/**
____ ____ ____ ____ ____ ____
||l |||e |||i |||n |||a |||d ||
||__|||__|||__|||__|||__|||__||
|/__\|/__\|/__\|/__\|/__\|/__\|
**/
#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
typedef long long ll;
void speed()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
}
const int maxn = 2e5 + 10;
struct event
{
int tim, type;
event(int _tim = 0, int _type = 0)
{
tim = _tim;
type = _type;
}
bool operator < (const event &e) const
{
if (tim != e.tim)
return tim < e.tim;
return type > e.type;
}
};
struct point
{
int x, y;
point(int _x = 0, int _y = 0)
{
x = _x;
y = _y;
}
void input()
{
cin >> x >> y;
}
};
struct rectangle
{
point A, B;
rectangle()
{
A = point();
B = point();
}
void input()
{
A.input();
B.input();
}
} r[maxn];
int n, k;
void input()
{
cin >> n >> k;
for (int i = 1; i <= n; i ++)
r[i].input();
}
vector < int > pos_x, pos_y;
void get_x()
{
vector < event > events;
for (int i = 1; i <= n; i ++)
{
events.push_back(event(r[i].A.x, 1));
events.push_back(event(r[i].B.x, -1));
}
sort(events.begin(), events.end());
for (int i = 0; i < 2 * n; i ++)
{
///cout << events[i].type << " " << events[i].tim << endl;
if (events[i].type == 1 && events[i + 1].type == -1)
pos_x.push_back(events[i].tim);
}
}
void get_y()
{
vector < event > events;
for (int i = 1; i <= n; i ++)
{
events.push_back(event(r[i].A.y, 1));
events.push_back(event(r[i].B.y, -1));
}
sort(events.begin(), events.end());
for (int i = 0; i < 2 * n; i ++)
{
if (events[i].type == 1 && events[i + 1].type == -1)
pos_y.push_back(events[i].tim);
}
}
const int maxk = 5;
const int maxs = 1e4 + 10;
pair < int, int > skew[maxs];
int m;
bitset < maxn > skew_set[maxs];
bool inside(pair < int, int > cur, rectangle rec)
{
if (cur.first >= rec.A.x && cur.first <= rec.B.x &&
cur.second >= rec.A.y && cur.second <= rec.B.y)
return true;
return false;
}
void match_pairs()
{
///cout << pos_x.size() << " : " << pos_y.size() << endl;
for (int x : pos_x)
for (int y : pos_y)
skew[++ m] = {x, y};
for (int i = 1; i <= m; i ++)
for (int j = 1; j <= n; j ++)
skew_set[i][j] = inside(skew[i], r[j]);
}
void find_skewers()
{
if (k == 1)
{
assert(m == 1);
cout << skew[1].first << " " << skew[1].second << endl;
return;
}
if (k == 2)
{
///cout << pos_x.size() << " : " << pos_y.size() << endl;
for (int i = 1; i <= m; i ++)
for (int j = i; j <= m; j ++)
{
if ((skew_set[i] | skew_set[j]).count() == n)
{
cout << skew[i].first << " " << skew[i].second << endl;
cout << skew[j].first << " " << skew[j].second << endl;
return;
}
}
///assert(false);
}
}
void solve()
{
input();
get_x();
get_y();
match_pairs();
find_skewers();
}
int main()
{
freopen("test.txt", "r", stdin);
solve();
return 0;
}
Compilation message
hamburg.cpp: In function 'void find_skewers()':
hamburg.cpp:162:57: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
162 | if ((skew_set[i] | skew_set[j]).count() == n)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
hamburg.cpp: In function 'int main()':
hamburg.cpp:184:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
184 | freopen("test.txt", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
4184 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
4188 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
4184 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
4188 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
4184 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
4188 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
4184 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
4188 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
