
for (int i = 3; i < N; i++)
{
Logn[i] = Logn[i / 2] + 1;
}
memset(f, 0x3f, sizeof f);
for (int i = 1; i <= n; i++)
f[i][0] = h[i];
for (int j = 1; j <= logn; j++)
for (int i = 1; i + (1 << j) - 1 <= n; i++)
f[i][j] = min(f[i][j - 1], f[i + (1 << (j - 1))][j - 1]); // ST表具体实现
}
bool cmp(int x, int y)
{
int ps = min(n - x + 1, n - y + 1);
for (int i = 0; i < 26; i++)
{
if (!dp[x][i] && !dp[y][i])
break;
if (dp[x][i] == 0)
{
ps = min(ps, dp[y][i] - y);
}
if (dp[y][i] == 0)
{
ps = min(ps, dp[x][i] - x);
}
if (dp[x][i] && dp[y][i])
{
if (dp[x][i] - x != dp[y][i] - y)
{
ps = min(ps, min(dp[x][i] - x, dp[y][i] - y));
}
else
{
pa = pos[dp[x][i]] + 1;
pb = pos[dp[y][i]] + 1;
if (a[pa] != 0 && a[pb] != 0)
{
ll = min(rk[pa], rk[pb]);
rr = max(rk[pa], rk[pb]);
ll++;
ms = Logn[rr - ll + 1];
rs = min(f[ll][ms], f[rr - (1 << ms) + 1][ms]);
if (rs <= ct[pa])
{
ps = min(ps, ac[pa + rs] - x);
}
if (rs <= ct[pb])
{
ps = min(ps, ac[pb + rs] - y);
}
}
else if (a[pa] == 0 && a[pb] == 0)
{
}
else if (a[pa] == 0)
{
ps = min(ps, ac[pb] - y);
}
else if (a[pb] == 0)
{
ps = min(ps, ac[pa] - x);
}
}
}
}
if (x + ps > n)
return true;
if (y + ps > n)
return false;
for (int i = 0; i < 26; i++)
{
if (s[dp[x][i]] == s[x + ps])
ca = i;
if (s[dp[y][i]] == s[y + ps])
cb = i;
}
if (ca == cb)
{
cout << x << " " << y << endl;
}
return ca < cb;
}
void solve()
{
cin >> n;
m = n + 1;
cin >> s + 1;
for (int i = 1; i <= n; i++)
{
int si = s[i] - 'a';
md[si].push_back(i);
}
int cnt = 1;
for (int i = 0; i < 26; i++)
{
if (md[i].size())
a[cnt] = 0, ac[cnt] = md[i][0], pos[md[i][0]] = cnt++;
for (int ii = 1; ii < md[i].size(); ii++)
{
ct[cnt - 1] = md[i].size() - ii;
a[cnt] = md[i][ii] - md[i][ii - 1], ac[cnt] = md[i][ii], pos[md[i][ii]] = cnt++;
}
}
for (int i = n; i >= 1; i--)
{
for (int ii = 0; ii < 26; ii++)
{
dp[i][ii] = dp[i + 1][ii];
}
int pos = 0;
for (int ii = 0; ii < 26; ii++)
{
if (!dp[i][ii])
{
pos = ii;
break;
}
else if (s[dp[i][ii]] == s[i])
{
pos = ii;
break;
}
}
for (int ii = pos; ii >= 1; ii--)
{
dp[i][ii] = dp[i][ii - 1];
}
dp[i][0] = i;
}
getSA();
pre();
vector<int> v(n);
for (int i = 0; i < v.size(); i++)
v[i] = i + 1;
stable_sort(v.begin(), v.end(), cmp);
for (auto x : v)
{
cout << x << ' ';
}
}
int main()
{
solve();
}
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