#include <bits/stdc++.h>
#define fr first
#define sc second
#define m_p make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef unsigned int uint;
ll sqr(ll x){return x * x;}
int mysqrt(ll x){
int l = 0, r = 1e9 + 1;
while (r - l > 1){
int m = (l + r) / 2;
if (m * (ll)m <= x)
l = m;
else
r = m;
}
return l;
}
mt19937 rnd(1227);
mt19937_64 rndll(12365);
ll AR = 19, BR = 13, CR = 23, XR = 228, YR = 322, MODR = 1e9 + 993;
ll myrand(){
ll ZR = (XR * AR + YR * BR + CR) % MODR;
XR = YR;
YR = ZR;
return ZR;
}
int gcd(int a, int b){
return a ? gcd(b % a, a) : b;
}
int gcdex(int a, int b, int &x, int &y){
if (a == 0){
x = 0;
y = 1;
return b;
}
int x1, y1;
int ret = gcdex(b % a, a, x1, y1);
x = y1 - (b / a) * x1;
y = x1;
return ret;
}
const int Mod = 1e9 + 7;
int Bpow(int x, int y){
int ret = 1;
int w = x;
while (y){
if (y & 1)
ret = (ret * (ll)w) % Mod;
w = (w * (ll)w) % Mod;
y >>= 1;
}
return ret;
}
int Bdiv(int x){
int a, b;
gcdex(x, Mod, a, b);
if (a < 0)
a += Mod;
return a;
}
int Bdiv(int x, int y){
return (x * (ll)Bpow(y, Mod - 2)) % Mod;
}
void setmin(int &x, int y){
x = min(x, y);
}
void setmax(int &x, int y){
x = max(x, y);
}
void setmin(ll &x, ll y){
x = min(x, y);
}
void setmax(ll &x, ll y){
x = max(x, y);
}
const ll llinf = 2e18 + 100;
const double eps = 1e-9;
const int maxn = 4e5 + 100, maxw = 1e6 + 100, inf = 2e9 + 100, sq = 300, mod = 1e9 + 7, LG = 17;
struct seg_tree{
bool v;
seg_tree *l, *r;
};
typedef seg_tree * ptr;
ptr create(){
ptr t = new seg_tree;
t->v = 0;
t->l = 0;
t->r = 0;
return t;
}
ptr build(int l, int r){
ptr t = create();
if (l == r)
return t;
int m = (l + r) / 2;
t->l = build(l, m);
t->r = build(m + 1, r);
return t;
}
ptr update(ptr now, int l, int r, int id, int w){
ptr t = create();
if (l == r){
t->v = w;
return t;
}
int m = (l + r) / 2;
if (id <= m)
t->l = update(now->l, l, m, id, w),
t->r = now->r;
else
t->l = now->l,
t->r = update(now->r, m + 1, r, id, w);
t->v = t->l->v | t->r->v;
return t;
}
void get(ptr &t, int tl, int tr, int l, int r, vector<int> &h){
if (l > r || !t->v)
return;
if (tl == tr){
h.push_back(l);
t->v = 0;
return;
}
int m = (tl + tr) / 2;
get(t->l, tl, m, l, min(r, m), h);
get(t->r, m + 1, tr, max(l, m + 1), r, h);
t->v = t->l->v | t->r->v;
}
pair<int, int> start, finish;
int n;
pair<pair<int, int>, pair<int, int> > rec[maxn];
map<int, int> mpik;
vector<int> srt;
vector<pair<int, pair<int, int> > > seg[2];
int d[maxn];
ptr q[maxn];
pair<int, int> bo[maxn];
int main(){
#ifdef ONPC
//ifstream cin("a.in");
//ofstream cout("a.out");
freopen("a.in", "r", stdin);
freopen("a.out", "w", stdout);
#else
//ifstream cin("gymnasts.in");
//ofstream cout("gymnasts.out");
//freopen("sort.in", "r", stdin);
//freopen("sort.out", "w", stdout);
#endif // ONPC
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
vector<pair<int, pair<int, int> > > o;
cin >> start.fr >> start.sc >> finish.fr >> finish.sc;
cin >> n;
for (int i = 0; i < n; i++)
cin >> rec[i].fr.fr >> rec[i].fr.sc >> rec[i].sc.fr >> rec[i].sc.sc;
for (int t = 0; t < 2; t++){
for (int i = 0; i < n; i++)
srt.emplace_back(rec[i].fr.fr),
srt.emplace_back(rec[i].fr.sc);
srt.emplace_back(start.fr);
srt.emplace_back(finish.fr);
sort(srt.begin(), srt.end());
srt.resize(unique(srt.begin(), srt.end()) - srt.begin());
for (int i : srt)
mpik[i] = mpik.size() - 1;
for (int i = 0; i < n; i++)
rec[i].fr.fr = mpik[rec[i].fr.fr],
rec[i].fr.sc = mpik[rec[i].fr.sc];
start.fr = mpik[start.fr];
finish.fr = mpik[finish.fr];
srt.clear();
mpik.clear();
for (int i = 0; i < n; i++)
swap(rec[i].fr, rec[i].sc);
swap(start.fr, start.sc);
swap(finish.fr, finish.sc);
}
for (int t = 0; t < 2; t++){
vector<pair<int, pair<int, int> > > que;
for (int i = 0; i < n; i++)
que.emplace_back(rec[i].sc.fr, rec[i].fr),
que.emplace_back(rec[i].sc.sc, rec[i].fr),
que.emplace_back(rec[i].sc.fr, m_p(inf, rec[i].fr.fr)),
que.emplace_back(rec[i].sc.fr, m_p(inf, rec[i].fr.sc)),
que.emplace_back(rec[i].sc.sc, m_p(-inf, rec[i].fr.fr)),
que.emplace_back(rec[i].sc.sc, m_p(-inf, rec[i].fr.sc)),
swap(rec[i].fr, rec[i].sc);
que.emplace_back(start.sc, m_p(start.fr, start.fr));
que.emplace_back(finish.sc, m_p(finish.fr, finish.fr));
swap(start.fr, start.sc);
