답안 #386312

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
386312	2021-04-06T10:49:28 Z	myrcella	Event Hopping 2 (JOI21_event2)	C++17	100 / 100	348 ms	34168 KB

event2

//by szh
#include<bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pii pair<int,int>
#define pll pair<long long,long long>
#define pb push_back
#define debug(x) cerr<<#x<<"="<<x<<endl
#define pq priority_queue
#define inf 0x3f
#define rep(i,a,b) for (int i=a;i<(b);i++)
#define MP make_pair
#define SZ(x) (int(x.size()))
#define ll long long
#define mod 1000000007
#define ALL(x) x.begin(),x.end()
void inc(int &a,int b) {a=(a+b)%mod;}
void dec(int &a,int b) {a=(a-b+mod)%mod;}
int lowbit(int x) {return x&(-x);}
ll p0w(ll base,ll p) {ll ret=1;while(p>0){if (p%2ll==1ll) ret=ret*base%mod;base=base*base%mod;p/=2ll;}return ret;}

const int maxn=2e5+10;

int n,m;
map <int,int> mp;
pii seg[maxn];
int suf[maxn],nxt[maxn][20];
vector <int> ans;
set <pii> s;

int solve(int l,int r) {
	int res=0;
	for (int i=19;i>=0;i--) {
		if (nxt[l][i]<=r) {
			res+=(1<<i);
			l=nxt[l][i];
		}
	}
	return res;
}

int main() {
//	freopen("input.txt","r",stdin);	
	std::ios::sync_with_stdio(false);cin.tie();
	cin>>n>>m;
	rep(i,0,n) cin>>seg[i].fi>>seg[i].se,mp[seg[i].fi]=mp[seg[i].se]=1;
	int tot=0;
	for (auto it=mp.begin();it!=mp.end();it++) it->se=tot++;
	memset(suf,inf,sizeof(suf));
	memset(nxt,inf,sizeof(nxt));
	rep(i,0,n) seg[i]=MP(mp[seg[i].fi],mp[seg[i].se]),suf[seg[i].fi]=min(seg[i].se,suf[seg[i].fi]);
	for (int i=tot-1;i>=0;i--) suf[i]=min(suf[i+1],suf[i]);
	for (int i=tot-1;i>=0;i--) {
		nxt[i][0]=suf[i];
		for (int j=1;nxt[i][j-1]<maxn;j++) nxt[i][j]=nxt[nxt[i][j-1]][j-1];
	}
	s.insert(MP(0,tot-1));
	int cur=solve(0,tot-1);
	if (cur<m) {
		cout<<-1;
		return 0;
	}
	rep(i,0,n) {
		int l=seg[i].fi,r=seg[i].se;
		auto it=s.upper_bound(MP(l,mod));
		if (it==s.begin()) continue;
		it--;
		if ((*it).se<r) continue;
		int tmp=cur-solve((*it).fi,(*it).se)+solve((*it).fi,l)+solve(r,(*it).se)+1;
		if (tmp>=m) {
			s.insert(MP((*it).fi,l));
			s.insert(MP(r,(*it).se));
			s.erase(*it);
			cur=tmp;
			ans.pb(i+1);
			if (SZ(ans)==m) break;
		}
	}
	for (int &i:ans) cout<<i<<"\n";
	return 0;
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	16748 KB	Output is correct
2	Correct	10 ms	16748 KB	Output is correct
3	Correct	10 ms	16748 KB	Output is correct
4	Correct	195 ms	34168 KB	Output is correct
5	Correct	183 ms	34020 KB	Output is correct
6	Correct	193 ms	33636 KB	Output is correct
7	Correct	169 ms	33256 KB	Output is correct
8	Correct	189 ms	34148 KB	Output is correct
9	Correct	183 ms	33892 KB	Output is correct
10	Correct	190 ms	33764 KB	Output is correct
11	Correct	173 ms	33124 KB	Output is correct
12	Correct	165 ms	32232 KB	Output is correct
13	Correct	164 ms	32108 KB	Output is correct
14	Correct	157 ms	31848 KB	Output is correct
15	Correct	149 ms	31464 KB	Output is correct
16	Correct	116 ms	29676 KB	Output is correct
17	Correct	114 ms	29548 KB	Output is correct
18	Correct	109 ms	29548 KB	Output is correct
19	Correct	105 ms	29036 KB	Output is correct
20	Correct	104 ms	29068 KB	Output is correct
21	Correct	109 ms	29036 KB	Output is correct
22	Correct	110 ms	28908 KB	Output is correct
23	Correct	110 ms	28908 KB	Output is correct
24	Correct	111 ms	29036 KB	Output is correct
25	Correct	127 ms	28908 KB	Output is correct
26	Correct	130 ms	28908 KB	Output is correct
27	Correct	132 ms	28944 KB	Output is correct
28	Correct	99 ms	28936 KB	Output is correct
29	Correct	101 ms	28908 KB	Output is correct
30	Correct	95 ms	28908 KB	Output is correct
31	Correct	105 ms	29036 KB	Output is correct
32	Correct	108 ms	28908 KB	Output is correct
33	Correct	125 ms	28908 KB	Output is correct
34	Correct	137 ms	30824 KB	Output is correct
35	Correct	127 ms	30316 KB	Output is correct
36	Correct	110 ms	29548 KB	Output is correct
37	Correct	171 ms	31740 KB	Output is correct
38	Correct	171 ms	31592 KB	Output is correct
39	Correct	172 ms	31464 KB	Output is correct
40	Correct	167 ms	31464 KB	Output is correct
41	Correct	169 ms	31292 KB	Output is correct
42	Correct	101 ms	28908 KB	Output is correct
43	Correct	155 ms	31768 KB	Output is correct
44	Correct	149 ms	31464 KB	Output is correct
45	Correct	148 ms	31464 KB	Output is correct
46	Correct	152 ms	31336 KB	Output is correct

