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답안 #405593

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
405593 2021-05-16T14:56:28 Z dvdg6566 Event Hopping 2 (JOI21_event2) C++14
100 / 100
 277 ms 25304 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pi;
typedef vector<ll> vi;
typedef vector<pi> vpi;
#define pb emplace_back
#define f first 
#define s second
#define mp make_pair
#define SZ(x) (ll)x.size()
#define ALL(x) x.begin(),x.end()
#define lb lower_bound
#define ub upper_bound

const int MAXN = 200100;
const int MAXK = 19;
int L[MAXN][MAXK];
vpi V;
vi des;
int N,a,b,M,K;

int eval(int x,int y){
	int ans=0;
	for(int k=MAXK-1;k>=0;--k)if(x<=y){
		if(L[x][k]-1<=y){
			x = L[x][k];
			ans += (1<<k);
		}
	}
	// while(x<=y&&L[x][0]-1<=y){ // fits within (x,y)
	// 	x = L[x][0];
	// 	++ans;
	// }
	return ans;
}

set<pair<pi,int>> S;

int main(){
	cin>>N>>K;
	for(int i=0;i<N;++i){
		cin>>a>>b;
		--b;
		V.pb(a,b);
		des.pb(a);des.pb(b);
	}
	sort(ALL(des));des.resize(unique(ALL(des))-des.begin());
	for(auto &i:V){
		i.f = lb(ALL(des),i.f) - des.begin();
		i.s = lb(ALL(des),i.s) - des.begin();
	}
	vpi T;
	for(auto i:V)T.pb(i);
	sort(ALL(T));
	M=SZ(des)-1; // run from 0 to M-1	
	ll rc=1e9;
	for(int k=0;k<MAXK;++k)L[M+1][k]=1e9;

	for(int i=M;i>=0;--i){
		while(SZ(T)&&T.back().f>=i){
			rc=min(rc,T.back().s);
			T.pop_back();
		}
		L[i][0]=rc+1;
		for(int k=1;k<MAXK;++k){
			if(L[i][k-1] >= 1e9){
				L[i][k]=1e9;
				continue;
			}
			int t=L[i][k-1];
			L[i][k] = L[t][k-1];
		}
	}
	// cerr<<L[0][MAXK-1]<<'\n';
	assert(L[0][MAXK-1]>=1e9);
	int tot=eval(0,M);
	// cerr<<tot<<'\n';
	if(tot<K){
		cout<<-1<<'\n';
		return 0;
	}
	
	S.insert(mp(mp(-1,-1),-1));
	S.insert(mp(mp(0,M),tot));

	vi ans;
	for(int i=0;i<N;++i){
		a = V[i].f;
		b = V[i].s;
		auto x = --S.ub(mp(mp(a,1e9),-1e9));
		pi rng=x->f;
		int w=x->s;
		if(rng.f>a)assert(0);
		if(rng.s<b)continue;
		// rng.f, a, b, rng.s
		int c=eval(rng.f,a-1);
		int d=eval(b+1,rng.s);
		int nv=c+d;
		if(tot-w+1+nv<K)continue; // cannot take
		tot = tot-w+1+nv;
		ans.pb(i+1);
		S.erase(x);
		if(c)S.insert(mp(mp(rng.f,a-1),c));
		if(d)S.insert(mp(mp(b+1,rng.s),d));
		// cerr<<"Ins "<<i+1<<'\n';
	}