swap(finish.fr, finish.sc);
sort(que.begin(), que.end());
set<int> st;
st.insert(-1);
st.insert(inf);
for (auto its : que)
if (its.sc.fr == -inf)
st.erase(its.sc.sc);
else
if (its.sc.fr == inf)
st.insert(its.sc.sc);
else{
set<int> :: iterator it = st.upper_bound(its.sc.fr);
it--;
int le = *it;
it = st.lower_bound(its.sc.sc);
seg[t].emplace_back(its.fr, m_p(le, *it));
}
sort(seg[t].begin(), seg[t].end());
seg[t].resize(unique(seg[t].begin(), seg[t].end()) - seg[t].begin());
}
n = seg[0].size() + seg[1].size();
for (int t = 0; t < 2; t++){
for (int i = 0; i < seg[t].size(); i++){
int l = lower_bound(seg[!t].begin(), seg[!t].end(), m_p(seg[t][i].sc.fr, m_p(-inf, -inf))) - seg[!t].begin();
int r = upper_bound(seg[!t].begin(), seg[!t].end(), m_p(seg[t][i].sc.sc, m_p(inf, inf))) - seg[!t].begin() - 1;
if (!t)
l += seg[0].size(), r += seg[0].size();
bo[i + t * seg[0].size()] = m_p(l, r);
}
vector<pair<int, pair<int, int> > > que;
for (int i = 0; i < seg[t].size(); i++)
que.emplace_back(seg[t][i].fr, m_p(i + t * seg[0].size(), 0));
for (int i = 0; i < seg[!t].size(); i++)
que.emplace_back(seg[!t][i].sc.fr, m_p(-inf, i + !t * seg[0].size())),
que.emplace_back(seg[!t][i].sc.sc, m_p(inf, i + !t * seg[0].size()));
sort(que.begin(), que.end());
ptr now = build(0, n - 1);
for (auto its : que)
if (its.sc.fr == -inf)
now = update(now, 0, n - 1, its.sc.sc, 1);
else
if (its.sc.fr == inf)
now = update(now, 0, n - 1, its.sc.sc, 0);
else
q[its.sc.fr] = now;
}
for (int i = 0; i < n; i++)
d[i] = -1;
int sta, stb, fina, finb;
for (int i = 0; i < seg[0].size(); i++)
if (seg[0][i].fr == start.sc && seg[0][i].sc.fr <= start.fr && seg[0][i].sc.sc >= start.fr)
sta = i;
for (int i = 0; i < seg[1].size(); i++)
if (seg[1][i].fr == start.fr && seg[1][i].sc.fr <= start.sc && seg[1][i].sc.sc >= start.sc)
stb = seg[0].size() + i;
for (int i = 0; i < seg[0].size(); i++)
if (seg[0][i].fr == finish.sc && seg[0][i].sc.fr <= finish.fr && seg[0][i].sc.sc >= finish.fr)
fina = i;
for (int i = 0; i < seg[1].size(); i++)
if (seg[1][i].fr == finish.fr && seg[1][i].sc.fr <= finish.sc && seg[1][i].sc.sc >= finish.sc)
finb = seg[0].size() + i;
d[sta] = 0;
d[stb] = 0;
queue<int> que;
que.push(sta);
que.push(stb);
while (!que.empty()){
int id = que.front();
que.pop();
if (id == fina || id == finb){
cout << d[id] + 1;
return 0;
}
vector<int> g;
get(q[id], 0, n - 1, bo[id].fr, bo[id].sc, g);
for (int i : g)
if (d[i] == -1)
d[i] = d[id] + 1, que.push(i);
}
assert(0);
}
Compilation message
golf.cpp: In function 'int main()':
golf.cpp:241:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < seg[t].size(); i++){
~~^~~~~~~~~~~~~~~
golf.cpp:249:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < seg[t].size(); i++)
~~^~~~~~~~~~~~~~~
golf.cpp:251:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < seg[!t].size(); i++)
~~^~~~~~~~~~~~~~~~
golf.cpp:268:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < seg[0].size(); i++)
~~^~~~~~~~~~~~~~~
golf.cpp:271:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < seg[1].size(); i++)
~~^~~~~~~~~~~~~~~
golf.cpp:274:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < seg[0].size(); i++)
~~^~~~~~~~~~~~~~~
golf.cpp:277:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < seg[1].size(); i++)
~~^~~~~~~~~~~~~~~
golf.cpp:288:16: warning: 'fina' may be used uninitialized in this function [-Wmaybe-uninitialized]
if (id == fina || id == finb){
~~~^~~~~~~
golf.cpp:288:30: warning: 'finb' may be used uninitialized in this function [-Wmaybe-uninitialized]
if (id == fina || id == finb){
~~~^~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
5 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
6 ms |
768 KB |
Output is correct |
| 5 |
Incorrect |
15 ms |
3704 KB |
Output isn't correct |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
5 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
6 ms |
768 KB |
Output is correct |
| 5 |
Incorrect |
15 ms |
3704 KB |
Output isn't correct |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
5 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
6 ms |
768 KB |
Output is correct |
| 5 |
Incorrect |
15 ms |
3704 KB |
Output isn't correct |
| 6 |
Halted |
0 ms |
0 KB |
- |