Subtask #2
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	16748 KB	Output is correct
2	Correct	10 ms	16748 KB	Output is correct
3	Correct	10 ms	16748 KB	Output is correct
4	Correct	10 ms	16748 KB	Output is correct
5	Correct	10 ms	16748 KB	Output is correct
6	Correct	11 ms	16748 KB	Output is correct
7	Correct	10 ms	16768 KB	Output is correct
8	Correct	10 ms	16748 KB	Output is correct
9	Correct	10 ms	16748 KB	Output is correct
10	Correct	10 ms	16748 KB	Output is correct
11	Correct	10 ms	16876 KB	Output is correct
12	Correct	10 ms	16876 KB	Output is correct
13	Correct	10 ms	16748 KB	Output is correct
14	Correct	11 ms	16748 KB	Output is correct
15	Correct	10 ms	16748 KB	Output is correct
16	Correct	10 ms	16876 KB	Output is correct
17	Correct	10 ms	16748 KB	Output is correct
18	Correct	10 ms	16748 KB	Output is correct
19	Correct	10 ms	16748 KB	Output is correct
20	Correct	11 ms	16876 KB	Output is correct
21	Correct	10 ms	16748 KB	Output is correct
22	Correct	10 ms	16748 KB	Output is correct
23	Correct	10 ms	16748 KB	Output is correct
24	Correct	10 ms	16748 KB	Output is correct
25	Correct	10 ms	16748 KB	Output is correct
26	Correct	10 ms	16748 KB	Output is correct
27	Correct	11 ms	16748 KB	Output is correct

