Submission #586018

#	Time	Username	Problem	Language	Result	Execution time	Memory
586018		ParsaEs	Sweeping (JOI20_sweeping)	C++17	0 / 100	547 ms	221348 KiB

sweeping

#include<bits/stdc++.h>
#pragma GCC target("sse,sse2,sse4,avx2")
#pragma GCC optimize("unroll-loops,O2")
#define rep(i, l, r, x) for(ll i = l; i != r; i += x)
#define max(x, y) (x > y ? x : y)
#define mx(x, y) (x = max(x, y))
#define X first
#define Y second
typedef int ll;
using namespace std;
typedef pair<ll, ll> pl;
typedef pair<ll, pl> pi;
constexpr ll xn = 1e6 + 5e5, xq = 1e6 + 5;
ll m1[xn << 2], m2[xn << 2], z1[xn << 2], z2[xn << 2], in[xn], ax[xq], ay[xq], o[xq], o1[xq], gt, prs;
pi q[xn], q1[xn];
void bld(ll v, ll l, ll r, ll l1, ll r1)
{
	if(r <= l1 || r1 <= l) return;
	m1[v] = m2[v] = z1[v] = z2[v] = -1;
	if(r - l < 2) return;
	ll m = (l + r) >> 1;
	bld(v << 1, l, m, l1, r1), bld(v << 1 | 1, m, r, l1, r1);
}
inline void p1(ll v)
{
	ll x = m1[v << 1], y = m1[v << 1 | 1];
	if(x >= 0) mx(q[x].Y.X, z1[v]), mx(z1[v << 1], z1[v]);
	if(y >= 0) mx(q[y].Y.X, z1[v]), mx(z1[v << 1 | 1], z1[v]);
	z1[v] = -1;
}
inline void p2(ll v)
{
	ll x = m2[v << 1], y = m2[v << 1 | 1];
	if(x >= 0) mx(q[x].Y.Y, z2[v]), mx(z2[v << 1], z2[v]);
	if(y >= 0) mx(q[y].Y.Y, z2[v]), mx(z2[v << 1 | 1], z2[v]);
	z2[v] = -1;
}
void g1(ll v, ll l, ll r, ll l1, ll r1)
{
	if(r <= l1 || r1 <= l) return;
	if(l1 <= l && r <= r1)
	{
		if(m1[v] < 0) return;
		if(gt < 0 || q[m1[v]].Y.X < q[gt].Y.X) gt = m1[v];
		return;
	}
	if(z1[v] >= 0) p1(v);
	ll m = (l + r) >> 1;
	g1(v << 1, l, m, l1, r1), g1(v << 1 | 1, m, r, l1, r1);
}
void g2(ll v, ll l, ll r, ll l1, ll r1)
{
	if(r <= l1 || r1 <= l) return;
	if(l1 <= l && r <= r1)
	{
		if(m2[v] < 0) return;
		if(gt < 0 || q[m2[v]].Y.Y < q[gt].Y.Y) gt = m2[v];
		return;
	}
	if(z2[v] >= 0) p2(v);
	ll m = (l + r) >> 1;
	g2(v << 1, l, m, l1, r1), g2(v << 1 | 1, m, r, l1, r1);
}
inline void d1(ll v)
{
	ll x = m1[v << 1], y = m1[v << 1 | 1];
	m1[v] = (x < 0 ? y : y < 0 ? x : q[x].Y.X < q[y].Y.X ? x : y);
}
inline void d2(ll v)
{
	ll x = m2[v << 1], y = m2[v << 1 | 1];
	m2[v] = (x < 0 ? y : y < 0 ? x : q[x].Y.Y < q[y].Y.Y ? x : y);
}
void pt1(ll v, ll l, ll r, ll x, bool f)
{
	if(x < l || r <= x) return;
	if(r - l < 2)
	{
		m1[v] = -1;
		if(f) m1[v] = x;
		return;
	}
	if(z1[v] >= 0) p1(v);
	ll m = (l + r) >> 1;
	pt1(v << 1, l, m, x, f), pt1(v << 1 | 1, m, r, x, f), d1(v);
}
void pt2(ll v, ll l, ll r, ll x, bool f)
{
    if(x < l || r <= x) return;
    if(r - l < 2)
    {
        m2[v] = -1;
        if(f) m2[v] = x;
        return;
    }
    if(z2[v] >= 0) p2(v);
    ll m = (l + r) >> 1;
    pt2(v << 1, l, m, x, f), pt2(v << 1 | 1, m, r, x, f), d2(v);
}
void up1(ll v, ll l, ll r, ll l1, ll r1, ll x)
{
	if(r <= l1 || r1 <= l) return;
	if(l1 <= l && r <= r1)
	{
		ll y = m1[v];
		if(y >= 0) mx(q[y].Y.X, x), mx(z1[v], x);
		return;
	}
	ll m = (l + r) >> 1;
