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답안 #447964

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
447964 2021-07-28T09:49:13 Z keta_tsimakuridze Event Hopping 2 (JOI21_event2) C++14
100 / 100
 534 ms 57656 KB 
#include<bits/stdc++.h>
#define f first
#define s second
#define int long long
#define pii pair<int,pair<int,int> > 
using namespace std;
const int N=2e5+5,mod=1e10+7,LG = 22,inf = mod;
int t,n,k,l[N],r[N],mn[N],mx[N],parR[N][LG],parL[N][LG],Lg,h1[N],h[N],fix[N],f[N];
vector<int> Ans;
set<pair<int,int> > R;
set<pii >L;
pair<pair<int,int>,int> p[N];
 main(){
	cin>>n>>k;
	Lg = log2(n) + 1;
	for(int i=1;i<=n;i++){
		cin>>p[i].f.f>>p[i].f.s;
		l[i] = p[i].f.f;
		r[i] = p[i].f.s;
		p[i].s = i;
	}
	sort(p+1,p+n+1);
	p[n+1].f.s = 1e9 + 5;
	mn[n+1] = n+1;
	for(int i=n;i>=1;i--) {
		mn[i] = mn[i+1];
		if(p[i].f.s < p[mn[i]].f.s) mn[i] = i;
		int l = i+1, r = n,id = -1;
		while(l<=r) {
			int mid = (l+r)/2;
			if(p[mid].f.f >= p[i].f.s) {
				id = mid;
				r = mid - 1;
			}
			else l = mid + 1;
		}
		if(id > 0) {
			parR[p[i].s][0] =  p[mn[id]].s;
			h1[p[i].s] = h1[p[mn[id]].s] + 1;
			for(int j=1; j<=Lg; j++) parR[p[i].s][j] = parR[parR[p[i].s][j-1]][j-1];
		}
	}
	for(int i=1;i<=n;i++) {
		swap(p[i].f.f,p[i].f.s);
	}
	sort(p+1,p+n+1);
	p[0].f.s = 0;
	mx[0] = 0;
	for(int i=1;i<=n;i++) {
		mx[i] = mx[i-1];
		if(p[i].f.s > p[mx[i]].f.s) mx[i] = i;		
		int l = 1, r = i-1, id = -1;
		while(l<=r) {
			int mid = (l+r)/2;
			if(p[mid].f.f <= p[i].f.s) {
				id = mid;
				l = mid + 1;
			}
			else r = mid - 1;
		}		
		if(id > 0) {
			parL[p[i].s][0] = p[mx[id]].s;
			h[p[i].s] = h[p[mx[id]].s] + 1;
			
			for(int j=1; j<=Lg; j++) parL[p[i].s][j] = parL[parL[p[i].s][j-1]][j-1];
		}		
	}
	L.insert({-inf,{0,0}});
	R.insert({inf,0});
	R.insert({-inf,0});
	L.insert({inf,{0,0}});
	l[0] = inf;
	r[0] = 0;
	int all = 0;
	for(int i=1;i<=n;i++){
		int up = (*L.upper_bound({r[i],{0,0}})).f;
		int d = (*--R.upper_bound({l[i]+1,0})).f;
		if(r[(*--L.upper_bound({l[i]+1,{0,0}})).s.f] > l[i]) {
		continue;}
		
		if(l[(*R.upper_bound({r[i],0})).s] < r[i]) continue;
		if((*R.upper_bound({l[i] + 1,0})).f < r[i]) continue;
		
		int u = i;
		int ss =  (*L.upper_bound({r[i]-1,{0,0}})).s.s;
		int ans = 0;
		for(int j=Lg; j>=0; j--) {
			if(parR[u][j] && r[parR[u][j]] <= up) {
				ans += 1<<j;
				u = parR[u][j];
			}
		}
		int ans1 = ans;
		u = i;
		for(int j=Lg; j>=0; j--) {
			if(parL[u][j] && l[parL[u][j]] >= d) {
				ans += 1<<j;
				u = parL[u][j];
			}
		}
		
		if(all - ss + ans + 1>=k) {

			all = all - ss + ans + 1;
			pii p = (*L.upper_bound({r[i]-1,{0,0}}));
			L.erase(p);
			L.insert({p.f,{p.s.f,ans1}});
			L.insert({l[i],{i,ans-ans1}});
			R.insert({r[i],i});
		
			Ans.push_back(i);
			if(Ans.size()==k) break;
		}
	}
	if(!Ans.size()) cout<<-1;
	else {	
		int x = 0;
		for(int i=0;i<Ans.size();i++) cout<<Ans[i]<<" ";
	}
	