Subtask #3
31.0 / 31.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	16748 KB	Output is correct
2	Correct	10 ms	16748 KB	Output is correct
3	Correct	10 ms	16748 KB	Output is correct
4	Correct	10 ms	16748 KB	Output is correct
5	Correct	10 ms	16748 KB	Output is correct
6	Correct	11 ms	16748 KB	Output is correct
7	Correct	10 ms	16768 KB	Output is correct
8	Correct	10 ms	16748 KB	Output is correct
9	Correct	10 ms	16748 KB	Output is correct
10	Correct	10 ms	16748 KB	Output is correct
11	Correct	10 ms	16876 KB	Output is correct
12	Correct	10 ms	16876 KB	Output is correct
13	Correct	10 ms	16748 KB	Output is correct
14	Correct	11 ms	16748 KB	Output is correct
15	Correct	10 ms	16748 KB	Output is correct
16	Correct	10 ms	16876 KB	Output is correct
17	Correct	10 ms	16748 KB	Output is correct
18	Correct	10 ms	16748 KB	Output is correct
19	Correct	10 ms	16748 KB	Output is correct
20	Correct	11 ms	16876 KB	Output is correct
21	Correct	10 ms	16748 KB	Output is correct
22	Correct	10 ms	16748 KB	Output is correct
23	Correct	10 ms	16748 KB	Output is correct
24	Correct	10 ms	16748 KB	Output is correct
25	Correct	10 ms	16748 KB	Output is correct
26	Correct	10 ms	16748 KB	Output is correct
27	Correct	11 ms	16748 KB	Output is correct
28	Correct	13 ms	17132 KB	Output is correct
29	Correct	13 ms	17132 KB	Output is correct
30	Correct	13 ms	17184 KB	Output is correct
31	Correct	13 ms	17132 KB	Output is correct
32	Correct	16 ms	17132 KB	Output is correct
33	Correct	13 ms	17132 KB	Output is correct
34	Correct	13 ms	17132 KB	Output is correct
35	Correct	15 ms	17388 KB	Output is correct
36	Correct	16 ms	17260 KB	Output is correct
37	Correct	15 ms	17260 KB	Output is correct
38	Correct	13 ms	17260 KB	Output is correct
39	Correct	15 ms	17260 KB	Output is correct
40	Correct	16 ms	17260 KB	Output is correct
41	Correct	15 ms	17260 KB	Output is correct
42	Correct	13 ms	17132 KB	Output is correct
43	Correct	14 ms	17260 KB	Output is correct
44	Correct	14 ms	17260 KB	Output is correct
45	Correct	14 ms	17132 KB	Output is correct
46	Correct	13 ms	17132 KB	Output is correct
47	Correct	14 ms	17132 KB	Output is correct
48	Correct	14 ms	17132 KB	Output is correct
49	Correct	13 ms	17132 KB	Output is correct
50	Correct	13 ms	17132 KB	Output is correct
51	Correct	15 ms	17260 KB	Output is correct
52	Correct	14 ms	17132 KB	Output is correct
53	Correct	13 ms	17132 KB	Output is correct
54	Correct	13 ms	17132 KB	Output is correct
55	Correct	14 ms	17260 KB	Output is correct
56	Correct	14 ms	17260 KB	Output is correct
57	Correct	14 ms	17260 KB	Output is correct
58	Correct	14 ms	17280 KB	Output is correct
59	Correct	13 ms	17132 KB	Output is correct
60	Correct	15 ms	17132 KB	Output is correct
61	Correct	13 ms	17132 KB	Output is correct
62	Correct	13 ms	17132 KB	Output is correct
63	Correct	13 ms	17132 KB	Output is correct
64	Correct	12 ms	17004 KB	Output is correct

