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Submission #357885

# Submission time Handle Problem Language Result Execution time Memory
357885 2021-01-24T21:57:33 Z ogibogi2004 Street Lamps (APIO19_street_lamps) C++14
100 / 100
 1951 ms 66092 KB 
#include<bits/stdc++.h>
using namespace std;
const int MAXN=3e5+6;
struct BIT
{
	int a[MAXN];
	void update(int idx,int val)
	{
		for(;idx<MAXN;idx+=idx&(-idx))
		{
			a[idx]+=val;
		}
	}
	int query(int idx)
	{
		int ret=0;
		for(;idx>0;idx-=idx&(-idx))
		{
			ret+=a[idx];
		}
		return ret;
	}
}t1,t2;
int ans[MAXN];
struct point
{
	int x,y,z,ind,val;
	bool operator<(point const& other)const
	{
		if(x!=other.x)return x<other.x;
		if(y!=other.y)return y<other.y;
		return z<other.z;
	}
};
bool cmp(point p1,point p2)
{
	if(p1.y!=p2.y)return p1.y<p2.y;
	if(p1.z!=p2.z)return p1.z>p2.z;
	return p1.ind==0;
}
vector<point>v;
void dq(int l,int r)
{
	if(l+1==r)return;
	int mid=(l+r)/2;
	dq(l,mid);
	dq(mid,r);
	vector<point>tmp;
	vector<pair<int,int> >changes;
	int i1=l,i2=mid;
	while(i1<mid&&i2<r)
	{
		if(cmp(v[i1],v[i2]))
		{
			tmp.push_back(v[i1]);
			t1.update(v[i1].z,v[i1].val);
			if(v[i1].val>0)t2.update(v[i1].z,-1);
			if(v[i1].val<0)t2.update(v[i1].z,+1);
			changes.push_back({v[i1].z,v[i1].val});
			i1++;
		}
		else
		{
			tmp.push_back(v[i2]);
			//cout<<v[i2].ind<<" "<<t.query(MAXN-1)<<" "<<t.query(v[i2].z-1)<<endl;
			ans[v[i2].ind]+=(t1.query(MAXN-1)-t1.query(v[i2].z-1))+v[i2].x*(t2.query(MAXN-1)-t2.query(v[i2].z-1));
			i2++;
		}
	}
	while(i1<mid)
	{
		tmp.push_back(v[i1]);
		i1++;
	}
	while(i2<r)
	{
		tmp.push_back(v[i2]);
		ans[v[i2].ind]+=(t1.query(MAXN-1)-t1.query(v[i2].z-1))+v[i2].x*(t2.query(MAXN-1)-t2.query(v[i2].z-1));
		i2++;
	}
	for(int i=0;i<tmp.size();i++)v[l+i]=tmp[i];
	for(auto xd:changes)
	{
		t1.update(xd.first,-xd.second);
		if(xd.second>0)t2.update(xd.first,+1);
		if(xd.second<0)t2.update(xd.first,-1);
	}
}
set<pair<int,int> >segments;
bool lit[MAXN];
#define time aver
int n,q,time;
void pog_insert(int l,int r)
{
	v.push_back({time,l,r,0,-time});
	segments.insert({l,r});
}
void pog_erase(int l,int r)
{
	v.push_back({time,l,r,0,+time});
	segments.erase(make_pair(l,r));
}
void toggle(int i)
{
	if(lit[i]==1)
	{
		auto tt=segments.lower_bound({i+1,-69});
		tt--;
		int l=(*tt).first,r=(*tt).second;
		if(l<=i-1)pog_insert(l,i-1);
		if(i+1<=r)pog_insert(i+1,r);
		pog_erase(l,r);
		lit[i]=0;
	}
	else
	{
		if(!lit[i-1]&&!lit[i+1])
		{
			pog_insert(i,i);
		}
		else if(!lit[i-1]&&lit[i+1])
		{
			auto tt=segments.lower_bound({i,-69});
			int l=(*tt).first,r=(*tt).second;
			pog_erase(l,r);
			pog_insert(i,r);
		}
		else if(lit[i-1]&&!lit[i+1])
		{
			auto tt=segments.lower_bound({i,-69});
			tt--;
			int l=(*tt).first,r=(*tt).second;
			pog_erase(l,r);
			pog_insert(l,i);
		}
		else
		{
			auto tt=segments.lower_bound({i,-69});
			int l1=(*tt).first,r1=(*tt).second;
			tt--;
			int l2=(*tt).first,r2=(*tt).second;
			pog_erase(l1,r1);
			pog_erase(l2,r2);
			pog_insert(l2,r1);
		}
		lit[i]=!lit[i];
	}
}
int main()
{
	cin>>n>>q;
	time++;
	for(int i=1;i<=n;i++)
	{
		char c;cin>>c;
		if(c=='1')toggle(i);
	}
	int cnt=0;
	for(int i=1;i<=q;i++)
	{
		time++;
		string op;
		cin>>op;
		if(op=="toggle")
		{
			int x;
			cin>>x;
			toggle(x);
		}
		else
		{
			cnt++;
			int a,b;
			cin>>a>>b;b--;
			v.push_back({time,a,b,cnt,0});
		}
	}
	sort(v.begin(),v.end());
	/*for(int i=0;i<v.size();i++)
	{
		cout<<v[i].x<<" "<<v[i].y<<" "<<v[i].z<<" "<<v[i].ind<<" "<<v[i].val<<endl;
	}*/
	dq(0,v.size());
	/*cout<<endl<<endl;
	for(int i=0;i<v.size();i++)
	{
		cout<<v[i].x<<" "<<v[i].y<<" "<<v[i].z<<" "<<v[i].ind<<" "<<v[i].val<<endl;
	}*/
	for(int i=1;i<=cnt;i++)
	{
		cout<<ans[i]<<"\n";
	}
	//cout<<endl;
return 0;
}

