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답안 #415056

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
415056 2021-05-31T13:28:11 Z 송준혁(#7511) Event Hopping 2 (JOI21_event2) C++17
100 / 100
 358 ms 18528 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define lb lower_bound
#define MOD 1000000007
#define INF (1ll<<62)
using namespace std;
typedef long long LL;
typedef pair<int,int> pii;

int N, M, K;
int S[101010], E[101010];
int L[101010], R[101010];
int P[20][101010];
pii V[101010];
vector<int> ans;
vector<pii> st;
set<pii> I;

int f(pii t){
	int u = lower_bound(L+1, L+M+1, t.fi)-L;
	int x = lower_bound(R+1, R+M+1, t.se+1)-R-1;
	if (u > x) return 0;
	int ret=1;
	for (int i=18; i>=0; i--) if (P[i][u] <= x) ret += (1<<i), u = P[i][u];
	return ret;
}

int main(){
	scanf("%d %d", &N, &K);
	for (int i=1; i<=N; i++){
		scanf("%d %d", &S[i], &E[i]);
		V[i] = pii(S[i], E[i]);
	}
	sort(V+1, V+N+1, [&](pii a, pii b){
		if (a.fi != b.fi) return a.fi < b.fi;
		return a.se > b.se;
	});
	for (int i=1; i<=N; i++){
		while (st.size() && st.back().se > V[i].se) st.pop_back();
		st.pb(V[i]);
	}
	M = st.size();
	int t=1;
	for (int i=1; i<=M; i++){
		tie(L[i], R[i])=st[i-1];
		while (t < i && R[t] <= L[i]) P[0][t] = i, t++;
	}
	while (t<=M+1) P[0][t] = M+1, t++; 
	for (int i=1; i<=18; i++) for (int j=1; j<=M+1; j++) P[i][j] = P[i-1][P[i-1][j]];
	I.insert(pii(0, MOD));
	int cnt = f(pii(0, MOD));
	for (int i=1; i<=N && K; i++){
		auto it = I.lower_bound(pii(S[i]+1, 0));
		if (it == I.begin()) continue;
		--it;
		if (it->se < E[i]) continue;
		pii l = pii(it->fi, S[i]);
		pii r = pii(E[i], it->se);
		if (cnt+f(l)+f(r)-f(*it) >= K-1){
			ans.pb(i), K--;
			cnt += f(l)+f(r)-f(*it);
			I.erase(it);
			I.insert(l);
			I.insert(r);
		}
	}
	if (K) puts("-1");
	else for (int x : ans) printf("%d\n", x);
	return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:31:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |  scanf("%d %d", &N, &K);
      |  ~~~~~^~~~~~~~~~~~~~~~~
event2.cpp:33:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |   scanf("%d %d", &S[i], &E[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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 186 ms 16148 KB Output is correct
5 Correct 174 ms 15832 KB Output is correct
6 Correct 178 ms 15500 KB Output is correct
7 Correct 146 ms 14996 KB Output is correct
8 Correct 172 ms 16148 KB Output is correct
9 Correct 163 ms 15808 KB Output is correct
10 Correct 159 ms 15600 KB Output is correct
11 Correct 144 ms 15148 KB Output is correct
12 Correct 135 ms 13468 KB Output is correct
13 Correct 133 ms 13336 KB Output is correct
14 Correct 114 ms 13152 KB Output is correct
15 Correct 105 ms 12796 KB Output is correct
16 Correct 70 ms 7484 KB Output is correct
17 Correct 56 ms 7484 KB Output is correct
18 Correct 53 ms 7348 KB Output is correct
19 Correct 44 ms 3680 KB Output is correct
20 Correct 49 ms 3708 KB Output is correct
21 Correct 37 ms 3628 KB Output is correct
22 Correct 35 ms 2500 KB Output is correct
23 Correct 34 ms 2488 KB Output is correct
24 Correct 34 ms 2512 KB Output is correct
25 Correct 33 ms 2104 KB Output is correct
26 Correct 33 ms 2004 KB Output is correct
27 Correct 34 ms 2116 KB Output is correct
28 Correct 84 ms 10992 KB Output is correct
29 Correct 85 ms 10280 KB Output is correct
30 Correct 76 ms 6944 KB Output is correct
