static void Method(string[] args)
{
int n = ReadInt();
char[] s = Read().ToCharArray();
int q = ReadInt();
SegTree segTree = new SegTree(n, (a, b) =>
{
bool[] res = new bool[26];
for (int i = 0; i < a.Length; i++)
{
res[i] = a[i] | b[i];
}
return(res);
});
for (int i = 0; i < n; i++)
{
bool[] tmp = segTree.Look(i);
tmp[s[i] - 'a'] = true;
segTree.Update(i);
}
for (int i = 0; i < q; i++)
{
string[] query = Read().Split();
int type = int.Parse(query[0]);
if (type == 1)
{
int index = int.Parse(query[1]) - 1;
bool[] tmp = segTree.Look(index);
tmp[s[index] - 'a'] = false;
tmp[query[2][0] - 'a'] = true;
s[index] = query[2][0];
segTree.Update(index);
}
else
{
int l = int.Parse(query[1]) - 1;
int r = int.Parse(query[2]);
bool[] tmp = segTree.Scan(l, r);
int kinds = 0;
for (int j = 0; j < 26; j++)
{
if (tmp[j])
{
kinds++;
}
}
WriteLine(kinds);
}
}
}
static void Method(string[] args)
{
int n = ReadInt();
long[][] xds = new long[n][];
for (int i = 0; i < n; i++)
{
xds[i] = ReadLongs();
}
xds = xds.OrderBy(a => a[0]).ToArray();
SegTree <int> tree = new SegTree <int>(n, 0, Max, 0);
for (int i = n - 1; i >= 0; i--)
{
tree.Update(i, i);
int bottom = i;
int top = n;
while (bottom + 1 < top)
{
int mid = (bottom + top) / 2;
if (xds[mid][0] < xds[i][0] + xds[i][1])
{
bottom = mid;
}
else
{
top = mid;
}
}
tree.Update(i, tree.Scan(i, top));
}
int[] dp = new int[n];
int mask = 998244353;
dp[0] = 1;
dp[tree.Look(0)] += 1;
for (int i = 1; i < n; i++)
{
dp[i] += dp[i - 1];
dp[i] %= mask;
int to = tree.Look(i);
dp[to] += dp[i - 1];
dp[to] %= mask;
}
WriteLine(dp[n - 1]);
}
static void Method(string[] args)
{
int n = ReadInt();
long[] array = ReadLongs();
var sumTree = new SegTree <long>(n, 0, (a, b) => a + b, 0);
var gcdTree = new SegTree <long>(n, 0, (a, b) => GCD(a, b), 0);
for (int i = 0; i < n; i++)
{
long delta = array[i];
if (i > 0)
{
delta -= array[i - 1];
}
sumTree.Update(i, delta);
gcdTree.Update(i, Abs(delta));
}
int m = ReadInt();
for (int i = 0; i < m; i++)
{
int[] tlr = ReadInts();
int t = tlr[0];
int l = tlr[1];
int r = tlr[2];
if (t == 0)
{
long top = sumTree.Scan(0, l);
long gcd = gcdTree.Scan(l, r);
WriteLine(GCD(top, gcd));
}
else
{
sumTree.Update(l - 1, sumTree.Look(l - 1) + t);
gcdTree.Update(l - 1, Abs(sumTree.Look(l - 1)));
if (r < n)
{
sumTree.Update(r, sumTree.Look(r) - t);
gcdTree.Update(r, Abs(sumTree.Look(r)));
}
}
}
}
static void Method(string[] args)
{
int[] hwm = ReadInts();
int h = hwm[0];
int w = hwm[1];
int m = hwm[2];
List <int>[] hws = new List <int> [h];
for (int i = 0; i < h; i++)
{
hws[i] = new List <int>();
}
SegTree <int> tree = new SegTree <int>(w, 0, Max, 0);
for (int i = 0; i < m; i++)
{
int[] hw = ReadInts();
hw[0]--;
hw[1]--;
hws[hw[0]].Add(hw[1]);
tree.Update(hw[1], tree.Look(hw[1]) + 1);
}
int res = 0;
for (int i = 0; i < h; i++)
{
for (int j = 0; j < hws[i].Count; j++)
{
tree.Update(hws[i][j], tree.Look(hws[i][j]) - 1);
}
int tmp = hws[i].Count + tree.Scan(0, h + 1);
res = Max(res, tmp);
for (int j = 0; j < hws[i].Count; j++)