Subtask #4
61.0 / 61.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	16748 KB	Output is correct
2	Correct	10 ms	16748 KB	Output is correct
3	Correct	10 ms	16748 KB	Output is correct
4	Correct	195 ms	34168 KB	Output is correct
5	Correct	183 ms	34020 KB	Output is correct
6	Correct	193 ms	33636 KB	Output is correct
7	Correct	169 ms	33256 KB	Output is correct
8	Correct	189 ms	34148 KB	Output is correct
9	Correct	183 ms	33892 KB	Output is correct
10	Correct	190 ms	33764 KB	Output is correct
11	Correct	173 ms	33124 KB	Output is correct
12	Correct	165 ms	32232 KB	Output is correct
13	Correct	164 ms	32108 KB	Output is correct
14	Correct	157 ms	31848 KB	Output is correct
15	Correct	149 ms	31464 KB	Output is correct
16	Correct	116 ms	29676 KB	Output is correct
17	Correct	114 ms	29548 KB	Output is correct
18	Correct	109 ms	29548 KB	Output is correct
19	Correct	105 ms	29036 KB	Output is correct
20	Correct	104 ms	29068 KB	Output is correct
21	Correct	109 ms	29036 KB	Output is correct
22	Correct	110 ms	28908 KB	Output is correct
23	Correct	110 ms	28908 KB	Output is correct
24	Correct	111 ms	29036 KB	Output is correct
25	Correct	127 ms	28908 KB	Output is correct
26	Correct	130 ms	28908 KB	Output is correct
27	Correct	132 ms	28944 KB	Output is correct
28	Correct	99 ms	28936 KB	Output is correct
29	Correct	101 ms	28908 KB	Output is correct
30	Correct	95 ms	28908 KB	Output is correct
31	Correct	105 ms	29036 KB	Output is correct
32	Correct	108 ms	28908 KB	Output is correct
33	Correct	125 ms	28908 KB	Output is correct
34	Correct	137 ms	30824 KB	Output is correct
35	Correct	127 ms	30316 KB	Output is correct
36	Correct	110 ms	29548 KB	Output is correct
37	Correct	171 ms	31740 KB	Output is correct
38	Correct	171 ms	31592 KB	Output is correct
39	Correct	172 ms	31464 KB	Output is correct
40	Correct	167 ms	31464 KB	Output is correct
41	Correct	169 ms	31292 KB	Output is correct
42	Correct	101 ms	28908 KB	Output is correct
43	Correct	155 ms	31768 KB	Output is correct
44	Correct	149 ms	31464 KB	Output is correct
45	Correct	148 ms	31464 KB	Output is correct
46	Correct	152 ms	31336 KB	Output is correct
47	Correct	10 ms	16748 KB	Output is correct
48	Correct	10 ms	16748 KB	Output is correct
49	Correct	10 ms	16748 KB	Output is correct
50	Correct	10 ms	16748 KB	Output is correct
51	Correct	10 ms	16748 KB	Output is correct
52	Correct	11 ms	16748 KB	Output is correct
53	Correct	10 ms	16768 KB	Output is correct
54	Correct	10 ms	16748 KB	Output is correct
55	Correct	10 ms	16748 KB	Output is correct
56	Correct	10 ms	16748 KB	Output is correct
57	Correct	10 ms	16876 KB	Output is correct
58	Correct	10 ms	16876 KB	Output is correct
59	Correct	10 ms	16748 KB	Output is correct
60	Correct	11 ms	16748 KB	Output is correct
61	Correct	10 ms	16748 KB	Output is correct
62	Correct	10 ms	16876 KB	Output is correct
63	Correct	10 ms	16748 KB	Output is correct
64	Correct	10 ms	16748 KB	Output is correct
65	Correct	10 ms	16748 KB	Output is correct
66	Correct	11 ms	16876 KB	Output is correct
67	Correct	10 ms	16748 KB	Output is correct
68	Correct	10 ms	16748 KB	Output is correct
69	Correct	10 ms	16748 KB	Output is correct
70	Correct	10 ms	16748 KB	Output is correct
71	Correct	10 ms	16748 KB	Output is correct
72	Correct	10 ms	16748 KB	Output is correct
73	Correct	11 ms	16748 KB	Output is correct
74	Correct	13 ms	17132 KB	Output is correct
75	Correct	13 ms	17132 KB	Output is correct
76	Correct	13 ms	17184 KB	Output is correct
77	Correct	13 ms	17132 KB	Output is correct
78	Correct	16 ms	17132 KB	Output is correct
79	Correct	13 ms	17132 KB	Output is correct
80	Correct	13 ms	17132 KB	Output is correct
81	Correct	15 ms	17388 KB	Output is correct
82	Correct	16 ms	17260 KB	Output is correct
83	Correct	15 ms	17260 KB	Output is correct
84	Correct	13 ms	17260 KB	Output is correct
85	Correct	15 ms	17260 KB	Output is correct
86	Correct	16 ms	17260 KB	Output is correct
87	Correct	15 ms	17260 KB	Output is correct
88	Correct	13 ms	17132 KB	Output is correct
89	Correct	14 ms	17260 KB	Output is correct
90	Correct	14 ms	17260 KB	Output is correct
91	Correct	14 ms	17132 KB	Output is correct
