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답안 #388414

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
388414 2021-04-11T11:55:08 Z ogibogi2004 별자리 3 (JOI20_constellation3) C++14
100 / 100
 698 ms 55824 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll MAXN=2e5+6;
ll n,m,sum;
struct star
{
	ll x,y,c;
	bool operator<(star const& other)const
	{
		return make_pair(y,c)>make_pair(other.y,other.c);
	}
};
struct DSU
{
	ll par[MAXN],sz[MAXN];
	void init()
	{
		for(ll i=1;i<MAXN;i++)
		{
			par[i]=i;sz[i]=1;
		}
	}
	ll getRoot(ll u)
	{
		if(par[u]==u)return u;
		return par[u]=getRoot(par[u]);
	}
	void join(ll p,ll q)
	{
		if(sz[p]>=sz[q])
		{
			par[q]=p;
			sz[p]+=sz[q];
		}
		else
		{
			par[p]=q;
			sz[q]+=sz[p];
		}
	}
}dsu;
struct segment_tree
{
	ll t[4*MAXN];
	ll lazy[4*MAXN];
	void init()
	{
		memset(t,0,sizeof(t));
		memset(lazy,0,sizeof(lazy));
	}
	void push(ll l,ll r,ll idx)
	{
		t[idx]+=lazy[idx];
		if(l!=r)
		{
			lazy[idx*2]+=lazy[idx];
			lazy[idx*2+1]+=lazy[idx];
		}
		lazy[idx]=0;
	}
	void update(ll l,ll r,ll idx,ll ql,ll qr,ll val)
	{
		push(l,r,idx);
		if(l>qr||r<ql)return;
		if(l>=ql&&r<=qr)
		{
			lazy[idx]+=val;
			push(l,r,idx);
			return;
		}
		ll mid=(l+r)/2;
		update(l,mid,idx*2,ql,qr,val);
		update(mid+1,r,idx*2+1,ql,qr,val);
		t[idx]=max(t[idx*2],t[idx*2+1]);
	}
	ll query(ll l,ll r,ll idx,ll ql,ll qr)
	{
		push(l,r,idx);
		if(l>qr||r<ql)return 0;
		if(l>=ql&&r<=qr)
		{
			return t[idx];
		}
		ll mid=(l+r)/2;
		return max(query(l,mid,idx*2,ql,qr),query(mid+1,r,idx*2+1,ql,qr));
	}
	void update(ll l,ll r,ll val)
	{
		update(1,n,1,l,r,val);
	}
	ll query(ll l,ll r)
	{
		return query(1,n,1,l,r);
	}
}tree;
ll a[MAXN];
vector<star>starsx[MAXN];
vector<star>starsy[MAXN];
vector<ll>jp[MAXN];
ll pr[MAXN];
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	dsu.init();tree.init();
	cin>>n;
	for(ll i=1;i<=n;i++)
	{
		cin>>a[i];
		if(i>1)jp[max(a[i],a[i-1])].push_back(i);
	}
	cin>>m;
	for(ll i=1;i<=m;i++)
	{
		ll x,y,c;
		cin>>x>>y>>c;sum+=c;
		starsx[x].push_back({x,y,c});
	}
	for(ll i=1;i<=n;i++)
	{
		vector<star>v1;
		sort(starsx[i].begin(),starsx[i].end());
		for(ll j=0;j<starsx[i].size();j++)
		{
			while(!v1.size()==0&&v1.back().c<starsx[i][j].c)
			{
				v1.pop_back();
			}
			v1.push_back(starsx[i][j]);
		}
		for(auto xd:v1)
		{
			starsy[xd.y].push_back(xd);
		}
	}
	for(ll i=1;i<=n;i++)
	{
		for(auto xd:starsy[i])
		{
			tree.update(xd.x,xd.x,xd.c-pr[xd.x]);
			pr[xd.x]=xd.c;
		}
		for(auto xd:jp[i])
		{
			ll e1=xd,e2=xd-1;
			ll r1=dsu.getRoot(e1);
			ll r2=dsu.getRoot(e2);
			ll mxl=tree.query(e2-dsu.sz[r2]+1,e2);
			ll mxr=tree.query(e1,e1+dsu.sz[r1]-1);
			tree.update(e2-dsu.sz[r2]+1,e2,mxr);
			tree.update(e1,e1+dsu.sz[r1]-1,mxl);
			dsu.join(r1,r2);
		}
	}
	cout<<sum-tree.query(1,n)<<endl;
return 0;
}

Compilation message

constellation3.cpp: In function 'int main()':
constellation3.cpp:125:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<star>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  125 |   for(ll j=0;j<starsx[i].size();j++)
