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#224692#5441. Quartz CollectionZSH_ZSH#WA 1ms7980kbC++143.6kb2023-10-23 09:33:372023-10-23 09:33:38

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你现在查看的是最新测评结果

  • [2023-10-23 09:33:38]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:7980kb
  • [2023-10-23 09:33:37]
  • 提交

answer

#include<bits/stdc++.h>
#define rep(i,a,b) for (register int i=(a);i<=(b);i++)
#define drep(i,a,b) for (register int i=(a);i>=(b);i--)
typedef long long ll;
using namespace std;

const int N=300010;

int n,a[N],b[N],m;

struct info
{
	int ls,rs,rnd,tag,val,X,size;
	ll sum;
}t[N];
inline void push_up(int x)
{
	t[x].sum=t[x].val;
	if (t[x].ls) t[x].sum+=t[t[x].ls].sum;
	if (t[x].rs) t[x].sum+=t[t[x].rs].sum;
	t[x].size=1;
	if (t[x].ls) t[x].size+=t[t[x].ls].size;
	if (t[x].rs) t[x].size+=t[t[x].rs].size;
}
void setcov(int node)
{
	t[node].tag^=1;
	t[node].val=-t[node].val;
	t[node].sum=-t[node].sum;
}
inline void push_down(int x)
{
	if (t[x].tag)
	{
		if (t[x].ls) setcov(t[x].ls);
		if (t[x].rs) setcov(t[x].rs);
		t[x].tag=0;
	}
}
array<int,2> split(int x,int X)
{
	if (!x) return {0,0};
	push_down(x);
	if (t[x].X<=X)
	{
		auto rs=split(t[x].rs,X);
		t[x].rs=rs[0];
		push_up(x);
		return {x,rs[1]};
	}
	else
	{
		auto ls=split(t[x].ls,X);
		t[x].ls=ls[1];
		push_up(x);
		return {ls[0],x};
	}
}
array<int,2> splitsz(int x,int sz)
{
	if (!x) return {0,0};
	push_down(x);
	if (t[t[x].ls].size+1<=sz)
	{
		auto rs=split(t[x].rs,sz-t[t[x].ls].size-1);
		t[x].rs=rs[0];
		push_up(x);
		return {x,rs[1]};
	}
	else
	{
		auto ls=split(t[x].ls,sz);
		t[x].ls=ls[1];
		push_up(x);
		return {ls[0],x};
	}
}

int merge(int x,int y)
{
	if (!x||!y) return x+y;
	push_down(x);
	push_down(y);
	if (t[x].rnd<t[y].rnd)
	{
		t[x].rs=merge(t[x].rs,y);
		push_up(x);
		return x;
	}
	else
	{
		t[y].ls=merge(x,t[y].ls);
		push_up(y);
		return y;
	}
}
mt19937 rng(time(0));
int rt[5],cnt;

map<int,int> mp;
void ins(int x)
{
	mp[x]++;
	if (x<=0)
	{
		array<int,2> s[4];
		rep(i,0,3) s[i]=split(rt[i],x);
		t[++cnt].rnd=rng();
		t[cnt].X=x;
		t[cnt].val=x;
		t[cnt].sum=x;
		t[cnt].size=1;
		int id=0;
		rep(i,0,3) id+=t[s[i][0]].size;
		id++; id%=4;
		s[id][0]=merge(s[id][0],cnt);
		rep(i,0,3) rt[i]=merge(s[i][0],s[(i+3)%4][1]);
	}
	else
	{
		auto s=split(rt[4],x);
		t[++cnt].rnd=rng();
		t[cnt].X=x;
		t[cnt].val=t[cnt].sum=((t[s[0]].size%2==1)?x:-x);
		t[cnt].size=1;
		if (s[1]) setcov(s[1]);
		rt[4]=merge(merge(s[0],cnt),s[1]);
	}
}
void del(int x)
{
	assert(mp[x]);
	mp[x]--;
	if (x<=0)
	{
		array<int,2> s[4];
		rep(i,0,3) s[i]=split(rt[i],x);
		int id=0;
		rep(i,0,3) id+=t[s[i][0]].size;
		id%=4;
		{
			auto ss=splitsz(s[id][0],t[s[id][0]].size-1);
			s[id][0]=ss[0];
		}
		rep(i,0,3) rt[i]=merge(s[i][0],s[(i+1)%4][1]);
	}
	else
	{
		assert(t[rt[4]].size); 
//		{
//			auto sss=splitsz(rt[4],t[rt[4]].size-1);
//			assert(t[sss[1]].size==1);
//			assert(t[sss[1]].X>=x);
//			rt[4]=merge(sss[0],sss[1]); 
//		}
		auto s=split(rt[4],x);
		auto ss=splitsz(s[0],t[s[0]].size-1);
		if (s[1]) setcov(s[1]);
		rt[4]=merge(ss[0],s[1]);
	}
}