}

Compilation message

event2.cpp:13:2: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   13 |  main(){
      |  ^~~~
event2.cpp: In function 'int main()':
event2.cpp:112:17: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
  112 |    if(Ans.size()==k) break;
      |       ~~~~~~~~~~^~~
event2.cpp:118:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  118 |   for(int i=0;i<Ans.size();i++) cout<<Ans[i]<<" ";
      |               ~^~~~~~~~~~~
event2.cpp:117:7: warning: unused variable 'x' [-Wunused-variable]
  117 |   int x = 0;
      |       ^

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 379 ms 54756 KB Output is correct
5 Correct 392 ms 54008 KB Output is correct
6 Correct 362 ms 53352 KB Output is correct
7 Correct 334 ms 52128 KB Output is correct
8 Correct 380 ms 54768 KB Output is correct
9 Correct 368 ms 54160 KB Output is correct
10 Correct 349 ms 53384 KB Output is correct
11 Correct 336 ms 52156 KB Output is correct
12 Correct 297 ms 49712 KB Output is correct
13 Correct 325 ms 49320 KB Output is correct
14 Correct 301 ms 49020 KB Output is correct
15 Correct 264 ms 48272 KB Output is correct
16 Correct 195 ms 43624 KB Output is correct
17 Correct 190 ms 43440 KB Output is correct
18 Correct 180 ms 43300 KB Output is correct
19 Correct 161 ms 41928 KB Output is correct
20 Correct 159 ms 42012 KB Output is correct
21 Correct 156 ms 42032 KB Output is correct
22 Correct 159 ms 41608 KB Output is correct
23 Correct 157 ms 41540 KB Output is correct
24 Correct 159 ms 41664 KB Output is correct
25 Correct 166 ms 39876 KB Output is correct
26 Correct 156 ms 39696 KB Output is correct
27 Correct 157 ms 39716 KB Output is correct
28 Correct 186 ms 41820 KB Output is correct
29 Correct 190 ms 41864 KB Output is correct
30 Correct 165 ms 41796 KB Output is correct
31 Correct 157 ms 41800 KB Output is correct
32 Correct 166 ms 41540 KB Output is correct
33 Correct 173 ms 39672 KB Output is correct
34 Correct 234 ms 46524 KB Output is correct
35 Correct 203 ms 44964 KB Output is correct
36 Correct 176 ms 43332 KB Output is correct
37 Correct 285 ms 48676 KB Output is correct
38 Correct 288 ms 48564 KB Output is correct
39 Correct 269 ms 48156 KB Output is correct
40 Correct 259 ms 47928 KB Output is correct
41 Correct 264 ms 47556 KB Output is correct
42 Correct 185 ms 41912 KB Output is correct
43 Correct 286 ms 48416 KB Output is correct
44 Correct 282 ms 48316 KB Output is correct
45 Correct 268 ms 47924 KB Output is correct
46 Correct 264 ms 47676 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 0 ms 332 KB Output is correct
23 Correct 0 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 0 ms 332 KB Output is correct
23 Correct 0 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 5 ms 1612 KB Output is correct
29 Correct 5 ms 1532 KB Output is correct
30 Correct 5 ms 1612 KB Output is correct
31 Correct 5 ms 1612 KB Output is correct
32 Correct 5 ms 1556 KB Output is correct
33 Correct 6 ms 1612 KB Output is correct
34 Correct 6 ms 1612 KB Output is correct
35 Correct 9 ms 1996 KB Output is correct
36 Correct 9 ms 1996 KB Output is correct
37 Correct 8 ms 1868 KB Output is correct
38 Correct 6 ms 1660 KB Output is correct
39 Correct 9 ms 1988 KB Output is correct
40 Correct 8 ms 1868 KB Output is correct
41 Correct 8 ms 1868 KB Output is correct
42 Correct 5 ms 1612 KB Output is correct
43 Correct 7 ms 1740 KB Output is correct
44 Correct 8 ms 1728 KB Output is correct
45 Correct 6 ms 1728 KB Output is correct
46 Correct 5 ms 1612 KB Output is correct
47 Correct 6 ms 1684 KB Output is correct
48 Correct 5 ms 1624 KB Output is correct
49 Correct 5 ms 1612 KB Output is correct
50 Correct 5 ms 1612 KB Output is correct
51 Correct 5 ms 1596 KB Output is correct
52 Correct 5 ms 1612 KB Output is correct
53 Correct 5 ms 1612 KB Output is correct
54 Correct 5 ms 1612 KB Output is correct
55 Correct 8 ms 1996 KB Output is correct
