oj.uz

답안 #386299

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
386299 2021-04-06T09:59:56 Z kshitij_sodani Event Hopping 2 (JOI21_event2) C++14
100 / 100
 387 ms 42344 KB 
//#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
#define endl '\n'


int n,k;
int aa[200001];
int bb[200001];
int ma=0;
//int tree[4*200001];
vector<int> pre[400001];
int re[400001][9];
/*void build(int no,int l,int r){
	if(l==r){
		if(mi[l]==-1){
			tree[no]=2*n+1;
		}
		else{
			tree[no]=mi[no];
		}
	}
	else{
		int mid=(l+r)/2;
		build(no*2+1,l,mid);
		build(no*2+2,mid+1,r);
		tree[no]=min(tree[no*2+1],tree[no*2+2]);
	}
}*/
int mi;
int cal(int aa,int bb){
	int xx=mi;
	if(aa>0){
		xx=re[aa-1][0];
	}
	if(xx>bb){
		return 0;
	}
	int ans2=1;
	
	for(int j=17;j>=0;j--){
		int cot;
		if(j%2==0){
			cot=re[xx][j/2];
		}
		else{
			cot=re[re[xx][(j/2)]][(j/2)];
		}

		if(cot<=bb){
			//cout<<xx<<":"<<j<<":"<<cot<<endl;
			xx=cot;
			ans2+=(1<<j);
		}
	}
	return ans2;
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>n>>k;
	map<int,int> ss3;
	mi=2*n;
	for(int i=0;i<n;i++){
		cin>>aa[i]>>bb[i];
		aa[i]*=2;
		aa[i]+=1;
		bb[i]*=2;
		ss3[aa[i]]++;
		ss3[bb[i]]++;
	}

	int ind=-1;
	/*for(int i=0;i<2*n;i++){
		tree[i]=2*n;
	}*/
	
	map<int,int> tt;
	for(auto j:ss3){
		ind++;
		tt[j.a]=ind;
	}
	
	for(int i=0;i<n;i++){
		aa[i]=tt[aa[i]];
		ma=max(ma,aa[i]);
		bb[i]=tt[bb[i]];
		pre[aa[i]].pb(bb[i]);
	/*	if(mi[aa[i]]==-1){
			mi[aa[i]]=bb[i];
		}
		mi[aa[i]]=min(mi[aa[i]],bb[i]);*/
	}
	/*for(int i=0;i<n;i++){
		cout<<aa[i]<<":"<<bb[i]<<endl;
	}*/

	for(int i=2*n-1;i>=0;i--){
		re[i][0]=mi;
		for(auto j:pre[i]){
			mi=min(mi,j);
		}
	}
	for(int i=0;i<2*n;i++){
		pre[i].clear();
	}
	for(int i=0;i<9;i++){
		re[2*n][i]=2*n;
	}
	for(int j=1;j<9;j+=1){
		for(int i=0;i<2*n;i++){
			re[i][j]=re[i][j-1];
			for(int k=0;k<3;k++){
				re[i][j]=re[re[i][j]][j-1];
			}
		//	re[i][j]=re[re[i][j-1]][j-1];
		}
	}
/*	for(int i=0;i<n;i++){
		cout<<re[i][0]<<",";
	}
	cout<<endl;*/
	int cur=cal(0,2*n-1);
	//k=cur;
	//cout<<cur<<":"<<endl;
	if(cur<k){
		cout<<-1<<endl;
		return 0;
	}
	set<pair<int,int>> ss;
	ss.insert({0,2*n-1});
	vector<int> ans;

	for(int i=0;i<n;i++){
		if(ans.size()==k){
			break;
		}
		auto j=ss.upper_bound({aa[i],2*n});
		if(j==ss.begin()){
			continue;
		}
		j--;
		pair<int,int> no=*j;
		if((aa[i]>=no.a and bb[i]<=no.b)){
			//cout<<i<<"::"<<endl;
			int cot=cur-cal(no.a,no.b);
			if(no.a<aa[i]){
				cot+=cal(no.a,aa[i]-1);
			}
			if(no.b>bb[i]){
				cot+=cal(bb[i]+1,no.b);
			}
			cot+=1;

			if(cot>=k){
				cur=cot;
				ans.pb(i);
				ss.erase(no);
				if(no.a<aa[i]){
					ss.insert({no.a,aa[i]-1});
				}
				if(no.b>bb[i]){
					ss.insert({bb[i]+1,no.b});
				}
			}
		}
		else{
			continue;
		}
	}

//	cout<<ans.size()<<endl;
	for(auto j:ans){
		cout<<j+1<<endl;
	}








 
	return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:140:16: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  140 |   if(ans.size()==k){
      |      ~~~~~~~~~~^~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9708 KB Output is correct
2 Correct 7 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 206 ms 40676 KB Output is correct
5 Correct 200 ms 40676 KB Output is correct
6 Correct 199 ms 40676 KB Output is correct
7 Correct 186 ms 40420 KB Output is correct
8 Correct 205 ms 40676 KB Output is correct
9 Correct 198 ms 40676 KB Output is correct
10 Correct 196 ms 40548 KB Output is correct
11 Correct 192 ms 40420 KB Output is correct
12 Correct 189 ms 41064 KB Output is correct
13 Correct 195 ms 40936 KB Output is correct
14 Correct 192 ms 40808 KB Output is correct
15 Correct 188 ms 40680 KB Output is correct
16 Correct 187 ms 39916 KB Output is correct
17 Correct 173 ms 39916 KB Output is correct
18 Correct 171 ms 39832 KB Output is correct
19 Correct 174 ms 39660 KB Output is correct
20 Correct 171 ms 39660 KB Output is correct
21 Correct 171 ms 39532 KB Output is correct
22 Correct 174 ms 39532 KB Output is correct
23 Correct 173 ms 39532 KB Output is correct
24 Correct 178 ms 39532 KB Output is correct
25 Correct 195 ms 39428 KB Output is correct
26 Correct 229 ms 39452 KB Output is correct
27 Correct 188 ms 39532 KB Output is correct
28 Correct 153 ms 39532 KB Output is correct
29 Correct 149 ms 39532 KB Output is correct
30 Correct 160 ms 39532 KB Output is correct
31 Correct 159 ms 39532 KB Output is correct
32 Correct 173 ms 39532 KB Output is correct
33 Correct 194 ms 39500 KB Output is correct
34 Correct 172 ms 40424 KB Output is correct
35 Correct 182 ms 40172 KB Output is correct
36 Correct 170 ms 39788 KB Output is correct
37 Correct 182 ms 40168 KB Output is correct
38 Correct 179 ms 40040 KB Output is correct
39 Correct 176 ms 40040 KB Output is correct
40 Correct 177 ms 40040 KB Output is correct
41 Correct 185 ms 40040 KB Output is correct
42 Correct 152 ms 39532 KB Output is correct
43 Correct 174 ms 40168 KB Output is correct
44 Correct 173 ms 40168 KB Output is correct
45 Correct 166 ms 40040 KB Output is correct
46 Correct 188 ms 40120 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9708 KB Output is correct
2 Correct 6 ms 9708 KB Output is correct
3 Correct 8 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 8 ms 9708 KB Output is correct
6 Correct 7 ms 9708 KB Output is correct
7 Correct 7 ms 9708 KB Output is correct
8 Correct 7 ms 9708 KB Output is correct
9 Correct 7 ms 9708 KB Output is correct
10 Correct 7 ms 9708 KB Output is correct
11 Correct 7 ms 9708 KB Output is correct
12 Correct 7 ms 9708 KB Output is correct
13 Correct 8 ms 9708 KB Output is correct
14 Correct 8 ms 9712 KB Output is correct
15 Correct 7 ms 9708 KB Output is correct
16 Correct 7 ms 9708 KB Output is correct
17 Correct 7 ms 9708 KB Output is correct
18 Correct 7 ms 9708 KB Output is correct
19 Correct 8 ms 9708 KB Output is correct
20 Correct 7 ms 9708 KB Output is correct
21 Correct 7 ms 9708 KB Output is correct
22 Correct 8 ms 9708 KB Output is correct
23 Correct 7 ms 9708 KB Output is correct
24 Correct 7 ms 9708 KB Output is correct
25 Correct 7 ms 9708 KB Output is correct
26 Correct 7 ms 9708 KB Output is correct
27 Correct 7 ms 9708 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9708 KB Output is correct
2 Correct 6 ms 9708 KB Output is correct
3 Correct 8 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 8 ms 9708 KB Output is correct
6 Correct 7 ms 9708 KB Output is correct
7 Correct 7 ms 9708 KB Output is correct
8 Correct 7 ms 9708 KB Output is correct
9 Correct 7 ms 9708 KB Output is correct
10 Correct 7 ms 9708 KB Output is correct
11 Correct 7 ms 9708 KB Output is correct
12 Correct 7 ms 9708 KB Output is correct
13 Correct 8 ms 9708 KB Output is correct
14 Correct 8 ms 9712 KB Output is correct
15 Correct 7 ms 9708 KB Output is correct
16 Correct 7 ms 9708 KB Output is correct
17 Correct 7 ms 9708 KB Output is correct
18 Correct 7 ms 9708 KB Output is correct
19 Correct 8 ms 9708 KB Output is correct
20 Correct 7 ms 9708 KB Output is correct
21 Correct 7 ms 9708 KB Output is correct
22 Correct 8 ms 9708 KB Output is correct
23 Correct 7 ms 9708 KB Output is correct
24 Correct 7 ms 9708 KB Output is correct
25 Correct 7 ms 9708 KB Output is correct
26 Correct 7 ms 9708 KB Output is correct
27 Correct 7 ms 9708 KB Output is correct
28 Correct 14 ms 10604 KB Output is correct
29 Correct 12 ms 10604 KB Output is correct
30 Correct 14 ms 10604 KB Output is correct
31 Correct 13 ms 10604 KB Output is correct
32 Correct 13 ms 10604 KB Output is correct
33 Correct 14 ms 10604 KB Output is correct
34 Correct 12 ms 10604 KB Output is correct
35 Correct 13 ms 10732 KB Output is correct
36 Correct 13 ms 10752 KB Output is correct
37 Correct 13 ms 10732 KB Output is correct
38 Correct 12 ms 10604 KB Output is correct
39 Correct 13 ms 10732 KB Output is correct
40 Correct 13 ms 10732 KB Output is correct
41 Correct 12 ms 10732 KB Output is correct
42 Correct 11 ms 10604 KB Output is correct
43 Correct 13 ms 10636 KB Output is correct
44 Correct 16 ms 10732 KB Output is correct
45 Correct 12 ms 10732 KB Output is correct
46 Correct 12 ms 10604 KB Output is correct
47 Correct 15 ms 10604 KB Output is correct
48 Correct 13 ms 10604 KB Output is correct
49 Correct 12 ms 10604 KB Output is correct
50 Correct 13 ms 10604 KB Output is correct
51 Correct 11 ms 10604 KB Output is correct
52 Correct 12 ms 10604 KB Output is correct
53 Correct 11 ms 10604 KB Output is correct
54 Correct 11 ms 10604 KB Output is correct
55 Correct 11 ms 10732 KB Output is correct
56 Correct 11 ms 10732 KB Output is correct
57 Correct 11 ms 10732 KB Output is correct
58 Correct 11 ms 10732 KB Output is correct
59 Correct 12 ms 10732 KB Output is correct
60 Correct 11 ms 10648 KB Output is correct
61 Correct 12 ms 10732 KB Output is correct
62 Correct 11 ms 10732 KB Output is correct
63 Correct 11 ms 10752 KB Output is correct
64 Correct 11 ms 10604 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9708 KB Output is correct
2 Correct 7 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 206 ms 40676 KB Output is correct
5 Correct 200 ms 40676 KB Output is correct
6 Correct 199 ms 40676 KB Output is correct
7 Correct 186 ms 40420 KB Output is correct
8 Correct 205 ms 40676 KB Output is correct
9 Correct 198 ms 40676 KB Output is correct
10 Correct 196 ms 40548 KB Output is correct
11 Correct 192 ms 40420 KB Output is correct
12 Correct 189 ms 41064 KB Output is correct
13 Correct 195 ms 40936 KB Output is correct
14 Correct 192 ms 40808 KB Output is correct
15 Correct 188 ms 40680 KB Output is correct
16 Correct 187 ms 39916 KB Output is correct
17 Correct 173 ms 39916 KB Output is correct
18 Correct 171 ms 39832 KB Output is correct
19 Correct 174 ms 39660 KB Output is correct
20 Correct 171 ms 39660 KB Output is correct
21 Correct 171 ms 39532 KB Output is correct
22 Correct 174 ms 39532 KB Output is correct
23 Correct 173 ms 39532 KB Output is correct
24 Correct 178 ms 39532 KB Output is correct
25 Correct 195 ms 39428 KB Output is correct
26 Correct 229 ms 39452 KB Output is correct
27 Correct 188 ms 39532 KB Output is correct
28 Correct 153 ms 39532 KB Output is correct
29 Correct 149 ms 39532 KB Output is correct
30 Correct 160 ms 39532 KB Output is correct
31 Correct 159 ms 39532 KB Output is correct
32 Correct 173 ms 39532 KB Output is correct
33 Correct 194 ms 39500 KB Output is correct
34 Correct 172 ms 40424 KB Output is correct
35 Correct 182 ms 40172 KB Output is correct
36 Correct 170 ms 39788 KB Output is correct
37 Correct 182 ms 40168 KB Output is correct
38 Correct 179 ms 40040 KB Output is correct
39 Correct 176 ms 40040 KB Output is correct
40 Correct 177 ms 40040 KB Output is correct
41 Correct 185 ms 40040 KB Output is correct
42 Correct 152 ms 39532 KB Output is correct
43 Correct 174 ms 40168 KB Output is correct
44 Correct 173 ms 40168 KB Output is correct
45 Correct 166 ms 40040 KB Output is correct
46 Correct 188 ms 40120 KB Output is correct
47 Correct 7 ms 9708 KB Output is correct
48 Correct 6 ms 9708 KB Output is correct
49 Correct 8 ms 9708 KB Output is correct
50 Correct 7 ms 9708 KB Output is correct
51 Correct 8 ms 9708 KB Output is correct
52 Correct 7 ms 9708 KB Output is correct
53 Correct 7 ms 9708 KB Output is correct
54 Correct 7 ms 9708 KB Output is correct
55 Correct 7 ms 9708 KB Output is correct
56 Correct 7 ms 9708 KB Output is correct
57 Correct 7 ms 9708 KB Output is correct
58 Correct 7 ms 9708 KB Output is correct
59 Correct 8 ms 9708 KB Output is correct
60 Correct 8 ms 9712 KB Output is correct
61 Correct 7 ms 9708 KB Output is correct
62 Correct 7 ms 9708 KB Output is correct
63 Correct 7 ms 9708 KB Output is correct
64 Correct 7 ms 9708 KB Output is correct
65 Correct 8 ms 9708 KB Output is correct
66 Correct 7 ms 9708 KB Output is correct
67 Correct 7 ms 9708 KB Output is correct
68 Correct 8 ms 9708 KB Output is correct
69 Correct 7 ms 9708 KB Output is correct
70 Correct 7 ms 9708 KB Output is correct
71 Correct 7 ms 9708 KB Output is correct
72 Correct 7 ms 9708 KB Output is correct
73 Correct 7 ms 9708 KB Output is correct
74 Correct 14 ms 10604 KB Output is correct
75 Correct 12 ms 10604 KB Output is correct
76 Correct 14 ms 10604 KB Output is correct
77 Correct 13 ms 10604 KB Output is correct
78 Correct 13 ms 10604 KB Output is correct
79 Correct 14 ms 10604 KB Output is correct
80 Correct 12 ms 10604 KB Output is correct
81 Correct 13 ms 10732 KB Output is correct
82 Correct 13 ms 10752 KB Output is correct
83 Correct 13 ms 10732 KB Output is correct
84 Correct 12 ms 10604 KB Output is correct
85 Correct 13 ms 10732 KB Output is correct
86 Correct 13 ms 10732 KB Output is correct
87 Correct 12 ms 10732 KB Output is correct
88 Correct 11 ms 10604 KB Output is correct
89 Correct 13 ms 10636 KB Output is correct
90 Correct 16 ms 10732 KB Output is correct
91 Correct 12 ms 10732 KB Output is correct
92 Correct 12 ms 10604 KB Output is correct
93 Correct 15 ms 10604 KB Output is correct
94 Correct 13 ms 10604 KB Output is correct
95 Correct 12 ms 10604 KB Output is correct
96 Correct 13 ms 10604 KB Output is correct
97 Correct 11 ms 10604 KB Output is correct
98 Correct 12 ms 10604 KB Output is correct
99 Correct 11 ms 10604 KB Output is correct
100 Correct 11 ms 10604 KB Output is correct
101 Correct 11 ms 10732 KB Output is correct
102 Correct 11 ms 10732 KB Output is correct
103 Correct 11 ms 10732 KB Output is correct
104 Correct 11 ms 10732 KB Output is correct
105 Correct 12 ms 10732 KB Output is correct
106 Correct 11 ms 10648 KB Output is correct
107 Correct 12 ms 10732 KB Output is correct
108 Correct 11 ms 10732 KB Output is correct
109 Correct 11 ms 10752 KB Output is correct
110 Correct 11 ms 10604 KB Output is correct
111 Correct 368 ms 39532 KB Output is correct
112 Correct 368 ms 39532 KB Output is correct
113 Correct 356 ms 39532 KB Output is correct
114 Correct 383 ms 39532 KB Output is correct
115 Correct 344 ms 39532 KB Output is correct
116 Correct 339 ms 39532 KB Output is correct
117 Correct 339 ms 39532 KB Output is correct
118 Correct 387 ms 41576 KB Output is correct
119 Correct 380 ms 41572 KB Output is correct
120 Correct 343 ms 41192 KB Output is correct
121 Correct 281 ms 39720 KB Output is correct
122 Correct 363 ms 41320 KB Output is correct
123 Correct 356 ms 41320 KB Output is correct
124 Correct 369 ms 41500 KB Output is correct
125 Correct 295 ms 39660 KB Output is correct
126 Correct 382 ms 40172 KB Output is correct
127 Correct 354 ms 40044 KB Output is correct
128 Correct 327 ms 40044 KB Output is correct
129 Correct 304 ms 39532 KB Output is correct
130 Correct 365 ms 39688 KB Output is correct
131 Correct 336 ms 39660 KB Output is correct
132 Correct 327 ms 39532 KB Output is correct
133 Correct 334 ms 39552 KB Output is correct
134 Correct 356 ms 39576 KB Output is correct
135 Correct 360 ms 39712 KB Output is correct
136 Correct 367 ms 39532 KB Output is correct
137 Correct 329 ms 39532 KB Output is correct
138 Correct 377 ms 39532 KB Output is correct
139 Correct 338 ms 39532 KB Output is correct
140 Correct 344 ms 39456 KB Output is correct
141 Correct 332 ms 39532 KB Output is correct
142 Correct 191 ms 40548 KB Output is correct
143 Correct 199 ms 40548 KB Output is correct
144 Correct 197 ms 40548 KB Output is correct
145 Correct 190 ms 40676 KB Output is correct
146 Correct 196 ms 40548 KB Output is correct
147 Correct 182 ms 40548 KB Output is correct
148 Correct 182 ms 40676 KB Output is correct
149 Correct 186 ms 40548 KB Output is correct
150 Correct 180 ms 40548 KB Output is correct
151 Correct 179 ms 40420 KB Output is correct
152 Correct 145 ms 39532 KB Output is correct
153 Correct 195 ms 40548 KB Output is correct
154 Correct 182 ms 40664 KB Output is correct
155 Correct 183 ms 40820 KB Output is correct
156 Correct 182 ms 40548 KB Output is correct
157 Correct 185 ms 40548 KB Output is correct
158 Correct 179 ms 40548 KB Output is correct
159 Correct 184 ms 40548 KB Output is correct
160 Correct 146 ms 39532 KB Output is correct
161 Correct 360 ms 41768 KB Output is correct
162 Correct 350 ms 41704 KB Output is correct
163 Correct 336 ms 41704 KB Output is correct
164 Correct 342 ms 41576 KB Output is correct
165 Correct 351 ms 41448 KB Output is correct
166 Correct 156 ms 39532 KB Output is correct
167 Correct 178 ms 40320 KB Output is correct
168 Correct 176 ms 40040 KB Output is correct
169 Correct 182 ms 40040 KB Output is correct
170 Correct 189 ms 40040 KB Output is correct
171 Correct 209 ms 42344 KB Output is correct
172 Correct 212 ms 42344 KB Output is correct
173 Correct 377 ms 40564 KB Output is correct
174 Correct 339 ms 40552 KB Output is correct
175 Correct 345 ms 40552 KB Output is correct
176 Correct 328 ms 40808 KB Output is correct