      |              ~^~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 30080 KB Output is correct
2 Correct 15 ms 30040 KB Output is correct
3 Correct 15 ms 30080 KB Output is correct
4 Correct 15 ms 30076 KB Output is correct
5 Correct 15 ms 30108 KB Output is correct
6 Correct 16 ms 30084 KB Output is correct
7 Correct 15 ms 30028 KB Output is correct
8 Correct 16 ms 30028 KB Output is correct
9 Correct 16 ms 30028 KB Output is correct
10 Correct 16 ms 30044 KB Output is correct
11 Correct 15 ms 30032 KB Output is correct
12 Correct 15 ms 30028 KB Output is correct
13 Correct 17 ms 30088 KB Output is correct
14 Correct 16 ms 30016 KB Output is correct
15 Correct 16 ms 30064 KB Output is correct
16 Correct 15 ms 30032 KB Output is correct
17 Correct 15 ms 30028 KB Output is correct
18 Correct 16 ms 30004 KB Output is correct
19 Correct 15 ms 30028 KB Output is correct
20 Correct 15 ms 30016 KB Output is correct
21 Correct 16 ms 30116 KB Output is correct
22 Correct 16 ms 30028 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 30080 KB Output is correct
2 Correct 15 ms 30040 KB Output is correct
3 Correct 15 ms 30080 KB Output is correct
4 Correct 15 ms 30076 KB Output is correct
5 Correct 15 ms 30108 KB Output is correct
6 Correct 16 ms 30084 KB Output is correct
7 Correct 15 ms 30028 KB Output is correct
8 Correct 16 ms 30028 KB Output is correct
9 Correct 16 ms 30028 KB Output is correct
10 Correct 16 ms 30044 KB Output is correct
11 Correct 15 ms 30032 KB Output is correct
12 Correct 15 ms 30028 KB Output is correct
13 Correct 17 ms 30088 KB Output is correct
14 Correct 16 ms 30016 KB Output is correct
15 Correct 16 ms 30064 KB Output is correct
16 Correct 15 ms 30032 KB Output is correct
17 Correct 15 ms 30028 KB Output is correct
18 Correct 16 ms 30004 KB Output is correct
19 Correct 15 ms 30028 KB Output is correct
20 Correct 15 ms 30016 KB Output is correct
21 Correct 16 ms 30116 KB Output is correct
22 Correct 16 ms 30028 KB Output is correct
23 Correct 18 ms 30208 KB Output is correct
24 Correct 18 ms 30192 KB Output is correct
25 Correct 19 ms 30188 KB Output is correct
26 Correct 19 ms 30180 KB Output is correct
27 Correct 19 ms 30288 KB Output is correct
28 Correct 19 ms 30216 KB Output is correct
29 Correct 19 ms 30284 KB Output is correct
30 Correct 19 ms 30200 KB Output is correct
31 Correct 19 ms 30284 KB Output is correct
32 Correct 19 ms 30208 KB Output is correct
33 Correct 19 ms 30284 KB Output is correct
34 Correct 19 ms 30284 KB Output is correct
35 Correct 18 ms 30284 KB Output is correct
36 Correct 18 ms 30284 KB Output is correct
37 Correct 19 ms 30284 KB Output is correct
38 Correct 18 ms 30264 KB Output is correct
39 Correct 19 ms 30248 KB Output is correct
40 Correct 19 ms 30284 KB Output is correct
41 Correct 18 ms 30344 KB Output is correct
42 Correct 18 ms 30344 KB Output is correct
43 Correct 19 ms 30248 KB Output is correct