Compilation message

street_lamps.cpp: In function 'void dq(int, int)':
street_lamps.cpp:81:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |  for(int i=0;i<tmp.size();i++)v[l+i]=tmp[i];
      |              ~^~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 492 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1039 ms 32284 KB Output is correct
2 Correct 1061 ms 32476 KB Output is correct
3 Correct 1076 ms 33140 KB Output is correct
4 Correct 1686 ms 59308 KB Output is correct
5 Correct 1796 ms 62928 KB Output is correct
6 Correct 1699 ms 60372 KB Output is correct
7 Correct 769 ms 30664 KB Output is correct
8 Correct 1352 ms 65964 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 616 KB Output is correct
2 Correct 5 ms 620 KB Output is correct
3 Correct 5 ms 620 KB Output is correct
4 Correct 4 ms 620 KB Output is correct
5 Correct 1546 ms 54220 KB Output is correct
6 Correct 1673 ms 58060 KB Output is correct
7 Correct 1812 ms 63100 KB Output is correct
8 Correct 1384 ms 66032 KB Output is correct
9 Correct 465 ms 18884 KB Output is correct
10 Correct 520 ms 25220 KB Output is correct
11 Correct 516 ms 25348 KB Output is correct
12 Correct 770 ms 30840 KB Output is correct
13 Correct 1375 ms 66092 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 768 KB Output is correct
2 Correct 4 ms 620 KB Output is correct
3 Correct 5 ms 620 KB Output is correct
4 Correct 5 ms 620 KB Output is correct
5 Correct 1236 ms 55060 KB Output is correct
6 Correct 1495 ms 57612 KB Output is correct
7 Correct 1680 ms 60144 KB Output is correct
8 Correct 1951 ms 63872 KB Output is correct
9 Correct 1240 ms 35136 KB Output is correct
10 Correct 1381 ms 47176 KB Output is correct
11 Correct 1199 ms 34912 KB Output is correct
12 Correct 1389 ms 47184 KB Output is correct
13 Correct 1207 ms 34960 KB Output is correct
14 Correct 1377 ms 47476 KB Output is correct
15 Correct 775 ms 30808 KB Output is correct
16 Correct 1360 ms 65860 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1039 ms 32284 KB Output is correct
9 Correct 1061 ms 32476 KB Output is correct
10 Correct 1076 ms 33140 KB Output is correct
11 Correct 1686 ms 59308 KB Output is correct
12 Correct 1796 ms 62928 KB Output is correct
13 Correct 1699 ms 60372 KB Output is correct
14 Correct 769 ms 30664 KB Output is correct
15 Correct 1352 ms 65964 KB Output is correct
16 Correct 4 ms 616 KB Output is correct
17 Correct 5 ms 620 KB Output is correct
18 Correct 5 ms 620 KB Output is correct
19 Correct 4 ms 620 KB Output is correct
20 Correct 1546 ms 54220 KB Output is correct
21 Correct 1673 ms 58060 KB Output is correct
22 Correct 1812 ms 63100 KB Output is correct
23 Correct 1384 ms 66032 KB Output is correct
24 Correct 465 ms 18884 KB Output is correct
25 Correct 520 ms 25220 KB Output is correct
26 Correct 516 ms 25348 KB Output is correct
27 Correct 770 ms 30840 KB Output is correct
28 Correct 1375 ms 66092 KB Output is correct
29 Correct 4 ms 768 KB Output is correct
30 Correct 4 ms 620 KB Output is correct
31 Correct 5 ms 620 KB Output is correct
32 Correct 5 ms 620 KB Output is correct
33 Correct 1236 ms 55060 KB Output is correct
34 Correct 1495 ms 57612 KB Output is correct
35 Correct 1680 ms 60144 KB Output is correct
36 Correct 1951 ms 63872 KB Output is correct
37 Correct 1240 ms 35136 KB Output is correct
38 Correct 1381 ms 47176 KB Output is correct
39 Correct 1199 ms 34912 KB Output is correct
40 Correct 1389 ms 47184 KB Output is correct
41 Correct 1207 ms 34960 KB Output is correct
42 Correct 1377 ms 47476 KB Output is correct
43 Correct 775 ms 30808 KB Output is correct
44 Correct 1360 ms 65860 KB Output is correct
45 Correct 675 ms 24336 KB Output is correct
46 Correct 694 ms 25248 KB Output is correct
47 Correct 890 ms 31084 KB Output is correct
48 Correct 1658 ms 59476 KB Output is correct
49 Correct 590 ms 27076 KB Output is correct
50 Correct 586 ms 27196 KB Output is correct
51 Correct 596 ms 27332 KB Output is correct
52 Correct 588 ms 27692 KB Output is correct
53 Correct 590 ms 27728 KB Output is correct
54 Correct 592 ms 27824 KB Output is correct