	while(SZ(ans)>K)ans.pop_back();
	for(auto i:ans)cout<<i<<'\n';
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 169 ms 22140 KB Output is correct
5 Correct 173 ms 24008 KB Output is correct
6 Correct 163 ms 24016 KB Output is correct
7 Correct 175 ms 23996 KB Output is correct
8 Correct 170 ms 24096 KB Output is correct
9 Correct 170 ms 24008 KB Output is correct
10 Correct 168 ms 24144 KB Output is correct
11 Correct 167 ms 23936 KB Output is correct
12 Correct 162 ms 23056 KB Output is correct
13 Correct 167 ms 23020 KB Output is correct
14 Correct 165 ms 23036 KB Output is correct
15 Correct 192 ms 23004 KB Output is correct
16 Correct 146 ms 22048 KB Output is correct
17 Correct 144 ms 22076 KB Output is correct
18 Correct 165 ms 22132 KB Output is correct
19 Correct 140 ms 21940 KB Output is correct
20 Correct 141 ms 21816 KB Output is correct
21 Correct 143 ms 21872 KB Output is correct
22 Correct 142 ms 21944 KB Output is correct
23 Correct 140 ms 21924 KB Output is correct
24 Correct 157 ms 21852 KB Output is correct
25 Correct 145 ms 21916 KB Output is correct
26 Correct 141 ms 21824 KB Output is correct
27 Correct 143 ms 21880 KB Output is correct
28 Correct 143 ms 21812 KB Output is correct
29 Correct 143 ms 21876 KB Output is correct
30 Correct 140 ms 21944 KB Output is correct
31 Correct 143 ms 21924 KB Output is correct
32 Correct 142 ms 22044 KB Output is correct
33 Correct 138 ms 22000 KB Output is correct
34 Correct 162 ms 22936 KB Output is correct
35 Correct 166 ms 22800 KB Output is correct
36 Correct 161 ms 22796 KB Output is correct
37 Correct 156 ms 22912 KB Output is correct
38 Correct 156 ms 22940 KB Output is correct
39 Correct 157 ms 22920 KB Output is correct
40 Correct 157 ms 22988 KB Output is correct
41 Correct 156 ms 22852 KB Output is correct
42 Correct 158 ms 21920 KB Output is correct
43 Correct 168 ms 22916 KB Output is correct
44 Correct 170 ms 22816 KB Output is correct
45 Correct 170 ms 22812 KB Output is correct
46 Correct 175 ms 22828 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 284 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 284 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 5 ms 972 KB Output is correct
29 Correct 5 ms 972 KB Output is correct
30 Correct 5 ms 972 KB Output is correct
31 Correct 6 ms 972 KB Output is correct
32 Correct 5 ms 972 KB Output is correct
33 Correct 5 ms 972 KB Output is correct
34 Correct 5 ms 972 KB Output is correct
35 Correct 7 ms 1004 KB Output is correct
36 Correct 8 ms 992 KB Output is correct
37 Correct 6 ms 972 KB Output is correct
38 Correct 5 ms 972 KB Output is correct
39 Correct 7 ms 984 KB Output is correct
40 Correct 7 ms 896 KB Output is correct
41 Correct 6 ms 972 KB Output is correct
42 Correct 7 ms 972 KB Output is correct
43 Correct 6 ms 924 KB Output is correct
44 Correct 6 ms 972 KB Output is correct
45 Correct 6 ms 972 KB Output is correct
46 Correct 5 ms 972 KB Output is correct
47 Correct 5 ms 972 KB Output is correct
48 Correct 5 ms 928 KB Output is correct
49 Correct 5 ms 972 KB Output is correct
50 Correct 6 ms 972 KB Output is correct
51 Correct 5 ms 872 KB Output is correct
52 Correct 6 ms 972 KB Output is correct
53 Correct 5 ms 924 KB Output is correct
54 Correct 6 ms 972 KB Output is correct
55 Correct 5 ms 972 KB Output is correct
56 Correct 6 ms 976 KB Output is correct
57 Correct 7 ms 988 KB Output is correct
58 Correct 7 ms 976 KB Output is correct
59 Correct 6 ms 972 KB Output is correct
60 Correct 6 ms 972 KB Output is correct
61 Correct 5 ms 972 KB Output is correct
