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| #include <cstdio>
#include <queue>
#include <ctime>
#include <cstdlib>
#include <algorithm>
using namespace std;
template <class Type>
void read (Type &x)
{
char c;
bool flag = false;
while ((c = getchar()) < '0' || c > '9')
c == '-' && (flag = true);
x = c - '0';
while ((c = getchar()) >= '0' && c <= '9')
x = (x << 1) + (x << 3) + c - '0';
flag && (x = ~x + 1);
}
template <class Type, class ...rest>
void read (Type &x, rest &...y) { read(x), read(y...); }
template <class Type>
void write (Type x)
{
x < 0 && (putchar('-'), x = ~x + 1);
x > 9 && (write(x / 10), 0);
putchar('0' + x % 10);
}
typedef long long L;
const int N = 2e5 + 10, M = 5e7 + 10;
struct Node
{
bool rev;
int s[2], v, w, sz;
L sum;
void init (int k)
{ s[0] = s[1] = 0, sum = v = k, w = rand(), sz = 1; }
} tr[M];
int m, rt[N];
queue <int> trash;
int get () { int t = trash.front(); trash.pop(); return t; }
void clone (int &x) { int t = get(); tr[t] = tr[x]; x = t; }
void pushup (int x)
{
tr[x].sz = tr[tr[x].s[0]].sz + tr[tr[x].s[1]].sz + 1;
tr[x].sum = tr[tr[x].s[0]].sum + tr[tr[x].s[1]].sum + tr[x].v;
}
void pushdown (int x)
{
if (!tr[x].rev) return;
tr[x].rev = false;
swap(tr[x].s[0], tr[x].s[1]);
if (tr[x].s[0])
clone(tr[x].s[0]), tr[tr[x].s[0]].rev ^= 1;
if (tr[x].s[1])
clone(tr[x].s[1]), tr[tr[x].s[1]].rev ^= 1;
}
int merge (int x, int y)
{
if (!x || !y) return x + y;
if (tr[x].w < tr[y].w)
{
pushdown(x);
tr[x].s[1] = merge(tr[x].s[1], y);
pushup(x);
return x;
}
else
{
pushdown(y);
tr[y].s[0] = merge(x, tr[y].s[0]);
pushup(y);
return y;
}
}
void split (int u, int t, int &x, int &y)
{
if (!u) return void(x = y = 0);
clone(u);
pushdown(u);
int k = tr[tr[u].s[0]].sz + 1;
if (t < k) y = u, split(tr[u].s[0], t, x, tr[u].s[0]);
else x = u, split(tr[u].s[1], t - k, tr[u].s[1], y);
pushup(u);
}
void insert (int &u, int t, int k)
{
int x, y, z;
split(u, t, x, y);
tr[z = get()].init(k);
u = merge(merge(x, z), y);
}
void remove (int &u, int t)
{
int x, y, z;
split(u, t, x, z);
split(u, t - 1, x, y);
trash.push(y);
u = merge(x, z);
}
void reverse (int &u, int l, int r)
{
int x, y, z;
split(u, r, x, z);
split(x, l - 1, x, y);
tr[y].rev ^= 1;
u = merge(merge(x, y), z);
}
L query (int &u, int l, int r)
{
int x, y, z;
split(u, r, x, z);
split(x, l - 1, x, y);
L res = tr[y].sum;
u = merge(merge(x, y), z);
return res;
}
int main ()
{
srand(time(NULL));
for (int i = 1; i < M; ++i) trash.push(i);
read(m);
L last = 0;
for (int i = 1, pre, op; i <= m; ++i)
{
read(pre, op);
rt[i] = rt[pre];
if (op == 1)
{
L t, k; read(t, k);
t ^= last, k ^= last;
insert(rt[i], t, k);
}
else if (op == 2)
{
L t; read(t);
t ^= last;
remove(rt[i], t);
}
else if (op == 3)
{
L l, r; read(l, r);
l ^= last, r ^= last;
reverse(rt[i], l, r);
}
else if (op == 4)
{
L l, r; read(l, r);
l ^= last, r ^= last;
write(last = query(rt[i], l, r)), puts("");
}
}
return 0;
}
|