#include <bits/stdc++.h>
#define all(v) v.begin(),v.end()
#define eb emplace_back
using namespace std;
using ll=long long;
using P=pair<int,int>;
using C=complex<double>;
void chmax(ll &a,ll b){a=max(a,b);}
void chmin(ll &a,ll b){a=min(a,b);}
struct segtree{
struct T{
ll l,r,sum,val;
};
T merge(T &a,T &b){
T res;
res.l=max(a.l,a.sum+b.l);
res.r=max(b.r,a.r+b.sum);
res.sum=a.sum+b.sum;
res.val=max({a.val,b.val,a.r+b.l});
return res;
}
int n;
vector<T> dat;
segtree(int n_){
n=1;
while(n<n_)n<<=1;
dat.resize(2*n,T{0,0,0,0});
}
void upd(int k,ll x){
T to=T{max(x,0LL),max(x,0LL),x,max(x,0LL)};
k+=n;
dat[k]=to;
k>>=1;
while(k>0){
dat[k]=merge(dat[k<<1],dat[k<<1|1]);
k>>=1;
}
}
inline ll get(){
return dat[1].val;
}
};
const double eps=1e-9;
bool equal(double a,double b){return a-eps<=b&&b<=a+eps;}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
int n;cin>>n;
vector<double> x(n),y(n);
vector<ll> w(n);
vector<pair<double,P>> v;
vector<pair<P,int>> ps(n);
for(int i=0;i<n;i++){
cin>>x[i]>>y[i]>>w[i];
ps[i]=make_pair(P(y[i],x[i]),i);
}
for(int i=0;i<n;i++){
for(int j=0;j<n;j++){
if(i==j)continue;
double t=atan2(y[j]-y[i],x[j]-x[i]);
if(t>=0){
v.eb(t,P(i,j));
}
}
}
sort(all(v));
sort(all(ps));
reverse(all(ps));
segtree seg(n);
vector<int> pos(n),a(n);
for(int i=0;i<n;i++){
seg.upd(i,w[ps[i].second]);
pos[ps[i].second]=i;
a[i]=ps[i].second;
}
ll res=seg.get();
for(int i=0;i<v.size();i++){
int l=v[i].second.first,r=v[i].second.second;
swap(pos[l],pos[r]);
swap(a[pos[l]],a[pos[r]]);
seg.upd(pos[l],w[l]);
seg.upd(pos[r],w[r]);
if(i+1<v.size()&&equal(v[i].first,v[i+1].first))continue;
/*cout<<l<<" "<<r<<" "<<seg.get()<<endl;
for(int j=0;j<n;j++)cout<<a[j]<<" ";
cout<<endl;*/
chmax(res,seg.get());
}
cout<<res<<'\n';
}
Compilation message
bulldozer.cpp: In function 'int main()':
bulldozer.cpp:77:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<v.size();i++){
~^~~~~~~~~
bulldozer.cpp:83:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(i+1<v.size()&&equal(v[i].first,v[i+1].first))continue;
~~~^~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
7 ms |
760 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
632 KB |
Output is correct |
| 2 |
Correct |
6 ms |
504 KB |
Output is correct |
| 3 |
Correct |
6 ms |
504 KB |
Output is correct |
| 4 |
Correct |
6 ms |
504 KB |
Output is correct |
| 5 |
Correct |
6 ms |
504 KB |
Output is correct |
| 6 |
Correct |
7 ms |
504 KB |
Output is correct |
| 7 |
Correct |
7 ms |
632 KB |
Output is correct |
| 8 |
Correct |
6 ms |
504 KB |
Output is correct |
| 9 |
Correct |
6 ms |
504 KB |
Output is correct |
| 10 |
Correct |
7 ms |
504 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
4 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
256 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
376 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
5 ms |
376 KB |
Output is correct |
| 19 |
Correct |
5 ms |
376 KB |
Output is correct |
| 20 |
Correct |
5 ms |
376 KB |
Output is correct |
| 21 |
Correct |
6 ms |
504 KB |
Output is correct |
| 22 |
Correct |
6 ms |
504 KB |
Output is correct |
| 23 |
Correct |
6 ms |
508 KB |
Output is correct |
| 24 |
Correct |
6 ms |
504 KB |
Output is correct |
| 25 |
Correct |
6 ms |
504 KB |
Output is correct |
| 26 |
Correct |
6 ms |
504 KB |
Output is correct |
| 27 |
Correct |
6 ms |
548 KB |
Output is correct |
| 28 |
Correct |
7 ms |
504 KB |
Output is correct |
| 29 |
Correct |
7 ms |
504 KB |
Output is correct |
