#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll MAXN=250006;
const ll INF=4e9;
ll n,k;
vector<ll>output;
struct point
{
ll x,y;
bool operator<(point const& other)const
{
return make_pair(x,y)<make_pair(other.x,other.y);
}
};
struct BIT
{
ll t[MAXN];
void init()
{
for(ll i=0;i<MAXN;i++)t[i]=0;
}
void update(ll idx,ll val)
{
++idx;
for(;idx<MAXN;idx+=idx&(-idx))
{
t[idx]+=val;
}
}
ll query(ll idx)
{
++idx;
ll ret=0;
for(;idx>0;idx-=idx&(-idx))
{
ret+=t[idx];
}
return ret;
}
ll query(ll l,ll r)
{
return query(r)-query(l-1);
}
}fen;
struct event
{
ll time,idx,flag;
bool operator<(event const& other)const
{
return make_pair(make_pair(time,flag),idx)<make_pair(make_pair(other.time,other.flag),other.idx);
}
};
vector<point>v;
map<ll,ll>compressed_y;
map<ll,ll>compressed_x;
set<ll>xs;
set<ll>ys;
vector<event>e;
bool ok(ll d)
{
fen.init();
e.clear();
for(ll i=0;i<v.size();++i)
{
e.push_back({compressed_x[v[i].x],i,1});
auto it=xs.lower_bound(v[i].x+d+1);
e.push_back({compressed_x[(*it)],i,-1});
}
ll cnt=0;
sort(e.begin(),e.end());
for(ll i=0;i<e.size();++i)
{
//cout<<e[i].time<<" "<<e[i].idx<<" "<<e[i].flag<<" "<<v[e[i].idx].x<<" "<<v[e[i].idx].y<<endl;
if(e[i].flag==1)
{
auto l=ys.lower_bound(v[e[i].idx].y-d);
auto r=ys.lower_bound(v[e[i].idx].y+d+1);
r--;
//cout<<"#$$#%$ "<<(*l)<<" "<<(*r)<<endl;
cnt+=fen.query(compressed_y[(*l)],compressed_y[(*r)]);
//cout<<cnt<<endl;
fen.update(compressed_y[v[e[i].idx].y],+1);
}
else
{
fen.update(compressed_y[v[e[i].idx].y],-1);
}
}
//cout<<"---------------\n";
//cout<<d<<" "<<cnt<<endl;
return cnt>=k;
}
void find(ll d)
{
set<pair<ll,ll> >s;
e.clear();
for(ll i=0;i<v.size();++i)
{
e.push_back({compressed_x[v[i].x],i,1});
auto it=xs.lower_bound(v[i].x+d+1);
e.push_back({compressed_x[(*it)],i,-1});
}
sort(e.begin(),e.end());
for(ll i=0;i<e.size();++i)
{
if(e[i].flag==1)
{
auto it=s.lower_bound({v[e[i].idx].y-d,-INF});
for(;it!=s.end();++it)
{
if(abs((*it).first-v[e[i].idx].y)>d)
{
break;
}
output.push_back(max(abs((*it).first-v[e[i].idx].y),v[e[i].idx].x-(*it).second));
}
s.insert({v[e[i].idx].y,v[e[i].idx].x});
}
else
{
s.erase({v[e[i].idx].y,v[e[i].idx].x});
}
}
sort(output.begin(),output.end());
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);cout.tie(NULL);
cin>>n>>k;
for(ll i=1;i<=n;++i)
{
ll x,y;
cin>>x>>y;
v.push_back({x+y,x-y});
xs.insert(v.back().x);
ys.insert(v.back().y);
}
xs.insert(-INF);
xs.insert(INF);
ys.insert(-INF);
ys.insert(INF);
ll cnt=0;
for(auto xd:xs)
{
++cnt;
compressed_x[xd]=cnt;
}
cnt=0;
for(auto xd:ys)
{
++cnt;
compressed_y[xd]=cnt;
}
sort(v.begin(),v.end());
/*cout<<"v:\n";
for(auto xd:v)
{
cout<<xd.x<<" "<<xd.y<<endl;
}
cout<<endl<<endl;*/
ll low=0,high=INF,mid,ans=-1;
while(low<=high)
{
mid=(low+high)/2;
if(ok(mid))
{
ans=mid;
high=mid-1;
}
else low=mid+1;
}
//cout<<ans<<endl;
find(ans);
//cout<<output.size()<<endl;
for(ll i=0;i<k&&i<output.size();i++)cout<<output[i]<<'\n';
return 0;
}
Compilation message
road_construction.cpp: In function 'bool ok(long long int)':
road_construction.cpp:64:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
64 | for(ll i=0;i<v.size();++i)
| ~^~~~~~~~~
road_construction.cpp:72:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
72 | for(ll i=0;i<e.size();++i)
| ~^~~~~~~~~
road_construction.cpp: In function 'void find(long long int)':
road_construction.cpp:98:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
98 | for(ll i=0;i<v.size();++i)
| ~^~~~~~~~~
road_construction.cpp:105:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
105 | for(ll i=0;i<e.size();++i)
| ~^~~~~~~~~
road_construction.cpp: In function 'int main()':
road_construction.cpp:177:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
177 | for(ll i=0;i<k&&i<output.size();i++)cout<<output[i]<<'\n';
| ~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
84 ms |
7260 KB |
Output is correct |
| 2 |
Correct |
83 ms |
7260 KB |
Output is correct |
| 3 |
Incorrect |
17 ms |
2540 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
10053 ms |
76652 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
10102 ms |
76364 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
10102 ms |
76364 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
84 ms |
7260 KB |
Output is correct |
| 2 |
Correct |
83 ms |
7260 KB |
Output is correct |
| 3 |
Incorrect |
17 ms |
2540 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
84 ms |
7260 KB |
Output is correct |
| 2 |
Correct |
83 ms |
7260 KB |
Output is correct |
| 3 |
Incorrect |
17 ms |
2540 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