{
tree.Update(hws[i][j], tree.Look(hws[i][j]) + 1);
}
}
WriteLine(res);
}
static void Method(string[] args)
{
int[] nl = ReadInts();
int n = nl[0];
int length = nl[1];
int[][] lrcs = new int[n][];
for (int i = 0; i < n; i++)
{
lrcs[i] = ReadInts();
}
Array.Sort(lrcs, (a, b) => a[0] - b[0]);
SegTree <long> tree = new SegTree <long>(length,
long.MaxValue / 2, Min, long.MaxValue / 2);
for (int i = 0; i < n; i++)
{
if (lrcs[i][0] == 0)
{
if (lrcs[i][2] < tree.Look(lrcs[i][1] - 1))
{
tree.Update(lrcs[i][1] - 1, lrcs[i][2]);
}
}
else
{
long val = lrcs[i][2]
+ tree.Scan(lrcs[i][0] - 1, lrcs[i][1] - 1);
if (val < tree.Look(lrcs[i][1] - 1))
{
tree.Update(lrcs[i][1] - 1, val);
}
}
}
WriteLine(tree.Look(length - 1));
}
static void Method(string[] args)
{
int[] nm = ReadInts();
int n = nm[0];
int m = nm[1];
int max = 1000000;
long res = 1;
int[][] ylrs = new int[n][];
for (int i = 0; i < n; i++)
{
ylrs[i] = ReadInts();
if (ylrs[i][1] == 0 && ylrs[i][2] == max)
{
res++;
}
}
Array.Sort(ylrs, (a, b) => a[0] - b[0]);
int[][] xyAdds = new int[m][];
int[][] xyRems = new int[m][];
for (int i = 0; i < m; i++)
{
int[] xlr = ReadInts();
xyAdds[i] = new int[2] {
xlr[0], xlr[1]
};
xyRems[i] = new int[2] {
xlr[0], xlr[2]
};
if (xlr[1] == 0 && xlr[2] == max)
{
res++;
}
}
Array.Sort(xyAdds, (a, b) => a[1] - b[1]);
Array.Sort(xyRems, (a, b) => a[1] - b[1]);
SegTree <long> segTree = new SegTree <long>(max + 10, 0, (a, b) => a + b, 0);
int idxAdd = 0;
int idxRem = 0;
for (int i = 0; i < n; i++)
{
while (idxAdd < m && xyAdds[idxAdd][1] <= ylrs[i][0])
{
segTree.Update(xyAdds[idxAdd][0], segTree.Look(xyAdds[idxAdd][0]) + 1);
idxAdd++;
}
while (idxRem < m && xyRems[idxRem][1] < ylrs[i][0])
{
segTree.Update(xyRems[idxRem][0], segTree.Look(xyRems[idxRem][0]) - 1);
idxRem++;
}
res += segTree.Scan(ylrs[i][1], ylrs[i][2] + 1);
}
WriteLine(res);
}
static void Method(string[] args)
{
long n = ReadLong();
int[] array = ReadInts();
int[] sorted = new int[n];
for (int i = 0; i < n; i++)
{
sorted[i] = array[i];
}
Array.Sort(sorted);
Dictionary <int, int> pos = new Dictionary <int, int>();
for (int i = 0; i < n; i++)
{
if (pos.ContainsKey(sorted[i]))
{
continue;
}
pos.Add(sorted[i], i);
}
int bottom = 0;
int top = (int)n;
while (bottom + 1 < top)
{
int mid = (bottom + top) / 2;
int val = sorted[mid];
int[] sums = new int[n];
for (int i = 0; i < n; i++)
{
if (val <= array[i])
{
sums[i] = 1;
}
else
{
sums[i] = -1;
}
if (i > 0)
{
sums[i] += sums[i - 1];
}
}
long cnt = 0;
SegTree <int> tree = new SegTree <int>(2 * 100000 + 5, 0, (a, b) => a + b, 0);
for (int i = (int)n - 1; i >= 0; i--)
{
tree.Update(sums[i] + 100000, tree.Look(sums[i] + 100000) + 1);
if (val <= array[i])
{
cnt += tree.Scan(sums[i] - 1 + 100000, 2 * 100000 + 10);
}
else
{
cnt += tree.Scan(sums[i] + 1 + 100000, 2 * 100000 + 10);
}
}
long thres = n * (n + 1) / 4;
if ((n * (n + 1) / 2) % 2 > 0)
{
thres++;
}
if (cnt >= thres)
{
bottom = mid;
}
else
{
top = mid;
}
}
Console.WriteLine(sorted[bottom]);
}