56 Correct 9 ms 1996 KB Output is correct
57 Correct 8 ms 1996 KB Output is correct
58 Correct 8 ms 1964 KB Output is correct
59 Correct 8 ms 1996 KB Output is correct
60 Correct 8 ms 1996 KB Output is correct
61 Correct 8 ms 1996 KB Output is correct
62 Correct 7 ms 1996 KB Output is correct
63 Correct 7 ms 1996 KB Output is correct
64 Correct 5 ms 1656 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 379 ms 54756 KB Output is correct
5 Correct 392 ms 54008 KB Output is correct
6 Correct 362 ms 53352 KB Output is correct
7 Correct 334 ms 52128 KB Output is correct
8 Correct 380 ms 54768 KB Output is correct
9 Correct 368 ms 54160 KB Output is correct
10 Correct 349 ms 53384 KB Output is correct
11 Correct 336 ms 52156 KB Output is correct
12 Correct 297 ms 49712 KB Output is correct
13 Correct 325 ms 49320 KB Output is correct
14 Correct 301 ms 49020 KB Output is correct
15 Correct 264 ms 48272 KB Output is correct
16 Correct 195 ms 43624 KB Output is correct
17 Correct 190 ms 43440 KB Output is correct
18 Correct 180 ms 43300 KB Output is correct
19 Correct 161 ms 41928 KB Output is correct
20 Correct 159 ms 42012 KB Output is correct
21 Correct 156 ms 42032 KB Output is correct
22 Correct 159 ms 41608 KB Output is correct
23 Correct 157 ms 41540 KB Output is correct
24 Correct 159 ms 41664 KB Output is correct
25 Correct 166 ms 39876 KB Output is correct
26 Correct 156 ms 39696 KB Output is correct
27 Correct 157 ms 39716 KB Output is correct
28 Correct 186 ms 41820 KB Output is correct
29 Correct 190 ms 41864 KB Output is correct
30 Correct 165 ms 41796 KB Output is correct
31 Correct 157 ms 41800 KB Output is correct
32 Correct 166 ms 41540 KB Output is correct
33 Correct 173 ms 39672 KB Output is correct
34 Correct 234 ms 46524 KB Output is correct
35 Correct 203 ms 44964 KB Output is correct
36 Correct 176 ms 43332 KB Output is correct
37 Correct 285 ms 48676 KB Output is correct
38 Correct 288 ms 48564 KB Output is correct
39 Correct 269 ms 48156 KB Output is correct
40 Correct 259 ms 47928 KB Output is correct
41 Correct 264 ms 47556 KB Output is correct
42 Correct 185 ms 41912 KB Output is correct
43 Correct 286 ms 48416 KB Output is correct
44 Correct 282 ms 48316 KB Output is correct
45 Correct 268 ms 47924 KB Output is correct
46 Correct 264 ms 47676 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 0 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 0 ms 332 KB Output is correct
52 Correct 0 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 0 ms 332 KB Output is correct
57 Correct 0 ms 332 KB Output is correct
58 Correct 0 ms 332 KB Output is correct
59 Correct 0 ms 332 KB Output is correct
60 Correct 0 ms 332 KB Output is correct
61 Correct 1 ms 332 KB Output is correct
62 Correct 0 ms 332 KB Output is correct
63 Correct 0 ms 332 KB Output is correct
64 Correct 0 ms 332 KB Output is correct
65 Correct 0 ms 332 KB Output is correct
66 Correct 1 ms 332 KB Output is correct
67 Correct 0 ms 332 KB Output is correct
68 Correct 0 ms 332 KB Output is correct
69 Correct 0 ms 332 KB Output is correct
70 Correct 0 ms 332 KB Output is correct
71 Correct 0 ms 332 KB Output is correct
72 Correct 0 ms 332 KB Output is correct
73 Correct 1 ms 332 KB Output is correct
74 Correct 5 ms 1612 KB Output is correct
75 Correct 5 ms 1532 KB Output is correct
76 Correct 5 ms 1612 KB Output is correct
77 Correct 5 ms 1612 KB Output is correct
78 Correct 5 ms 1556 KB Output is correct
79 Correct 6 ms 1612 KB Output is correct
80 Correct 6 ms 1612 KB Output is correct
81 Correct 9 ms 1996 KB Output is correct
82 Correct 9 ms 1996 KB Output is correct
83 Correct 8 ms 1868 KB Output is correct
84 Correct 6 ms 1660 KB Output is correct
85 Correct 9 ms 1988 KB Output is correct
86 Correct 8 ms 1868 KB Output is correct
87 Correct 8 ms 1868 KB Output is correct
88 Correct 5 ms 1612 KB Output is correct
89 Correct 7 ms 1740 KB Output is correct
