#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int MAXN=250006;
const ll INF=4e9;
int 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
{
int t[MAXN];
void init()
{
for(int i=0;i<MAXN;++i)t[i]=0;
}
void update(int idx,int val)
{
++idx;
for(;idx<MAXN;idx+=idx&(-idx))
{
t[idx]+=val;
}
}
int query(int idx)
{
++idx;
int ret=0;
for(;idx>0;idx-=idx&(-idx))
{
ret+=t[idx];
}
return ret;
}
int query(int l,int r)
{
return query(r)-query(l-1);
}
}fen;
vector<point>v;
map<int,int>compressed_y;
map<int,int>compressed_x;
set<int>xs;
set<int>ys;
bool ok(ll d)
{
fen.init();
int last_deleted=-1;
int cnt=0;
for(int i=0;i<v.size();++i)
{
while(v[last_deleted+1].x+d<v[i].x)
{
++last_deleted;
fen.update(compressed_y[v[last_deleted].y],-1);
}
auto l=ys.lower_bound(v[i].y-d);
auto r=ys.lower_bound(v[i].y+d+1);
--r;
cnt+=fen.query(compressed_y[(*l)],compressed_y[(*r)]);
if(cnt>=k)break;
fen.update(compressed_y[v[i].y],1);
}
//cout<<d<<" "<<cnt<<endl;
return cnt>=k;
}
void find(ll d)
{
fen.init();
int last_deleted=-1;
set<pair<ll,ll> >s;
for(int i=0;i<v.size();++i)
{
//cout<<i<<":\n";
while(v[last_deleted+1].x+d<v[i].x)
{
++last_deleted;
s.erase({v[last_deleted].y,v[last_deleted].x});
}
auto it=s.lower_bound({v[i].y-d,-INF});
for(;it!=s.end();++it)
{
if((*it).first>v[i].y+d)break;
//cout<<(*it).first<<" "<<(*it).second<<" "<<v[i].x<<" "<<v[i].y<<endl;
output.push_back(max(abs((*it).first-v[i].y),abs((*it).second-v[i].x)));
}
s.insert({v[i].y,v[i].x});
}
sort(output.begin(),output.end());
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);cout.tie(NULL);
cin>>n>>k;
for(int i=1;i<=n;++i)
{
int 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);
int 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(int i=0;i<output.size()&&i<k;++i)cout<<output[i]<<'\n';
//cout<<(ll)k-(ll)output.size()<<endl;
for(int i=0;i<(ll)k-(ll)output.size();++i)cout<<ans<<'\n';
return 0;
}
Compilation message
road_construction.cpp: In function 'bool ok(long long int)':
road_construction.cpp:56:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
56 | for(int i=0;i<v.size();++i)
| ~^~~~~~~~~
road_construction.cpp: In function 'void find(long long int)':
road_construction.cpp:78:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
78 | for(int i=0;i<v.size();++i)
| ~^~~~~~~~~
road_construction.cpp: In function 'int main()':
road_construction.cpp:110:12: warning: overflow in conversion from 'long long int' to 'std::set<int>::value_type' {aka 'int'} changes value from '-4000000000' to '294967296' [-Woverflow]
110 | xs.insert(-INF);
| ^~~~
road_construction.cpp:112:12: warning: overflow in conversion from 'long long int' to 'std::set<int>::value_type' {aka 'int'} changes value from '-4000000000' to '294967296' [-Woverflow]
112 | ys.insert(-INF);
| ^~~~
road_construction.cpp:147:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
147 | for(int i=0;i<output.size()&&i<k;++i)cout<<output[i]<<'\n';
| ~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
41 ms |
2412 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3302 ms |
57508 KB |
Output is correct |
| 2 |
Correct |
3222 ms |
57564 KB |
Output is correct |
| 3 |
Incorrect |
32 ms |
2412 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9385 ms |
52264 KB |
Output is correct |
| 2 |
Execution timed out |
10091 ms |
52308 KB |
Time limit exceeded |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9385 ms |
52264 KB |
Output is correct |
| 2 |
Execution timed out |
10091 ms |
52308 KB |
Time limit exceeded |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
41 ms |
2412 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
41 ms |
2412 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