ll xns;
void solve()
{
	ll ans=xns;
	ans+=t[rt[0]].sum+t[rt[1]].sum; 
	ans-=t[rt[2]].sum+t[rt[3]].sum; 
	int sz=0;
	rep(i,0,3) sz+=t[rt[i]].size;
	sz%=2;
	if (sz==0)
	{
		ans-=t[rt[4]].sum;
	}
	else ans+=t[rt[4]].sum;
	printf("%lld\n",ans/2);
}

int main()
{
	ios::sync_with_stdio(false); cin.tie(0);
	
	cin>>n>>m;
	rep(i,1,n) cin>>a[i]>>b[i],a[i]*=2,b[i]*=2;
	
	rep(i,1,n)
	{
		xns+=(a[i]+b[i])/2;
		ins((a[i]-b[i])/2);
	}
	solve();
	
	rep(i,1,m)
	{
		int t,A,B; cin>>t>>A>>B;
		A*=2; B*=2;
		
		xns-=((a[t]+b[t])/2);
		del((a[t]-b[t])/2);
		
		a[t]=A,b[t]=B;
		xns+=((a[t]+b[t])/2);
		ins((a[t]-b[t])/2);
		solve();
	}
	
	return 0;
}
/*
4 5
2 4
5 7
1 7
2 1
4 5 2
1 6 2
4 4 3
2 1 3
3 6 6

*/

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 5996kb

input:

4 5
2 4
5 7
1 7
2 1
4 5 2
1 6 2
4 4 3
2 1 3
3 6 6

output:

13
14
15
14
10
13

result:

ok 6 numbers

Test #2:

score: 0
Accepted
time: 1ms
memory: 7980kb

input:

1 1
1 1
1 1 1

output:

1
1

result:

ok 2 number(s): "1 1"

Test #3:

score: -100
Wrong Answer
time: 1ms
memory: 6028kb

input:

100 100
6 7
100 8
5 61
5 75
59 65
51 47
83 37
34 54
87 46
4 26
21 87
12 97
86 68
60 11
62 76
14 83
29 31
91 62
57 80
47 75
85 97
62 77
91 86
14 25
48 77
83 65
39 61
78 77
45 46
90 74
100 91
86 98
55 5
84 42
91 69
100 4
74 98
60 37
75 44
41 12
15 34
36 1
99 16
7 87
36 26
79 42
41 84
17 98
72 16
38 55...

output:

5109
5070
5091
5043
4977
4971
4928
4940
5030
5030
5082
4983
4737
4702
4730
4855
4906
4906
4895
4815
4905
4761
4696
4604
4609
4681
4709
4653
4760
4727
4576
4680
4689
4743
4763
4740
4734
4699
4758
4774
4863
4868
4793
4801
4822
4877
4776
4867
4780
4822
4788
4708
4647
4715
4687
4646
4736
4619
4603
4622
...

result:

wrong answer 2nd numbers differ - expected: '5065', found: '5070'