90 Correct 8 ms 1728 KB Output is correct
91 Correct 6 ms 1728 KB Output is correct
92 Correct 5 ms 1612 KB Output is correct
93 Correct 6 ms 1684 KB Output is correct
94 Correct 5 ms 1624 KB Output is correct
95 Correct 5 ms 1612 KB Output is correct
96 Correct 5 ms 1612 KB Output is correct
97 Correct 5 ms 1596 KB Output is correct
98 Correct 5 ms 1612 KB Output is correct
99 Correct 5 ms 1612 KB Output is correct
100 Correct 5 ms 1612 KB Output is correct
101 Correct 8 ms 1996 KB Output is correct
102 Correct 9 ms 1996 KB Output is correct
103 Correct 8 ms 1996 KB Output is correct
104 Correct 8 ms 1964 KB Output is correct
105 Correct 8 ms 1996 KB Output is correct
106 Correct 8 ms 1996 KB Output is correct
107 Correct 8 ms 1996 KB Output is correct
108 Correct 7 ms 1996 KB Output is correct
109 Correct 7 ms 1996 KB Output is correct
110 Correct 5 ms 1656 KB Output is correct
111 Correct 224 ms 43844 KB Output is correct
112 Correct 222 ms 43996 KB Output is correct
113 Correct 221 ms 43768 KB Output is correct
114 Correct 213 ms 43740 KB Output is correct
115 Correct 213 ms 43696 KB Output is correct
116 Correct 231 ms 43648 KB Output is correct
117 Correct 229 ms 43660 KB Output is correct
118 Correct 534 ms 56572 KB Output is correct
119 Correct 512 ms 55480 KB Output is correct
120 Correct 365 ms 50108 KB Output is correct
121 Correct 313 ms 43708 KB Output is correct
122 Correct 428 ms 51780 KB Output is correct
123 Correct 400 ms 50876 KB Output is correct
124 Correct 373 ms 50108 KB Output is correct
125 Correct 297 ms 43816 KB Output is correct
126 Correct 266 ms 45424 KB Output is correct
127 Correct 249 ms 45252 KB Output is correct
128 Correct 248 ms 45364 KB Output is correct
129 Correct 243 ms 43716 KB Output is correct
130 Correct 228 ms 43932 KB Output is correct
131 Correct 216 ms 43972 KB Output is correct
132 Correct 213 ms 43856 KB Output is correct
133 Correct 224 ms 43696 KB Output is correct
134 Correct 205 ms 43904 KB Output is correct
135 Correct 202 ms 43784 KB Output is correct
136 Correct 195 ms 43736 KB Output is correct
137 Correct 211 ms 43716 KB Output is correct
138 Correct 190 ms 43740 KB Output is correct
139 Correct 194 ms 43716 KB Output is correct
140 Correct 190 ms 43844 KB Output is correct
141 Correct 203 ms 43808 KB Output is correct
142 Correct 389 ms 57596 KB Output is correct
143 Correct 395 ms 57648 KB Output is correct
144 Correct 412 ms 57656 KB Output is correct
145 Correct 378 ms 57560 KB Output is correct
146 Correct 370 ms 57140 KB Output is correct
147 Correct 367 ms 56892 KB Output is correct
148 Correct 364 ms 56636 KB Output is correct
149 Correct 354 ms 56376 KB Output is correct
150 Correct 355 ms 56120 KB Output is correct
151 Correct 335 ms 54716 KB Output is correct
152 Correct 180 ms 43792 KB Output is correct
153 Correct 380 ms 57608 KB Output is correct
154 Correct 384 ms 57404 KB Output is correct
155 Correct 382 ms 57012 KB Output is correct
156 Correct 370 ms 56724 KB Output is correct
157 Correct 356 ms 56464 KB Output is correct
158 Correct 354 ms 56144 KB Output is correct
159 Correct 331 ms 54724 KB Output is correct
160 Correct 181 ms 43720 KB Output is correct
161 Correct 389 ms 50768 KB Output is correct
162 Correct 351 ms 50440 KB Output is correct
163 Correct 337 ms 50112 KB Output is correct
164 Correct 343 ms 49888 KB Output is correct
165 Correct 326 ms 49628 KB Output is correct
166 Correct 192 ms 43708 KB Output is correct
167 Correct 297 ms 50428 KB Output is correct
168 Correct 286 ms 50236 KB Output is correct
169 Correct 274 ms 49972 KB Output is correct
170 Correct 278 ms 49520 KB Output is correct
171 Correct 273 ms 50000 KB Output is correct
172 Correct 273 ms 50628 KB Output is correct
173 Correct 443 ms 50644 KB Output is correct
174 Correct 422 ms 50696 KB Output is correct
175 Correct 452 ms 50492 KB Output is correct
176 Correct 389 ms 49328 KB Output is correct