This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
#pragma GCC optimize ("Ofast")
#pragma GCC target ("avx2")
#define int ll
using namespace std;
typedef long long ll;
typedef pair <ll, ll> pii;
const ll NMAX = 1000001;
const ll INF = 1e9;
const ll nrbits = 20;
const ll MOD = 998244353;
struct rect {
int x1, y1, x2, y2;
} q[NMAX];
rect buckets[11];
int last[NMAX];
rect combine(rect a, rect b){
rect sol = {max(a.x1, b.x1), max(a.y1, b.y1), min(a.x2, b.x2), min(a.y2, b.y2)};
return sol;
}
signed main() {
#ifdef HOME
ifstream cin(".in");
ofstream cout(".out");
#endif // HOME
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int n, i, k;
cin >> n >> k;
queue <int> qq;
for(i = 1; i <= n; i++) {
cin >> q[i].x1 >> q[i].y1 >> q[i].x2 >> q[i].y2;
qq.push(i);
}
for(int j = 1; j <= k; j++) {
buckets[j] = {0, 0, INF, INF};
}
int cnt = 0, oho = 0;
while(qq.size()) {
int acum = qq.front();
qq.pop();
int oke = 0;
int care = 0;
if(last[acum] == cnt)
oho = 1;
for(int j = 1; j <= k; j++) {
rect inters = combine(q[acum], buckets[j]);
if(inters.x1 <= inters.x2 && inters.y1 <= inters.y2){
if(!care)
care = j;
oke++;
}
}
if(oke == 1 || (oho)){
buckets[care] = combine(q[acum], buckets[care]);
cnt++;
}else{
qq.push(acum); /// oke sigur e mai mare ca 0
}
last[acum] = cnt;
}
for(i = 1; i <= k; i++){
cout << buckets[i].x1 << " " << buckets[i].y1 << "\n";
}
return 0;
}
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