92	Correct	13 ms	17132 KB	Output is correct
93	Correct	14 ms	17132 KB	Output is correct
94	Correct	14 ms	17132 KB	Output is correct
95	Correct	13 ms	17132 KB	Output is correct
96	Correct	13 ms	17132 KB	Output is correct
97	Correct	15 ms	17260 KB	Output is correct
98	Correct	14 ms	17132 KB	Output is correct
99	Correct	13 ms	17132 KB	Output is correct
100	Correct	13 ms	17132 KB	Output is correct
101	Correct	14 ms	17260 KB	Output is correct
102	Correct	14 ms	17260 KB	Output is correct
103	Correct	14 ms	17260 KB	Output is correct
104	Correct	14 ms	17280 KB	Output is correct
105	Correct	13 ms	17132 KB	Output is correct
106	Correct	15 ms	17132 KB	Output is correct
107	Correct	13 ms	17132 KB	Output is correct
108	Correct	13 ms	17132 KB	Output is correct
109	Correct	13 ms	17132 KB	Output is correct
110	Correct	12 ms	17004 KB	Output is correct
111	Correct	291 ms	29116 KB	Output is correct
112	Correct	273 ms	28908 KB	Output is correct
113	Correct	265 ms	28908 KB	Output is correct
114	Correct	267 ms	28908 KB	Output is correct
115	Correct	255 ms	28908 KB	Output is correct
116	Correct	269 ms	29036 KB	Output is correct
117	Correct	261 ms	28908 KB	Output is correct
118	Correct	319 ms	34148 KB	Output is correct
119	Correct	348 ms	33692 KB	Output is correct
120	Correct	292 ms	31720 KB	Output is correct
121	Correct	234 ms	28908 KB	Output is correct
122	Correct	293 ms	32104 KB	Output is correct
123	Correct	292 ms	31848 KB	Output is correct
124	Correct	281 ms	31464 KB	Output is correct
125	Correct	238 ms	28892 KB	Output is correct
126	Correct	280 ms	29632 KB	Output is correct
127	Correct	279 ms	29676 KB	Output is correct
128	Correct	270 ms	29548 KB	Output is correct
129	Correct	234 ms	29036 KB	Output is correct
130	Correct	264 ms	29036 KB	Output is correct
131	Correct	267 ms	29036 KB	Output is correct
132	Correct	265 ms	29036 KB	Output is correct
133	Correct	251 ms	28908 KB	Output is correct
134	Correct	270 ms	28908 KB	Output is correct
135	Correct	281 ms	28908 KB	Output is correct
136	Correct	275 ms	29004 KB	Output is correct
137	Correct	268 ms	29036 KB	Output is correct
138	Correct	263 ms	28908 KB	Output is correct
139	Correct	283 ms	28976 KB	Output is correct
140	Correct	289 ms	28908 KB	Output is correct
141	Correct	270 ms	29036 KB	Output is correct
142	Correct	191 ms	29932 KB	Output is correct
143	Correct	186 ms	30052 KB	Output is correct
144	Correct	187 ms	29924 KB	Output is correct
145	Correct	146 ms	29924 KB	Output is correct
146	Correct	143 ms	29796 KB	Output is correct
147	Correct	145 ms	29796 KB	Output is correct
148	Correct	154 ms	29560 KB	Output is correct
149	Correct	141 ms	29412 KB	Output is correct
150	Correct	139 ms	29284 KB	Output is correct
151	Correct	133 ms	28772 KB	Output is correct
152	Correct	73 ms	24300 KB	Output is correct
153	Correct	146 ms	29940 KB	Output is correct
154	Correct	146 ms	29924 KB	Output is correct
155	Correct	145 ms	29668 KB	Output is correct
156	Correct	150 ms	29540 KB	Output is correct
157	Correct	141 ms	29412 KB	Output is correct
158	Correct	141 ms	29412 KB	Output is correct
159	Correct	135 ms	28904 KB	Output is correct
160	Correct	74 ms	24172 KB	Output is correct
161	Correct	255 ms	29476 KB	Output is correct
162	Correct	246 ms	29288 KB	Output is correct
163	Correct	260 ms	29288 KB	Output is correct
164	Correct	244 ms	29032 KB	Output is correct
165	Correct	240 ms	28904 KB	Output is correct
166	Correct	105 ms	28908 KB	Output is correct
167	Correct	158 ms	31592 KB	Output is correct
168	Correct	153 ms	31464 KB	Output is correct
169	Correct	153 ms	31464 KB	Output is correct
170	Correct	151 ms	31336 KB	Output is correct
171	Correct	171 ms	31208 KB	Output is correct
172	Correct	166 ms	31720 KB	Output is correct
173	Correct	229 ms	27072 KB	Output is correct
174	Correct	229 ms	26984 KB	Output is correct
175	Correct	236 ms	26984 KB	Output is correct
176	Correct	204 ms	26600 KB	Output is correct

답안 #386312

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 1.0 / 1.0

Subtask #3 31.0 / 31.0

Subtask #4 61.0 / 61.0

Subtask #1
7.0 / 7.0

Subtask #2
1.0 / 1.0

Subtask #3
31.0 / 31.0

Subtask #4
61.0 / 61.0