oj.uz

Submission #947075

# Submission time Handle Problem Language Result Execution time Memory
947075 2024-03-15T13:10:03 Z vjudge1 Event Hopping 2 (JOI21_event2) C++17
100 / 100
 279 ms 66348 KB 
#include<bits/stdc++.h>
using namespace std;
const int maxn=200000+10,lg=20;
vector<long long>res;
long long n,k,sp[lg][maxn+10],dp[maxn],lnk[maxn],last[maxn];
pair<long long,long long>all[maxn];
vector<long long>alll[maxn],allr[maxn];
long long ted=0;
vector<pair<long long,long long>>allv;
set<pair<long long,long long>>inds;

long long callen(long long ind){
  	if(ind>=(int)allv.size()){
   	   return 0;
  	}
	long long l=allv[ind].first;
	auto x=inds.lower_bound(make_pair(l,l));
	long long bad=(*x).first;
	x--;
	long long ghabl=(*x).second;
	if(l<=ghabl){
		return 0;
	}
	if(lnk[l]>=bad||l>=bad){
		return 0;
	}
	long long ret=1;
	for(int i=lg-1;i>=0;i--){
		if(sp[i][l]<bad&&lnk[sp[i][l]]<bad){
			ret+=(1<<i);
			l=sp[i][l];
		}
	}
//	while(lnk[l]<bad&&l<bad){
//		ret++;
//		l=sp[0][l];
//	}
	return ret;
}

void vorod(){
	cin>>n>>k;
	vector<long long>allind;
	for(long long i=1;i<=n;i++){
		cin>>all[i].first>>all[i].second;
		all[i].second--;
		allind.push_back(all[i].first);
		allind.push_back(all[i].second);
	}
	sort(allind.begin(),allind.end());
	allind.resize(unique(allind.begin(),allind.end())-allind.begin());
	for(long long i=1;i<=n;i++){
		all[i].first=lower_bound(allind.begin(),allind.end(),all[i].first)-allind.begin();
		all[i].second=lower_bound(allind.begin(),allind.end(),all[i].second)-allind.begin();
		alll[all[i].first].push_back(i);
		allr[all[i].second].push_back(i);
	}
}
void pre(){
	inds.insert(make_pair(-1,-1));
	inds.insert(make_pair(maxn,maxn));
	set<pair<long long,long long>>st;
	for(long long i=0;i<maxn;i++){
		last[i]=maxn+2;
	}
	for(long long i=0;i<maxn;i++){
		long long mn=maxn+2;
		for(auto x:alll[i]){
			mn=min(mn,all[x].second);
		}
		while((long long)st.size()>0&&(*st.rbegin()).first>=mn){
			st.erase(*st.rbegin());
		}
		for(auto x:alll[i]){
			if(all[x].second==mn){
				st.insert(make_pair(all[x].second,x));
				mn=-1;
			}
		}
		for(auto x:allr[i]){
			if(st.count(make_pair(i,x))==1){
				st.erase(make_pair(i,x));
				allv.push_back(make_pair(all[x].first,all[x].second));
				last[all[x].first-1]=all[x].first;
				lnk[all[x].first]=all[x].second;
			}
		}
	}
	for(long long i=maxn-2;i>=0;i--){
		last[i]=min(last[i],last[i+1]);
	}
	for(long long i=0;i<maxn+9;i++){
		for(long long j=0;j<lg;j++){
			sp[j][i]=maxn+2;
		}
	}
	for(long long i=1;i<=n;i++){
		sp[0][all[i].first]=min(sp[0][all[i].first],last[lnk[all[i].first]]);
	}
	for(long long i=1;i<lg;i++){
		for(long long j=0;j<maxn;j++){
			sp[i][j]=sp[i-1][sp[i-1][j]];
		}
	}
	dp[0]=callen(0);
	ted+=dp[0];
}

bool eshy(long long l,long long r,long long ll,long long rr){
	if(l>ll){
		swap(l,ll);
		swap(r,rr);
	}
	return ll<=r;
}

bool esh(long long a,long long b){
	return eshy(all[a].first,all[a].second,all[b].first,all[b].second);
}