	up1(v << 1, l, m, l1, r1, x), up1(v << 1 | 1, m, r, l1, r1, x);
}
void up2(ll v, ll l, ll r, ll l1, ll r1, ll x)
{
    if(r <= l1 || r1 <= l) return;
    if(l1 <= l && r <= r1)
    {
        ll y = m2[v];
        if(y >= 0) mx(q[y].Y.Y, x), mx(z2[v], x);
        return;
    }
    ll m = (l + r) >> 1;
    up2(v << 1, l, m, l1, r1, x), up2(v << 1 | 1, m, r, l1, r1, x);
}
void doj(ll l, ll r, ll d, ll x, ll y, ll n)
{
	ll l1 = l, r1 = r;
	if(r1 < l1) swap(l1, r1), l1++, r1++;
	if(r1 <= l1) return;
	bld(1, 0, prs, l1, r1);
	ll a1 = l1, a2 = r1 - 1, r2 = 0, c2 = 0;
	if(n > 0) r2 = c2 = 1;
	if(n > 1) r2 = (n + 1) >> 1, c2 = n >> 1;
	rep(i, l, r, d)
	{
		if(o[i] == 1)
		{
			ll a = in[q[i].X], b = q[i].Y.X;
			if(a < -1) q1[a1] = q[i], o1[a1++] = 1;
			else if(a < 0) q1[a2] = q[i], o1[a2--] = 1;
			if(a >= 0) g1(1, 0, prs, a, a + 1), g2(1, 0, prs, a, a + 1);
			ax[b] = q[a].Y.X, ay[b] = q[a].Y.Y;
		}
		if(o[i] == 2)
		{
			ll a = q[i].X;
			if(r2 <= a)
			{
				if(r2 < a) q1[a2] = {a - r2, {0, 0}}, o1[a2--] = 2;
				up1(1, 0, prs, l1, r1, x + n - a);
			}
			else
			{
				q1[a1] = q[i], o1[a1++] = 2;
				while(1)
				{
					gt = -1, g2(1, 0, prs, l1, r1);
					if(gt < 0 || q[gt].Y.Y > y + a) break;
					pt1(1, 0, prs, gt, 0), pt2(1, 0, prs, gt, 0);
					pi p = q[gt];
					q1[a1] = {p.X, {x - a + n, p.Y.Y}}, o1[a1++] = 4, in[p.X] = -2;
				}
			}
		}
		if(o[i] == 3)
		{
			ll a = q[i].X;
			if(c2 <= a)
			{
				if(c2 < a) q1[a1] = {a - c2, {0, 0}}, o1[a1++] = 3;
				up2(1, 0, prs, l1, r1, y + n - a);
			}
			else
			{
				q1[a2] = q[i], o1[a2--] = 3;
				while(1)
				{
					gt = -1, g1(1, 0, prs, l1, r1);
					if(gt < 0 || q[gt].Y.X > x + a) break;
					pt1(1, 0, prs, gt, 0), pt2(1, 0, prs, gt, 0);
					pi p = q[gt];
					q1[a2] = {p.X, {p.Y.X, y - a + n}}, o1[a2--] = 4, in[p.X] = -1;
				}
			}
		}
		if(o[i] == 4)
		{
			pi p = q[i];
			if(p.Y.X > x + c2) q1[a1] = p, in[p.X] = -2, o1[a1++] = 4;
			else if(p.Y.Y > y + r2) q1[a2] = p, in[p.X] = -1, o1[a2--] = 4;
			else pt1(1, 0, prs, i, 1), pt2(1, 0, prs, i, 1);
		}
	}
	rep(i, l, r, d)
	{
		q[i] = q1[i], o[i] = o1[i];
		if(o[i] == 4) in[q[i].X] = i;
	}
	if(n < 2) doj(l1, a1, 1, x + 1, y, 0), doj(r1 - 1, a2, -1, x, y + 1, 0);
	else doj(l1, a1, 1, x + c2, y, r2), doj(r1 - 1, a2, -1, x, y + r2, c2);
}
int main()
{
	ios_base::sync_with_stdio(0);cin.tie(0);
	ll n, m, Q;
	cin >> n >> m >> Q;
	rep(i, 0, m, 1)
	{
		ll x, y;
		cin >> x >> y;
		q[i] = {i, {x, y}}, in[i] = i, o[i] = 4;
	}
	ll cnt = m, ca = 0;
	rep(i, m, m + Q, 1)
	{
		cin >> o[i];
		if(o[i] < 4) cin >> q[i].X;
		else
		{
			cin >> q[i].Y.X >> q[i].Y.Y;
			in[cnt] = i, q[i].X = cnt++;
		}
		if(o[i] == 1) q[i].X--, q[i].Y.X = ca++;
	}
	prs = m + Q, doj(0, prs, 1, 0, 0, n);
	rep(i, 0, ca, 1) cout << ax[i] << ' ' << ay[i] << endl;
}

• Subtask 1: 0 / 1
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 0 / 53
• Subtask 5: 0 / 25