62 Correct 5 ms 972 KB Output is correct
63 Correct 5 ms 972 KB Output is correct
64 Correct 5 ms 972 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 169 ms 22140 KB Output is correct
5 Correct 173 ms 24008 KB Output is correct
6 Correct 163 ms 24016 KB Output is correct
7 Correct 175 ms 23996 KB Output is correct
8 Correct 170 ms 24096 KB Output is correct
9 Correct 170 ms 24008 KB Output is correct
10 Correct 168 ms 24144 KB Output is correct
11 Correct 167 ms 23936 KB Output is correct
12 Correct 162 ms 23056 KB Output is correct
13 Correct 167 ms 23020 KB Output is correct
14 Correct 165 ms 23036 KB Output is correct
15 Correct 192 ms 23004 KB Output is correct
16 Correct 146 ms 22048 KB Output is correct
17 Correct 144 ms 22076 KB Output is correct
18 Correct 165 ms 22132 KB Output is correct
19 Correct 140 ms 21940 KB Output is correct
20 Correct 141 ms 21816 KB Output is correct
21 Correct 143 ms 21872 KB Output is correct
22 Correct 142 ms 21944 KB Output is correct
23 Correct 140 ms 21924 KB Output is correct
24 Correct 157 ms 21852 KB Output is correct
25 Correct 145 ms 21916 KB Output is correct
26 Correct 141 ms 21824 KB Output is correct
27 Correct 143 ms 21880 KB Output is correct
28 Correct 143 ms 21812 KB Output is correct
29 Correct 143 ms 21876 KB Output is correct
30 Correct 140 ms 21944 KB Output is correct
31 Correct 143 ms 21924 KB Output is correct
32 Correct 142 ms 22044 KB Output is correct
33 Correct 138 ms 22000 KB Output is correct
34 Correct 162 ms 22936 KB Output is correct
35 Correct 166 ms 22800 KB Output is correct
36 Correct 161 ms 22796 KB Output is correct
37 Correct 156 ms 22912 KB Output is correct
38 Correct 156 ms 22940 KB Output is correct
39 Correct 157 ms 22920 KB Output is correct
40 Correct 157 ms 22988 KB Output is correct
41 Correct 156 ms 22852 KB Output is correct
42 Correct 158 ms 21920 KB Output is correct
43 Correct 168 ms 22916 KB Output is correct
44 Correct 170 ms 22816 KB Output is correct
45 Correct 170 ms 22812 KB Output is correct
46 Correct 175 ms 22828 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 1 ms 204 KB Output is correct
53 Correct 1 ms 204 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 1 ms 204 KB Output is correct
56 Correct 1 ms 204 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 1 ms 204 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 1 ms 204 KB Output is correct
67 Correct 1 ms 284 KB Output is correct
68 Correct 1 ms 204 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 1 ms 204 KB Output is correct
72 Correct 1 ms 204 KB Output is correct
73 Correct 1 ms 204 KB Output is correct
74 Correct 5 ms 972 KB Output is correct
75 Correct 5 ms 972 KB Output is correct
76 Correct 5 ms 972 KB Output is correct
77 Correct 6 ms 972 KB Output is correct
78 Correct 5 ms 972 KB Output is correct
79 Correct 5 ms 972 KB Output is correct
80 Correct 5 ms 972 KB Output is correct
81 Correct 7 ms 1004 KB Output is correct
82 Correct 8 ms 992 KB Output is correct
83 Correct 6 ms 972 KB Output is correct
84 Correct 5 ms 972 KB Output is correct
85 Correct 7 ms 984 KB Output is correct
86 Correct 7 ms 896 KB Output is correct
87 Correct 6 ms 972 KB Output is correct
88 Correct 7 ms 972 KB Output is correct
89 Correct 6 ms 924 KB Output is correct
90 Correct 6 ms 972 KB Output is correct
91 Correct 6 ms 972 KB Output is correct
92 Correct 5 ms 972 KB Output is correct
93 Correct 5 ms 972 KB Output is correct
94 Correct 5 ms 928 KB Output is correct
95 Correct 5 ms 972 KB Output is correct
96 Correct 6 ms 972 KB Output is correct
97 Correct 5 ms 872 KB Output is correct