/*long long cal(){
	long long ret=0,r=-1;
	for(auto x:allv){
		long long f=1;
		auto z=inds.lower_bound(make_pair(x.first,x.first));
		if((long long)inds.size()>0&&(*inds.rbegin()).first>=x.first){
			if(eshy(x.first,x.second,(*z).first,(*z).second)){
				f=0;
			}
		}
		if((long long)inds.size()>0&&(*inds.begin()).first<x.first){
			z--;
			if(eshy(x.first,x.second,(*z).first,(*z).second)){
				f=0;
			}
		}
		if(x.first<=r||f==0){
			continue;
		}
		ret++;
		r=x.second;
	}
	return ret;
}*/

void ins(long long i){
  res.push_back(i);
	auto x=inds.lower_bound(make_pair(all[i].first,all[i].second));
	auto bad=*x;
	x--;
	auto ghabl=*x;
	long long p1=lower_bound(allv.begin(),allv.end(),make_pair(ghabl.second+1,-1ll))-allv.begin();
	long long p2=lower_bound(allv.begin(),allv.end(),make_pair(all[i].second+1,-1ll))-allv.begin();
	long long p3=lower_bound(allv.begin(),allv.end(),make_pair(bad.second+1,-1ll))-allv.begin();
	inds.insert(make_pair(all[i].first,all[i].second));
	if(p1!=p3){
		ted-=dp[p1];
	}
	dp[p1]=callen(p1);
	dp[p2]=callen(p2);
	if(p1!=p2){
		ted+=dp[p1];
	}
	if(p2!=p3){
		ted+=dp[p2];
	}
}

void erase(long long i){
  res.pop_back();
	inds.erase(make_pair(all[i].first,all[i].second));
	auto x=inds.lower_bound(make_pair(all[i].first,all[i].second));
	auto bad=*x;
	x--;
	auto ghabl=*x;
	long long p1=lower_bound(allv.begin(),allv.end(),make_pair(ghabl.second+1,-1ll))-allv.begin();
	long long p2=lower_bound(allv.begin(),allv.end(),make_pair(all[i].second+1,-1ll))-allv.begin();
	long long p3=lower_bound(allv.begin(),allv.end(),make_pair(bad.second+1,-1ll))-allv.begin();
	if(p1!=p2){
		ted-=dp[p1];
	}
	if(p2!=p3){
		ted-=dp[p2];
	}
	dp[p1]=callen(p1);
	dp[p2]=callen(p2);
	if(p1!=p3){
		ted+=dp[p1];
	}
}

void can(long long i){
	auto x=all[i];
	auto z=inds.lower_bound(make_pair(x.first,x.first));
	if((long long)inds.size()>0&&(*inds.rbegin()).first>=x.first){
		if(eshy(x.first,x.second,(*z).first,(*z).second)){
			return ;
		}
	}
	if((long long)inds.size()>0&&(*inds.begin()).first<x.first){
		z--;
		if(eshy(x.first,x.second,(*z).first,(*z).second)){
			return ;
		}
	}
	ins(i);
	if(ted+(long long)res.size()<k){
		erase(i);
	}
}

void solve(){
	for(long long i=1;i<=n;i++){
		if((long long)res.size()==k){
			break;
		}
		can(i);
	}
}