44 Correct 19 ms 30248 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 30080 KB Output is correct
2 Correct 15 ms 30040 KB Output is correct
3 Correct 15 ms 30080 KB Output is correct
4 Correct 15 ms 30076 KB Output is correct
5 Correct 15 ms 30108 KB Output is correct
6 Correct 16 ms 30084 KB Output is correct
7 Correct 15 ms 30028 KB Output is correct
8 Correct 16 ms 30028 KB Output is correct
9 Correct 16 ms 30028 KB Output is correct
10 Correct 16 ms 30044 KB Output is correct
11 Correct 15 ms 30032 KB Output is correct
12 Correct 15 ms 30028 KB Output is correct
13 Correct 17 ms 30088 KB Output is correct
14 Correct 16 ms 30016 KB Output is correct
15 Correct 16 ms 30064 KB Output is correct
16 Correct 15 ms 30032 KB Output is correct
17 Correct 15 ms 30028 KB Output is correct
18 Correct 16 ms 30004 KB Output is correct
19 Correct 15 ms 30028 KB Output is correct
20 Correct 15 ms 30016 KB Output is correct
21 Correct 16 ms 30116 KB Output is correct
22 Correct 16 ms 30028 KB Output is correct
23 Correct 18 ms 30208 KB Output is correct
24 Correct 18 ms 30192 KB Output is correct
25 Correct 19 ms 30188 KB Output is correct
26 Correct 19 ms 30180 KB Output is correct
27 Correct 19 ms 30288 KB Output is correct
28 Correct 19 ms 30216 KB Output is correct
29 Correct 19 ms 30284 KB Output is correct
30 Correct 19 ms 30200 KB Output is correct
31 Correct 19 ms 30284 KB Output is correct
32 Correct 19 ms 30208 KB Output is correct
33 Correct 19 ms 30284 KB Output is correct
34 Correct 19 ms 30284 KB Output is correct
35 Correct 18 ms 30284 KB Output is correct
36 Correct 18 ms 30284 KB Output is correct
37 Correct 19 ms 30284 KB Output is correct
38 Correct 18 ms 30264 KB Output is correct
39 Correct 19 ms 30248 KB Output is correct
40 Correct 19 ms 30284 KB Output is correct
41 Correct 18 ms 30344 KB Output is correct
42 Correct 18 ms 30344 KB Output is correct
43 Correct 19 ms 30248 KB Output is correct
44 Correct 19 ms 30248 KB Output is correct
45 Correct 698 ms 53476 KB Output is correct
46 Correct 656 ms 53312 KB Output is correct
47 Correct 673 ms 53704 KB Output is correct
48 Correct 673 ms 53144 KB Output is correct
49 Correct 689 ms 53284 KB Output is correct
50 Correct 640 ms 52944 KB Output is correct
51 Correct 656 ms 53212 KB Output is correct
52 Correct 663 ms 53728 KB Output is correct
53 Correct 683 ms 53236 KB Output is correct
54 Correct 621 ms 54468 KB Output is correct
55 Correct 592 ms 54272 KB Output is correct
56 Correct 600 ms 54012 KB Output is correct
57 Correct 573 ms 54204 KB Output is correct
58 Correct 551 ms 51640 KB Output is correct
59 Correct 557 ms 51860 KB Output is correct
60 Correct 416 ms 55620 KB Output is correct
61 Correct 485 ms 52248 KB Output is correct
62 Correct 629 ms 55824 KB Output is correct
63 Correct 481 ms 51336 KB Output is correct
64 Correct 478 ms 51480 KB Output is correct
65 Correct 653 ms 55416 KB Output is correct
66 Correct 475 ms 51964 KB Output is correct