| 30 |
Correct |
6 ms |
504 KB |
Output is correct |
| 31 |
Correct |
6 ms |
548 KB |
Output is correct |
| 32 |
Correct |
6 ms |
504 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
632 KB |
Output is correct |
| 2 |
Correct |
6 ms |
504 KB |
Output is correct |
| 3 |
Correct |
6 ms |
504 KB |
Output is correct |
| 4 |
Correct |
6 ms |
504 KB |
Output is correct |
| 5 |
Correct |
6 ms |
504 KB |
Output is correct |
| 6 |
Correct |
7 ms |
504 KB |
Output is correct |
| 7 |
Correct |
7 ms |
632 KB |
Output is correct |
| 8 |
Correct |
6 ms |
504 KB |
Output is correct |
| 9 |
Correct |
6 ms |
504 KB |
Output is correct |
| 10 |
Correct |
7 ms |
504 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
4 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
256 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
376 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
5 ms |
376 KB |
Output is correct |
| 19 |
Correct |
5 ms |
376 KB |
Output is correct |
| 20 |
Correct |
5 ms |
376 KB |
Output is correct |
| 21 |
Correct |
6 ms |
504 KB |
Output is correct |
| 22 |
Correct |
6 ms |
504 KB |
Output is correct |
| 23 |
Correct |
6 ms |
508 KB |
Output is correct |
| 24 |
Correct |
6 ms |
504 KB |
Output is correct |
| 25 |
Correct |
6 ms |
504 KB |
Output is correct |
| 26 |
Correct |
6 ms |
504 KB |
Output is correct |
| 27 |
Correct |
6 ms |
548 KB |
Output is correct |
| 28 |
Correct |
7 ms |
504 KB |
Output is correct |
| 29 |
Correct |
7 ms |
504 KB |
Output is correct |
| 30 |
Correct |
6 ms |
504 KB |
Output is correct |
| 31 |
Correct |
6 ms |
548 KB |
Output is correct |
| 32 |
Correct |
6 ms |
504 KB |
Output is correct |
| 33 |
Correct |
795 ms |
33500 KB |
Output is correct |
| 34 |
Correct |
800 ms |
33340 KB |
Output is correct |
| 35 |
Correct |
789 ms |
33340 KB |
Output is correct |
| 36 |
Correct |
800 ms |
33340 KB |
Output is correct |
| 37 |
Correct |
808 ms |
33340 KB |
Output is correct |
| 38 |
Correct |
801 ms |
33340 KB |
Output is correct |
| 39 |
Correct |
798 ms |
33340 KB |
Output is correct |
| 40 |
Correct |
792 ms |
33340 KB |
Output is correct |
| 41 |
Correct |
803 ms |
33340 KB |
Output is correct |
| 42 |
Correct |
805 ms |
33340 KB |
Output is correct |
| 43 |
Correct |
791 ms |
33340 KB |
Output is correct |
| 44 |
Correct |
770 ms |
33340 KB |
Output is correct |
| 45 |
Correct |
786 ms |
33516 KB |
Output is correct |
| 46 |
Correct |
765 ms |
33340 KB |
Output is correct |
| 47 |
Correct |
777 ms |
33440 KB |
Output is correct |
| 48 |
Correct |
782 ms |
33340 KB |
Output is correct |
| 49 |
Correct |
776 ms |
33336 KB |
Output is correct |
| 50 |
Correct |
793 ms |
33340 KB |
Output is correct |
| 51 |
Correct |
775 ms |
33468 KB |
Output is correct |
| 52 |
Correct |
788 ms |
33340 KB |
Output is correct |
| 53 |
Correct |
784 ms |
33468 KB |
Output is correct |
| 54 |
Correct |
771 ms |
33468 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
632 KB |
Output is correct |
| 2 |
Correct |
6 ms |
504 KB |
Output is correct |
| 3 |
Correct |
6 ms |
504 KB |
Output is correct |
| 4 |
Correct |
6 ms |
504 KB |
Output is correct |
| 5 |
Correct |
6 ms |
504 KB |
Output is correct |
| 6 |
Correct |
7 ms |
504 KB |
Output is correct |
| 7 |
Correct |
7 ms |
632 KB |
Output is correct |
| 8 |
Correct |
6 ms |
504 KB |
Output is correct |
| 9 |
Correct |
6 ms |
504 KB |
Output is correct |
| 10 |
Correct |
7 ms |
504 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