void khor(){
	if((long long)res.size()<k){
		cout<<-1<<"\n";
		return ;
	}
	for(auto x:res){
		cout<<x<<"\n";
	}
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	vorod();
	pre();
	solve();
	khor();
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 46936 KB Output is correct
2 Correct 13 ms 46684 KB Output is correct
3 Correct 13 ms 46756 KB Output is correct
4 Correct 127 ms 63900 KB Output is correct
5 Correct 122 ms 65436 KB Output is correct
6 Correct 118 ms 64896 KB Output is correct
7 Correct 114 ms 64340 KB Output is correct
8 Correct 130 ms 65688 KB Output is correct
9 Correct 119 ms 65900 KB Output is correct
10 Correct 131 ms 64924 KB Output is correct
11 Correct 109 ms 64412 KB Output is correct
12 Correct 103 ms 62976 KB Output is correct
13 Correct 100 ms 62616 KB Output is correct
14 Correct 105 ms 62532 KB Output is correct
15 Correct 104 ms 61928 KB Output is correct
16 Correct 77 ms 59060 KB Output is correct
17 Correct 75 ms 59088 KB Output is correct
18 Correct 73 ms 59112 KB Output is correct
19 Correct 73 ms 57764 KB Output is correct
20 Correct 72 ms 57780 KB Output is correct
21 Correct 71 ms 57772 KB Output is correct
22 Correct 75 ms 57268 KB Output is correct
23 Correct 72 ms 57236 KB Output is correct
24 Correct 87 ms 57252 KB Output is correct
25 Correct 92 ms 57076 KB Output is correct
26 Correct 77 ms 57204 KB Output is correct
27 Correct 78 ms 57256 KB Output is correct
28 Correct 101 ms 60584 KB Output is correct
29 Correct 115 ms 60588 KB Output is correct
30 Correct 98 ms 58996 KB Output is correct
31 Correct 101 ms 57772 KB Output is correct
32 Correct 107 ms 57704 KB Output is correct
33 Correct 107 ms 57016 KB Output is correct
34 Correct 85 ms 61340 KB Output is correct
35 Correct 75 ms 60680 KB Output is correct
36 Correct 67 ms 60756 KB Output is correct
37 Correct 95 ms 61568 KB Output is correct
38 Correct 91 ms 61396 KB Output is correct
39 Correct 101 ms 61316 KB Output is correct
40 Correct 88 ms 61088 KB Output is correct
41 Correct 94 ms 61136 KB Output is correct
42 Correct 117 ms 58980 KB Output is correct
43 Correct 106 ms 61596 KB Output is correct
44 Correct 112 ms 61332 KB Output is correct
45 Correct 99 ms 61236 KB Output is correct
46 Correct 108 ms 61084 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 46940 KB Output is correct
2 Correct 13 ms 46684 KB Output is correct
3 Correct 13 ms 46940 KB Output is correct
4 Correct 15 ms 46940 KB Output is correct
5 Correct 15 ms 46940 KB Output is correct
6 Correct 13 ms 46940 KB Output is correct
7 Correct 13 ms 46936 KB Output is correct
8 Correct 13 ms 46796 KB Output is correct
9 Correct 13 ms 46940 KB Output is correct
10 Correct 13 ms 46940 KB Output is correct
11 Correct 14 ms 46940 KB Output is correct
12 Correct 13 ms 46940 KB Output is correct
13 Correct 13 ms 46940 KB Output is correct
14 Correct 13 ms 46940 KB Output is correct
15 Correct 14 ms 46948 KB Output is correct
16 Correct 13 ms 46940 KB Output is correct
17 Correct 13 ms 46800 KB Output is correct
18 Correct 13 ms 46940 KB Output is correct
19 Correct 14 ms 46940 KB Output is correct
20 Correct 13 ms 46940 KB Output is correct
21 Correct 13 ms 46940 KB Output is correct
22 Correct 14 ms 46776 KB Output is correct
23 Correct 13 ms 46936 KB Output is correct
24 Correct 13 ms 46944 KB Output is correct
25 Correct 12 ms 46940 KB Output is correct
26 Correct 13 ms 46940 KB Output is correct
27 Correct 13 ms 46732 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 46940 KB Output is correct
2 Correct 13 ms 46684 KB Output is correct
3 Correct 13 ms 46940 KB Output is correct
4 Correct 15 ms 46940 KB Output is correct
5 Correct 15 ms 46940 KB Output is correct
6 Correct 13 ms 46940 KB Output is correct
7 Correct 13 ms 46936 KB Output is correct
8 Correct 13 ms 46796 KB Output is correct
9 Correct 13 ms 46940 KB Output is correct
10 Correct 13 ms 46940 KB Output is correct
11 Correct 14 ms 46940 KB Output is correct
12 Correct 13 ms 46940 KB Output is correct
13 Correct 13 ms 46940 KB Output is correct
14 Correct 13 ms 46940 KB Output is correct
15 Correct 14 ms 46948 KB Output is correct
16 Correct 13 ms 46940 KB Output is correct
17 Correct 13 ms 46800 KB Output is correct
18 Correct 13 ms 46940 KB Output is correct
19 Correct 14 ms 46940 KB Output is correct
20 Correct 13 ms 46940 KB Output is correct
21 Correct 13 ms 46940 KB Output is correct
22 Correct 14 ms 46776 KB Output is correct
23 Correct 13 ms 46936 KB Output is correct
24 Correct 13 ms 46944 KB Output is correct
25 Correct 12 ms 46940 KB Output is correct
26 Correct 13 ms 46940 KB Output is correct
27 Correct 13 ms 46732 KB Output is correct
28 Correct 15 ms 47196 KB Output is correct
29 Correct 15 ms 46940 KB Output is correct
30 Correct 15 ms 46940 KB Output is correct
31 Correct 18 ms 46940 KB Output is correct
32 Correct 15 ms 46940 KB Output is correct
33 Correct 16 ms 47076 KB Output is correct
34 Correct 16 ms 46940 KB Output is correct
35 Correct 17 ms 47196 KB Output is correct
36 Correct 17 ms 47196 KB Output is correct
37 Correct 17 ms 47248 KB Output is correct
38 Correct 17 ms 47272 KB Output is correct
39 Correct 17 ms 47196 KB Output is correct
40 Correct 17 ms 47212 KB Output is correct
41 Correct 16 ms 47196 KB Output is correct
42 Correct 17 ms 47112 KB Output is correct
43 Correct 16 ms 47244 KB Output is correct
44 Correct 16 ms 47192 KB Output is correct
45 Correct 18 ms 47196 KB Output is correct
46 Correct 17 ms 47072 KB Output is correct
47 Correct 18 ms 46940 KB Output is correct
48 Correct 18 ms 47172 KB Output is correct
49 Correct 15 ms 46940 KB Output is correct
50 Correct 17 ms 46940 KB Output is correct
51 Correct 15 ms 47184 KB Output is correct
52 Correct 15 ms 46936 KB Output is correct
53 Correct 15 ms 46940 KB Output is correct
54 Correct 16 ms 46936 KB Output is correct
55 Correct 15 ms 47196 KB Output is correct
56 Correct 16 ms 47292 KB Output is correct
57 Correct 18 ms 47244 KB Output is correct
58 Correct 16 ms 47192 KB Output is correct
59 Correct 15 ms 47304 KB Output is correct
60 Correct 16 ms 47196 KB Output is correct
61 Correct 16 ms 47176 KB Output is correct
62 Correct 16 ms 47192 KB Output is correct
63 Correct 15 ms 47192 KB Output is correct
64 Correct 16 ms 47196 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 46936 KB Output is correct
2 Correct 13 ms 46684 KB Output is correct
3 Correct 13 ms 46756 KB Output is correct
4 Correct 127 ms 63900 KB Output is correct
5 Correct 122 ms 65436 KB Output is correct
6 Correct 118 ms 64896 KB Output is correct
7 Correct 114 ms 64340 KB Output is correct
8 Correct 130 ms 65688 KB Output is correct
9 Correct 119 ms 65900 KB Output is correct
10 Correct 131 ms 64924 KB Output is correct
11 Correct 109 ms 64412 KB Output is correct
12 Correct 103 ms 62976 KB Output is correct
13 Correct 100 ms 62616 KB Output is correct
14 Correct 105 ms 62532 KB Output is correct
15 Correct 104 ms 61928 KB Output is correct
16 Correct 77 ms 59060 KB Output is correct
17 Correct 75 ms 59088 KB Output is correct
18 Correct 73 ms 59112 KB Output is correct
19 Correct 73 ms 57764 KB Output is correct
20 Correct 72 ms 57780 KB Output is correct
21 Correct 71 ms 57772 KB Output is correct
22 Correct 75 ms 57268 KB Output is correct
23 Correct 72 ms 57236 KB Output is correct
24 Correct 87 ms 57252 KB Output is correct
25 Correct 92 ms 57076 KB Output is correct
26 Correct 77 ms 57204 KB Output is correct
27 Correct 78 ms 57256 KB Output is correct
28 Correct 101 ms 60584 KB Output is correct
29 Correct 115 ms 60588 KB Output is correct
30 Correct 98 ms 58996 KB Output is correct
31 Correct 101 ms 57772 KB Output is correct
32 Correct 107 ms 57704 KB Output is correct
33 Correct 107 ms 57016 KB Output is correct
34 Correct 85 ms 61340 KB Output is correct
35 Correct 75 ms 60680 KB Output is correct
36 Correct 67 ms 60756 KB Output is correct
37 Correct 95 ms 61568 KB Output is correct
38 Correct 91 ms 61396 KB Output is correct
39 Correct 101 ms 61316 KB Output is correct
40 Correct 88 ms 61088 KB Output is correct
41 Correct 94 ms 61136 KB Output is correct
42 Correct 117 ms 58980 KB Output is correct
43 Correct 106 ms 61596 KB Output is correct
44 Correct 112 ms 61332 KB Output is correct
45 Correct 99 ms 61236 KB Output is correct
46 Correct 108 ms 61084 KB Output is correct
47 Correct 13 ms 46940 KB Output is correct
48 Correct 13 ms 46684 KB Output is correct
49 Correct 13 ms 46940 KB Output is correct
50 Correct 15 ms 46940 KB Output is correct
51 Correct 15 ms 46940 KB Output is correct
52 Correct 13 ms 46940 KB Output is correct
53 Correct 13 ms 46936 KB Output is correct
54 Correct 13 ms 46796 KB Output is correct
55 Correct 13 ms 46940 KB Output is correct
56 Correct 13 ms 46940 KB Output is correct
57 Correct 14 ms 46940 KB Output is correct
58 Correct 13 ms 46940 KB Output is correct
59 Correct 13 ms 46940 KB Output is correct
60 Correct 13 ms 46940 KB Output is correct
61 Correct 14 ms 46948 KB Output is correct
62 Correct 13 ms 46940 KB Output is correct
63 Correct 13 ms 46800 KB Output is correct
64 Correct 13 ms 46940 KB Output is correct
65 Correct 14 ms 46940 KB Output is correct
66 Correct 13 ms 46940 KB Output is correct
67 Correct 13 ms 46940 KB Output is correct
68 Correct 14 ms 46776 KB Output is correct
69 Correct 13 ms 46936 KB Output is correct
70 Correct 13 ms 46944 KB Output is correct
71 Correct 12 ms 46940 KB Output is correct
72 Correct 13 ms 46940 KB Output is correct
73 Correct 13 ms 46732 KB Output is correct
74 Correct 15 ms 47196 KB Output is correct
75 Correct 15 ms 46940 KB Output is correct
76 Correct 15 ms 46940 KB Output is correct
77 Correct 18 ms 46940 KB Output is correct
78 Correct 15 ms 46940 KB Output is correct
79 Correct 16 ms 47076 KB Output is correct
80 Correct 16 ms 46940 KB Output is correct
81 Correct 17 ms 47196 KB Output is correct
82 Correct 17 ms 47196 KB Output is correct
83 Correct 17 ms 47248 KB Output is correct
84 Correct 17 ms 47272 KB Output is correct
85 Correct 17 ms 47196 KB Output is correct
86 Correct 17 ms 47212 KB Output is correct
87 Correct 16 ms 47196 KB Output is correct
88 Correct 17 ms 47112 KB Output is correct
89 Correct 16 ms 47244 KB Output is correct
90 Correct 16 ms 47192 KB Output is correct
91 Correct 18 ms 47196 KB Output is correct
92 Correct 17 ms 47072 KB Output is correct
93 Correct 18 ms 46940 KB Output is correct
94 Correct 18 ms 47172 KB Output is correct
95 Correct 15 ms 46940 KB Output is correct
96 Correct 17 ms 46940 KB Output is correct
97 Correct 15 ms 47184 KB Output is correct
98 Correct 15 ms 46936 KB Output is correct
99 Correct 15 ms 46940 KB Output is correct
100 Correct 16 ms 46936 KB Output is correct
101 Correct 15 ms 47196 KB Output is correct
102 Correct 16 ms 47292 KB Output is correct
103 Correct 18 ms 47244 KB Output is correct
104 Correct 16 ms 47192 KB Output is correct
105 Correct 15 ms 47304 KB Output is correct
106 Correct 16 ms 47196 KB Output is correct
107 Correct 16 ms 47176 KB Output is correct
108 Correct 16 ms 47192 KB Output is correct
109 Correct 15 ms 47192 KB Output is correct
110 Correct 16 ms 47196 KB Output is correct
111 Correct 136 ms 56992 KB Output is correct
112 Correct 110 ms 56984 KB Output is correct
113 Correct 111 ms 56988 KB Output is correct
114 Correct 127 ms 57004 KB Output is correct
115 Correct 116 ms 57180 KB Output is correct
116 Correct 149 ms 57004 KB Output is correct
117 Correct 153 ms 56980 KB Output is correct
118 Correct 238 ms 65648 KB Output is correct
119 Correct 279 ms 64920 KB Output is correct
120 Correct 171 ms 61912 KB Output is correct
121 Correct 240 ms 60748 KB Output is correct
122 Correct 208 ms 62872 KB Output is correct
123 Correct 192 ms 62468 KB Output is correct
124 Correct 185 ms 62224 KB Output is correct
125 Correct 224 ms 60560 KB Output is correct
126 Correct 157 ms 59052 KB Output is correct
127 Correct 158 ms 59240 KB Output is correct
128 Correct 136 ms 59052 KB Output is correct
129 Correct 202 ms 59036 KB Output is correct
130 Correct 132 ms 57912 KB Output is correct
131 Correct 121 ms 57756 KB Output is correct
132 Correct 120 ms 57752 KB Output is correct
133 Correct 216 ms 57968 KB Output is correct
134 Correct 124 ms 57240 KB Output is correct
135 Correct 129 ms 57264 KB Output is correct
136 Correct 121 ms 57400 KB Output is correct
137 Correct 164 ms 57356 KB Output is correct
138 Correct 110 ms 57240 KB Output is correct
139 Correct 108 ms 57252 KB Output is correct
140 Correct 107 ms 57256 KB Output is correct
141 Correct 154 ms 57308 KB Output is correct
142 Correct 152 ms 66204 KB Output is correct
143 Correct 142 ms 66308 KB Output is correct
144 Correct 128 ms 66208 KB Output is correct
145 Correct 108 ms 66204 KB Output is correct
146 Correct 105 ms 65972 KB Output is correct
147 Correct 108 ms 66000 KB Output is correct
148 Correct 128 ms 65712 KB Output is correct
149 Correct 104 ms 65688 KB Output is correct
150 Correct 103 ms 65404 KB Output is correct
151 Correct 97 ms 64672 KB Output is correct
152 Correct 105 ms 60844 KB Output is correct
153 Correct 110 ms 66348 KB Output is correct
154 Correct 109 ms 66128 KB Output is correct
155 Correct 110 ms 65928 KB Output is correct
156 Correct 112 ms 65732 KB Output is correct
157 Correct 105 ms 65688 KB Output is correct
158 Correct 105 ms 65404 KB Output is correct
159 Correct 99 ms 64792 KB Output is correct
160 Correct 115 ms 61392 KB Output is correct
161 Correct 182 ms 62516 KB Output is correct
162 Correct 179 ms 62272 KB Output is correct
163 Correct 188 ms 62188 KB Output is correct
164 Correct 172 ms 62092 KB Output is correct
165 Correct 164 ms 61856 KB Output is correct
166 Correct 115 ms 58852 KB Output is correct
167 Correct 107 ms 61452 KB Output is correct
168 Correct 99 ms 61260 KB Output is correct
169 Correct 97 ms 61088 KB Output is correct
170 Correct 97 ms 61096 KB Output is correct
171 Correct 92 ms 62100 KB Output is correct
172 Correct 96 ms 62360 KB Output is correct
173 Correct 206 ms 62360 KB Output is correct
174 Correct 255 ms 62332 KB Output is correct
175 Correct 198 ms 62360 KB Output is correct
176 Correct 166 ms 61596 KB Output is correct