oj.uz

Submission #206114

# Submission time Handle Problem Language Result Execution time Memory
206114 2020-03-02T09:27:38 Z TAISA_ Bulldozer (JOI17_bulldozer) C++14
55 / 100
 1393 ms 128212 KB 
#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 long double eps=1e-50;
bool equal(long double a,long double b){return a-eps<=b&&b<=a+eps;}
int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;cin>>n;
	vector<long double> x(n),y(n);
	vector<ll> w(n);
	vector<pair<long 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;
			long double t=atan2l(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();
	set<int> st;
	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]);
		st.insert(l);
		st.insert(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;*/
		assert(st.size()==2);
		st.clear();
		chmax(res,seg.get());
	}
	cout<<res<<'\n';
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:78:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<v.size();i++){
              ~^~~~~~~~~
bulldozer.cpp:86:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(i+1<v.size()&&equal(v[i].first,v[i+1].first))continue;
      ~~~^~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 9 ms 1396 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 760 KB Output is correct
2 Correct 9 ms 760 KB Output is correct
3 Correct 9 ms 760 KB Output is correct
4 Correct 8 ms 760 KB Output is correct
5 Correct 8 ms 760 KB Output is correct
6 Correct 9 ms 760 KB Output is correct
7 Correct 7 ms 764 KB Output is correct
8 Correct 8 ms 760 KB Output is correct
9 Correct 8 ms 764 KB Output is correct
10 Correct 8 ms 760 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 3 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 380 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 8 ms 760 KB Output is correct
22 Correct 8 ms 760 KB Output is correct
23 Correct 10 ms 760 KB Output is correct
24 Correct 10 ms 760 KB Output is correct
25 Correct 8 ms 760 KB Output is correct
26 Correct 9 ms 744 KB Output is correct
27 Correct 7 ms 760 KB Output is correct
28 Correct 8 ms 760 KB Output is correct
29 Correct 8 ms 760 KB Output is correct
30 Correct 8 ms 760 KB Output is correct
31 Correct 8 ms 760 KB Output is correct
32 Correct 8 ms 760 KB Output is correct

Subtask #3
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 760 KB Output is correct
2 Correct 9 ms 760 KB Output is correct
3 Correct 9 ms 760 KB Output is correct
4 Correct 8 ms 760 KB Output is correct
5 Correct 8 ms 760 KB Output is correct
6 Correct 9 ms 760 KB Output is correct
7 Correct 7 ms 764 KB Output is correct
8 Correct 8 ms 760 KB Output is correct
9 Correct 8 ms 764 KB Output is correct
10 Correct 8 ms 760 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 3 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 380 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 8 ms 760 KB Output is correct
22 Correct 8 ms 760 KB Output is correct
23 Correct 10 ms 760 KB Output is correct
24 Correct 10 ms 760 KB Output is correct
25 Correct 8 ms 760 KB Output is correct
26 Correct 9 ms 744 KB Output is correct
27 Correct 7 ms 760 KB Output is correct
28 Correct 8 ms 760 KB Output is correct
29 Correct 8 ms 760 KB Output is correct
30 Correct 8 ms 760 KB Output is correct
31 Correct 8 ms 760 KB Output is correct
32 Correct 8 ms 760 KB Output is correct
33 Correct 1379 ms 66328 KB Output is correct
34 Correct 1387 ms 66328 KB Output is correct
35 Correct 1376 ms 66328 KB Output is correct
36 Correct 1374 ms 66328 KB Output is correct
37 Correct 1353 ms 66328 KB Output is correct
38 Correct 1376 ms 66328 KB Output is correct
39 Correct 1355 ms 66328 KB Output is correct
40 Correct 1393 ms 66328 KB Output is correct
41 Correct 1370 ms 66328 KB Output is correct
42 Correct 1389 ms 66356 KB Output is correct
43 Correct 1371 ms 66328 KB Output is correct
44 Correct 1379 ms 66328 KB Output is correct
45 Correct 1372 ms 66328 KB Output is correct
46 Correct 1355 ms 66500 KB Output is correct
47 Correct 1370 ms 66328 KB Output is correct
48 Correct 1373 ms 66340 KB Output is correct
49 Correct 1351 ms 66460 KB Output is correct
50 Correct 1351 ms 66340 KB Output is correct
51 Correct 1377 ms 66328 KB Output is correct
52 Correct 1356 ms 66328 KB Output is correct
53 Correct 1356 ms 66328 KB Output is correct
54 Correct 1336 ms 66328 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 760 KB Output is correct
2 Correct 9 ms 760 KB Output is correct
3 Correct 9 ms 760 KB Output is correct
4 Correct 8 ms 760 KB Output is correct
5 Correct 8 ms 760 KB Output is correct
6 Correct 9 ms 760 KB Output is correct
7 Correct 7 ms 764 KB Output is correct
8 Correct 8 ms 760 KB Output is correct
9 Correct 8 ms 764 KB Output is correct
10 Correct 8 ms 760 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 3 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 380 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 8 ms 760 KB Output is correct
22 Correct 8 ms 760 KB Output is correct
23 Correct 10 ms 760 KB Output is correct
24 Correct 10 ms 760 KB Output is correct
25 Correct 8 ms 760 KB Output is correct
26 Correct 9 ms 744 KB Output is correct
27 Correct 7 ms 760 KB Output is correct
28 Correct 8 ms 760 KB Output is correct
29 Correct 8 ms 760 KB Output is correct
30 Correct 8 ms 760 KB Output is correct
31 Correct 8 ms 760 KB Output is correct
32 Correct 8 ms 760 KB Output is correct
33 Correct 1379 ms 66328 KB Output is correct
34 Correct 1387 ms 66328 KB Output is correct
35 Correct 1376 ms 66328 KB Output is correct
36 Correct 1374 ms 66328 KB Output is correct
37 Correct 1353 ms 66328 KB Output is correct
38 Correct 1376 ms 66328 KB Output is correct
39 Correct 1355 ms 66328 KB Output is correct
40 Correct 1393 ms 66328 KB Output is correct
41 Correct 1370 ms 66328 KB Output is correct
42 Correct 1389 ms 66356 KB Output is correct
43 Correct 1371 ms 66328 KB Output is correct
44 Correct 1379 ms 66328 KB Output is correct
45 Correct 1372 ms 66328 KB Output is correct
46 Correct 1355 ms 66500 KB Output is correct
47 Correct 1370 ms 66328 KB Output is correct
48 Correct 1373 ms 66340 KB Output is correct
49 Correct 1351 ms 66460 KB Output is correct
50 Correct 1351 ms 66340 KB Output is correct
51 Correct 1377 ms 66328 KB Output is correct
52 Correct 1356 ms 66328 KB Output is correct
53 Correct 1356 ms 66328 KB Output is correct
54 Correct 1336 ms 66328 KB Output is correct
55 Correct 1377 ms 66328 KB Output is correct
56 Correct 1368 ms 66328 KB Output is correct
57 Correct 1353 ms 66328 KB Output is correct
58 Correct 1379 ms 66332 KB Output is correct
59 Correct 1366 ms 66456 KB Output is correct
60 Correct 1374 ms 66328 KB Output is correct
61 Correct 1370 ms 66328 KB Output is correct
62 Correct 1376 ms 66332 KB Output is correct
63 Correct 1361 ms 66328 KB Output is correct
64 Correct 1373 ms 66328 KB Output is correct
65 Runtime error 976 ms 128212 KB Execution killed with signal 11 (could be triggered by violating memory limits)
66 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 9 ms 1396 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -