oj.uz

답안 #393031

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
393031 2021-04-22T14:57:26 Z oolimry Event Hopping 2 (JOI21_event2) C++17
100 / 100
 200 ms 18468 KB 
#include <bits/stdc++.h>
using namespace std;
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int) x.size())
#define show(x) cerr << #x << " is " << x << endl;
#define show2(x, y) cerr << #x << " is " << x << ", " << #y << " is " << y << endl;
typedef long long lint;
typedef pair<lint, lint> ii;

const lint inf = 0x3f3f3f3f;
struct range{ int l, r, id; };
vector<range> ranges;

int p[19][100005];
int order[100005];

set<ii> taken;

lint solve(lint s, lint limit){
	if(ranges[s].r > limit) return 0;
	lint res = 0;
	for(int k = 18;k >= 0;k--){
		int ns = p[k][s];
		if(ranges[ns].r <= limit){
			res += (1<<k);
			s = ns;
		}
	}
	return res+1;
}

int main(){
	//freopen("i.txt","r",stdin);
	ios_base::sync_with_stdio(false); cin.tie(0);
	
	int n, K; cin >> n >> K;
	for(int i = 1;i <= n;i++){
		int l, r; cin >> l >> r;
		ranges.push_back({l,r,i});
	}
	
	ranges.push_back({inf+10, inf+10, n});
	sort(all(ranges), [&](range a, range b){ return a.r < b.r; });
	for(int i = 0;i <= 18;i++) fill(p[i], p[i]+n+5, n);
	
	set<ii> S;
	
	for(int i = 0;i < n;i++){
		range R = ranges[i];
		while(!S.empty()){
			auto it = S.begin();
			if(it->first <= R.l){
				p[0][it->second] = i;
				S.erase(it);
			}
			else break;
		}
		S.insert({R.r,i});
		order[R.id] = i;
	}
	
	for(int k = 1;k <= 18;k++){
		for(int i = 0;i < n;i++) p[k][i] = p[k-1][p[k-1][i]];
	}
	
	vector<int> ans;
	int cnt = solve(0, inf-2);
	
	if(cnt < K){
		cout << -1; return 0;
	}
	
	taken.insert({inf,inf});
	
	for(int x = 1;x <= n;x++){
		int i = order[x];
		range R = ranges[i];
		
		auto nxt = taken.lower_bound({R.r, -1});
		int s = 0;
		if(nxt != taken.begin()){
			auto pre = prev(nxt);
			int pid = pre->second;
			if(ranges[pid].r > R.l) continue;
			
			s = p[0][pid];
		}
		else s = 0;

		int newcnt = cnt;
		newcnt += solve(s, R.l);
		newcnt += solve(i, nxt->first);
		newcnt -= solve(s, nxt->first);
		
		if(newcnt >= K){
			ans.push_back(R.id);
			taken.insert({R.l, i});
			cnt = newcnt;
		}
	}
	
	for(int i = 0;i < K;i++) cout << ans[i] << "\n";
}

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 96 ms 15968 KB Output is correct
5 Correct 93 ms 16016 KB Output is correct
6 Correct 95 ms 15944 KB Output is correct
7 Correct 93 ms 15972 KB Output is correct
8 Correct 121 ms 15988 KB Output is correct
9 Correct 94 ms 15924 KB Output is correct
10 Correct 94 ms 15992 KB Output is correct
11 Correct 94 ms 15988 KB Output is correct
12 Correct 112 ms 13372 KB Output is correct
13 Correct 78 ms 13432 KB Output is correct
14 Correct 76 ms 13364 KB Output is correct
15 Correct 79 ms 13364 KB Output is correct
16 Correct 57 ms 10188 KB Output is correct
17 Correct 53 ms 10112 KB Output is correct
18 Correct 54 ms 10164 KB Output is correct
19 Correct 48 ms 9332 KB Output is correct
20 Correct 49 ms 9436 KB Output is correct
21 Correct 48 ms 11316 KB Output is correct
22 Correct 49 ms 11288 KB Output is correct
23 Correct 64 ms 11340 KB Output is correct
24 Correct 64 ms 11260 KB Output is correct
25 Correct 54 ms 11756 KB Output is correct
26 Correct 54 ms 11736 KB Output is correct
27 Correct 53 ms 11772 KB Output is correct
28 Correct 37 ms 11336 KB Output is correct
29 Correct 39 ms 11320 KB Output is correct
30 Correct 42 ms 11420 KB Output is correct
31 Correct 52 ms 11272 KB Output is correct
32 Correct 48 ms 11368 KB Output is correct
33 Correct 51 ms 11704 KB Output is correct
34 Correct 84 ms 15256 KB Output is correct
35 Correct 93 ms 15156 KB Output is correct
36 Correct 72 ms 15032 KB Output is correct
37 Correct 76 ms 14772 KB Output is correct
38 Correct 92 ms 14776 KB Output is correct
39 Correct 72 ms 14860 KB Output is correct
40 Correct 78 ms 14844 KB Output is correct
41 Correct 72 ms 14780 KB Output is correct
42 Correct 52 ms 11268 KB Output is correct
43 Correct 76 ms 14644 KB Output is correct
44 Correct 78 ms 14516 KB Output is correct
45 Correct 90 ms 14392 KB Output is correct
46 Correct 75 ms 14200 KB Output is correct

Subtask #2
1.0 / 1.0

# 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 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 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 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 336 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 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 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 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 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 2 ms 672 KB Output is correct
29 Correct 2 ms 716 KB Output is correct
30 Correct 2 ms 716 KB Output is correct
31 Correct 2 ms 720 KB Output is correct
32 Correct 2 ms 716 KB Output is correct
33 Correct 2 ms 720 KB Output is correct
34 Correct 2 ms 716 KB Output is correct
35 Correct 4 ms 844 KB Output is correct
36 Correct 4 ms 844 KB Output is correct
37 Correct 4 ms 848 KB Output is correct
38 Correct 2 ms 716 KB Output is correct
39 Correct 5 ms 844 KB Output is correct
40 Correct 4 ms 844 KB Output is correct
41 Correct 3 ms 844 KB Output is correct
42 Correct 2 ms 716 KB Output is correct
43 Correct 3 ms 716 KB Output is correct
44 Correct 3 ms 716 KB Output is correct
45 Correct 3 ms 716 KB Output is correct
46 Correct 2 ms 720 KB Output is correct
47 Correct 2 ms 716 KB Output is correct
48 Correct 2 ms 716 KB Output is correct
49 Correct 2 ms 660 KB Output is correct
50 Correct 3 ms 732 KB Output is correct
51 Correct 2 ms 716 KB Output is correct
52 Correct 2 ms 728 KB Output is correct
53 Correct 2 ms 716 KB Output is correct
54 Correct 2 ms 716 KB Output is correct
55 Correct 4 ms 844 KB Output is correct
56 Correct 3 ms 844 KB Output is correct
57 Correct 3 ms 844 KB Output is correct
58 Correct 4 ms 844 KB Output is correct
59 Correct 3 ms 844 KB Output is correct
60 Correct 3 ms 844 KB Output is correct
61 Correct 3 ms 844 KB Output is correct
62 Correct 3 ms 844 KB Output is correct
63 Correct 3 ms 844 KB Output is correct
64 Correct 2 ms 716 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 96 ms 15968 KB Output is correct
5 Correct 93 ms 16016 KB Output is correct
6 Correct 95 ms 15944 KB Output is correct
7 Correct 93 ms 15972 KB Output is correct
8 Correct 121 ms 15988 KB Output is correct
9 Correct 94 ms 15924 KB Output is correct
10 Correct 94 ms 15992 KB Output is correct
11 Correct 94 ms 15988 KB Output is correct
12 Correct 112 ms 13372 KB Output is correct
13 Correct 78 ms 13432 KB Output is correct
14 Correct 76 ms 13364 KB Output is correct
15 Correct 79 ms 13364 KB Output is correct
16 Correct 57 ms 10188 KB Output is correct
17 Correct 53 ms 10112 KB Output is correct
18 Correct 54 ms 10164 KB Output is correct
19 Correct 48 ms 9332 KB Output is correct
20 Correct 49 ms 9436 KB Output is correct
21 Correct 48 ms 11316 KB Output is correct
22 Correct 49 ms 11288 KB Output is correct
23 Correct 64 ms 11340 KB Output is correct
24 Correct 64 ms 11260 KB Output is correct
25 Correct 54 ms 11756 KB Output is correct
26 Correct 54 ms 11736 KB Output is correct
27 Correct 53 ms 11772 KB Output is correct
28 Correct 37 ms 11336 KB Output is correct
29 Correct 39 ms 11320 KB Output is correct
30 Correct 42 ms 11420 KB Output is correct
31 Correct 52 ms 11272 KB Output is correct
32 Correct 48 ms 11368 KB Output is correct
33 Correct 51 ms 11704 KB Output is correct
34 Correct 84 ms 15256 KB Output is correct
35 Correct 93 ms 15156 KB Output is correct
36 Correct 72 ms 15032 KB Output is correct
37 Correct 76 ms 14772 KB Output is correct
38 Correct 92 ms 14776 KB Output is correct
39 Correct 72 ms 14860 KB Output is correct
40 Correct 78 ms 14844 KB Output is correct
41 Correct 72 ms 14780 KB Output is correct
42 Correct 52 ms 11268 KB Output is correct
43 Correct 76 ms 14644 KB Output is correct
44 Correct 78 ms 14516 KB Output is correct
45 Correct 90 ms 14392 KB Output is correct
46 Correct 75 ms 14200 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 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 1 ms 332 KB Output is correct
57 Correct 1 ms 332 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 1 ms 332 KB Output is correct
62 Correct 1 ms 332 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 1 ms 332 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 1 ms 332 KB Output is correct
67 Correct 1 ms 332 KB Output is correct
68 Correct 1 ms 332 KB Output is correct
69 Correct 1 ms 332 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 1 ms 332 KB Output is correct
72 Correct 1 ms 336 KB Output is correct
73 Correct 1 ms 332 KB Output is correct
74 Correct 2 ms 672 KB Output is correct
75 Correct 2 ms 716 KB Output is correct
76 Correct 2 ms 716 KB Output is correct
77 Correct 2 ms 720 KB Output is correct
78 Correct 2 ms 716 KB Output is correct
79 Correct 2 ms 720 KB Output is correct
80 Correct 2 ms 716 KB Output is correct
81 Correct 4 ms 844 KB Output is correct
82 Correct 4 ms 844 KB Output is correct
83 Correct 4 ms 848 KB Output is correct
84 Correct 2 ms 716 KB Output is correct
85 Correct 5 ms 844 KB Output is correct
86 Correct 4 ms 844 KB Output is correct
87 Correct 3 ms 844 KB Output is correct
88 Correct 2 ms 716 KB Output is correct
89 Correct 3 ms 716 KB Output is correct
90 Correct 3 ms 716 KB Output is correct
91 Correct 3 ms 716 KB Output is correct
92 Correct 2 ms 720 KB Output is correct
93 Correct 2 ms 716 KB Output is correct
94 Correct 2 ms 716 KB Output is correct
95 Correct 2 ms 660 KB Output is correct
96 Correct 3 ms 732 KB Output is correct
97 Correct 2 ms 716 KB Output is correct
98 Correct 2 ms 728 KB Output is correct
99 Correct 2 ms 716 KB Output is correct
100 Correct 2 ms 716 KB Output is correct
101 Correct 4 ms 844 KB Output is correct
102 Correct 3 ms 844 KB Output is correct
103 Correct 3 ms 844 KB Output is correct
104 Correct 4 ms 844 KB Output is correct
105 Correct 3 ms 844 KB Output is correct
106 Correct 3 ms 844 KB Output is correct
107 Correct 3 ms 844 KB Output is correct
108 Correct 3 ms 844 KB Output is correct
109 Correct 3 ms 844 KB Output is correct
110 Correct 2 ms 716 KB Output is correct
111 Correct 59 ms 11284 KB Output is correct
112 Correct 58 ms 11244 KB Output is correct
113 Correct 58 ms 11300 KB Output is correct
114 Correct 57 ms 11408 KB Output is correct
115 Correct 56 ms 11364 KB Output is correct
116 Correct 50 ms 11352 KB Output is correct
117 Correct 53 ms 11344 KB Output is correct
118 Correct 200 ms 17992 KB Output is correct
119 Correct 188 ms 18008 KB Output is correct
120 Correct 166 ms 15208 KB Output is correct
121 Correct 44 ms 11368 KB Output is correct
122 Correct 141 ms 15336 KB Output is correct
123 Correct 132 ms 15208 KB Output is correct
124 Correct 162 ms 15220 KB Output is correct
125 Correct 44 ms 11364 KB Output is correct
126 Correct 91 ms 12148 KB Output is correct
127 Correct 85 ms 12084 KB Output is correct
128 Correct 80 ms 11960 KB Output is correct
129 Correct 48 ms 11348 KB Output is correct
130 Correct 73 ms 11444 KB Output is correct
131 Correct 67 ms 11380 KB Output is correct
132 Correct 65 ms 11316 KB Output is correct
133 Correct 61 ms 11320 KB Output is correct
134 Correct 66 ms 11360 KB Output is correct
135 Correct 60 ms 11320 KB Output is correct
136 Correct 61 ms 11256 KB Output is correct
137 Correct 56 ms 11304 KB Output is correct
138 Correct 79 ms 11612 KB Output is correct
139 Correct 59 ms 11572 KB Output is correct
140 Correct 59 ms 11548 KB Output is correct
141 Correct 53 ms 11540 KB Output is correct
142 Correct 99 ms 18468 KB Output is correct
143 Correct 101 ms 18424 KB Output is correct
144 Correct 101 ms 18380 KB Output is correct
145 Correct 87 ms 18356 KB Output is correct
146 Correct 97 ms 18316 KB Output is correct
147 Correct 88 ms 18408 KB Output is correct
148 Correct 86 ms 18344 KB Output is correct
149 Correct 88 ms 18404 KB Output is correct
150 Correct 89 ms 18296 KB Output is correct
151 Correct 85 ms 18240 KB Output is correct
152 Correct 36 ms 11320 KB Output is correct
153 Correct 90 ms 18448 KB Output is correct
154 Correct 89 ms 18412 KB Output is correct
155 Correct 89 ms 18444 KB Output is correct
156 Correct 88 ms 18340 KB Output is correct
157 Correct 88 ms 18352 KB Output is correct
158 Correct 91 ms 18400 KB Output is correct
159 Correct 87 ms 18280 KB Output is correct
160 Correct 36 ms 11248 KB Output is correct
161 Correct 143 ms 14872 KB Output is correct
162 Correct 127 ms 14776 KB Output is correct
163 Correct 157 ms 14776 KB Output is correct
164 Correct 132 ms 14836 KB Output is correct
165 Correct 131 ms 14704 KB Output is correct
166 Correct 51 ms 11268 KB Output is correct
167 Correct 77 ms 14776 KB Output is correct
168 Correct 75 ms 14520 KB Output is correct
169 Correct 74 ms 14424 KB Output is correct
170 Correct 73 ms 14268 KB Output is correct
171 Correct 68 ms 14128 KB Output is correct
172 Correct 78 ms 14868 KB Output is correct
173 Correct 136 ms 14832 KB Output is correct
174 Correct 141 ms 14868 KB Output is correct
175 Correct 148 ms 14708 KB Output is correct
176 Correct 116 ms 14444 KB Output is correct