98 Correct 6 ms 972 KB Output is correct
99 Correct 5 ms 924 KB Output is correct
100 Correct 6 ms 972 KB Output is correct
101 Correct 5 ms 972 KB Output is correct
102 Correct 6 ms 976 KB Output is correct
103 Correct 7 ms 988 KB Output is correct
104 Correct 7 ms 976 KB Output is correct
105 Correct 6 ms 972 KB Output is correct
106 Correct 6 ms 972 KB Output is correct
107 Correct 5 ms 972 KB Output is correct
108 Correct 5 ms 972 KB Output is correct
109 Correct 5 ms 972 KB Output is correct
110 Correct 5 ms 972 KB Output is correct
111 Correct 197 ms 21888 KB Output is correct
112 Correct 175 ms 21912 KB Output is correct
113 Correct 175 ms 21916 KB Output is correct
114 Correct 181 ms 21896 KB Output is correct
115 Correct 170 ms 21884 KB Output is correct
116 Correct 169 ms 21916 KB Output is correct
117 Correct 172 ms 21984 KB Output is correct
118 Correct 250 ms 25100 KB Output is correct
119 Correct 277 ms 25304 KB Output is correct
120 Correct 223 ms 23576 KB Output is correct
121 Correct 188 ms 22036 KB Output is correct
122 Correct 236 ms 23712 KB Output is correct
123 Correct 231 ms 23668 KB Output is correct
124 Correct 250 ms 23660 KB Output is correct
125 Correct 175 ms 21832 KB Output is correct
126 Correct 197 ms 22156 KB Output is correct
127 Correct 193 ms 22224 KB Output is correct
128 Correct 184 ms 22148 KB Output is correct
129 Correct 169 ms 21836 KB Output is correct
130 Correct 181 ms 21920 KB Output is correct
131 Correct 181 ms 22012 KB Output is correct
132 Correct 174 ms 21952 KB Output is correct
133 Correct 173 ms 21944 KB Output is correct
134 Correct 173 ms 21916 KB Output is correct
135 Correct 172 ms 21856 KB Output is correct
136 Correct 191 ms 21924 KB Output is correct
137 Correct 203 ms 21872 KB Output is correct
138 Correct 167 ms 21848 KB Output is correct
139 Correct 177 ms 21992 KB Output is correct
140 Correct 163 ms 21816 KB Output is correct
141 Correct 169 ms 21900 KB Output is correct
142 Correct 169 ms 24228 KB Output is correct
143 Correct 180 ms 24180 KB Output is correct
144 Correct 170 ms 24080 KB Output is correct
145 Correct 170 ms 24088 KB Output is correct
146 Correct 175 ms 24216 KB Output is correct
147 Correct 166 ms 24004 KB Output is correct
148 Correct 169 ms 23960 KB Output is correct
149 Correct 170 ms 24124 KB Output is correct
150 Correct 175 ms 24076 KB Output is correct
151 Correct 165 ms 23940 KB Output is correct
152 Correct 143 ms 22016 KB Output is correct
153 Correct 169 ms 24096 KB Output is correct
154 Correct 170 ms 24100 KB Output is correct
155 Correct 168 ms 24064 KB Output is correct
156 Correct 169 ms 24168 KB Output is correct
157 Correct 179 ms 24076 KB Output is correct
158 Correct 213 ms 24188 KB Output is correct
159 Correct 169 ms 23976 KB Output is correct
160 Correct 144 ms 21832 KB Output is correct
161 Correct 239 ms 23464 KB Output is correct
162 Correct 222 ms 23456 KB Output is correct
163 Correct 266 ms 23524 KB Output is correct
164 Correct 233 ms 23404 KB Output is correct
165 Correct 234 ms 23408 KB Output is correct
166 Correct 156 ms 21924 KB Output is correct
167 Correct 179 ms 22940 KB Output is correct
168 Correct 175 ms 22996 KB Output is correct
169 Correct 182 ms 22812 KB Output is correct
170 Correct 179 ms 22820 KB Output is correct
171 Correct 132 ms 18596 KB Output is correct
172 Correct 156 ms 19248 KB Output is correct
173 Correct 257 ms 23448 KB Output is correct
174 Correct 240 ms 23516 KB Output is correct
175 Correct 231 ms 23452 KB Output is correct
176 Correct 232 ms 23388 KB Output is correct