4 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
256 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
376 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
5 ms |
376 KB |
Output is correct |
| 19 |
Correct |
5 ms |
376 KB |
Output is correct |
| 20 |
Correct |
5 ms |
376 KB |
Output is correct |
| 21 |
Correct |
6 ms |
504 KB |
Output is correct |
| 22 |
Correct |
6 ms |
504 KB |
Output is correct |
| 23 |
Correct |
6 ms |
508 KB |
Output is correct |
| 24 |
Correct |
6 ms |
504 KB |
Output is correct |
| 25 |
Correct |
6 ms |
504 KB |
Output is correct |
| 26 |
Correct |
6 ms |
504 KB |
Output is correct |
| 27 |
Correct |
6 ms |
548 KB |
Output is correct |
| 28 |
Correct |
7 ms |
504 KB |
Output is correct |
| 29 |
Correct |
7 ms |
504 KB |
Output is correct |
| 30 |
Correct |
6 ms |
504 KB |
Output is correct |
| 31 |
Correct |
6 ms |
548 KB |
Output is correct |
| 32 |
Correct |
6 ms |
504 KB |
Output is correct |
| 33 |
Correct |
795 ms |
33500 KB |
Output is correct |
| 34 |
Correct |
800 ms |
33340 KB |
Output is correct |
| 35 |
Correct |
789 ms |
33340 KB |
Output is correct |
| 36 |
Correct |
800 ms |
33340 KB |
Output is correct |
| 37 |
Correct |
808 ms |
33340 KB |
Output is correct |
| 38 |
Correct |
801 ms |
33340 KB |
Output is correct |
| 39 |
Correct |
798 ms |
33340 KB |
Output is correct |
| 40 |
Correct |
792 ms |
33340 KB |
Output is correct |
| 41 |
Correct |
803 ms |
33340 KB |
Output is correct |
| 42 |
Correct |
805 ms |
33340 KB |
Output is correct |
| 43 |
Correct |
791 ms |
33340 KB |
Output is correct |
| 44 |
Correct |
770 ms |
33340 KB |
Output is correct |
| 45 |
Correct |
786 ms |
33516 KB |
Output is correct |
| 46 |
Correct |
765 ms |
33340 KB |
Output is correct |
| 47 |
Correct |
777 ms |
33440 KB |
Output is correct |
| 48 |
Correct |
782 ms |
33340 KB |
Output is correct |
| 49 |
Correct |
776 ms |
33336 KB |
Output is correct |
| 50 |
Correct |
793 ms |
33340 KB |
Output is correct |
| 51 |
Correct |
775 ms |
33468 KB |
Output is correct |
| 52 |
Correct |
788 ms |
33340 KB |
Output is correct |
| 53 |
Correct |
784 ms |
33468 KB |
Output is correct |
| 54 |
Correct |
771 ms |
33468 KB |
Output is correct |
| 55 |
Correct |
801 ms |
33468 KB |
Output is correct |
| 56 |
Correct |
798 ms |
33468 KB |
Output is correct |
| 57 |
Correct |
812 ms |
33340 KB |
Output is correct |
| 58 |
Correct |
803 ms |
33340 KB |
Output is correct |
| 59 |
Correct |
794 ms |
33340 KB |
Output is correct |
| 60 |
Correct |
803 ms |
33340 KB |
Output is correct |
| 61 |
Correct |
805 ms |
33340 KB |
Output is correct |
| 62 |
Correct |
807 ms |
33340 KB |
Output is correct |
| 63 |
Correct |
811 ms |
33340 KB |
Output is correct |
| 64 |
Correct |
790 ms |
33340 KB |
Output is correct |
| 65 |
Correct |
792 ms |
33344 KB |
Output is correct |
| 66 |
Correct |
795 ms |
33392 KB |
Output is correct |
| 67 |
Correct |
793 ms |
33596 KB |
Output is correct |
| 68 |
Correct |
779 ms |
33464 KB |
Output is correct |
| 69 |
Correct |
787 ms |
33468 KB |
Output is correct |
| 70 |
Correct |
789 ms |
33612 KB |
Output is correct |
| 71 |
Correct |
793 ms |
33512 KB |
Output is correct |
| 72 |
Correct |
792 ms |
33468 KB |
Output is correct |
| 73 |
Correct |
797 ms |
33468 KB |
Output is correct |
| 74 |
Correct |
799 ms |
33468 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
7 ms |
760 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