31 Correct 69 ms 3648 KB Output is correct
32 Correct 61 ms 2524 KB Output is correct
33 Correct 54 ms 2128 KB Output is correct
34 Correct 86 ms 12136 KB Output is correct
35 Correct 68 ms 11504 KB Output is correct
36 Correct 53 ms 10904 KB Output is correct
37 Correct 108 ms 9260 KB Output is correct
38 Correct 129 ms 9148 KB Output is correct
39 Correct 109 ms 9032 KB Output is correct
40 Correct 97 ms 8952 KB Output is correct
41 Correct 93 ms 8764 KB Output is correct
42 Correct 77 ms 6520 KB Output is correct
43 Correct 102 ms 9148 KB Output is correct
44 Correct 101 ms 9020 KB Output is correct
45 Correct 100 ms 8872 KB Output is correct
46 Correct 97 ms 8800 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 2 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 3 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 2 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 2 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 2 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 3 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 2 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 3 ms 460 KB Output is correct
30 Correct 3 ms 460 KB Output is correct
31 Correct 3 ms 460 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 4 ms 460 KB Output is correct
34 Correct 3 ms 460 KB Output is correct
35 Correct 9 ms 844 KB Output is correct
36 Correct 7 ms 844 KB Output is correct
37 Correct 6 ms 824 KB Output is correct
38 Correct 4 ms 716 KB Output is correct
39 Correct 7 ms 844 KB Output is correct
40 Correct 8 ms 876 KB Output is correct
41 Correct 7 ms 892 KB Output is correct
42 Correct 4 ms 692 KB Output is correct
43 Correct 5 ms 684 KB Output is correct
44 Correct 5 ms 716 KB Output is correct
45 Correct 4 ms 716 KB Output is correct
46 Correct 5 ms 716 KB Output is correct
47 Correct 3 ms 588 KB Output is correct
48 Correct 3 ms 588 KB Output is correct
49 Correct 3 ms 588 KB Output is correct
50 Correct 5 ms 568 KB Output is correct
51 Correct 3 ms 436 KB Output is correct
52 Correct 3 ms 460 KB Output is correct
53 Correct 2 ms 460 KB Output is correct
54 Correct 3 ms 460 KB Output is correct
55 Correct 6 ms 952 KB Output is correct
56 Correct 7 ms 836 KB Output is correct
57 Correct 7 ms 920 KB Output is correct
58 Correct 7 ms 916 KB Output is correct
59 Correct 6 ms 888 KB Output is correct
60 Correct 5 ms 872 KB Output is correct
61 Correct 6 ms 972 KB Output is correct
62 Correct 6 ms 820 KB Output is correct
63 Correct 7 ms 844 KB Output is correct
64 Correct 4 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 186 ms 16148 KB Output is correct
5 Correct 174 ms 15832 KB Output is correct
6 Correct 178 ms 15500 KB Output is correct
7 Correct 146 ms 14996 KB Output is correct
8 Correct 172 ms 16148 KB Output is correct
9 Correct 163 ms 15808 KB Output is correct
10 Correct 159 ms 15600 KB Output is correct
11 Correct 144 ms 15148 KB Output is correct
12 Correct 135 ms 13468 KB Output is correct
13 Correct 133 ms 13336 KB Output is correct
14 Correct 114 ms 13152 KB Output is correct
15 Correct 105 ms 12796 KB Output is correct
16 Correct 70 ms 7484 KB Output is correct
17 Correct 56 ms 7484 KB Output is correct
18 Correct 53 ms 7348 KB Output is correct
19 Correct 44 ms 3680 KB Output is correct
20 Correct 49 ms 3708 KB Output is correct
21 Correct 37 ms 3628 KB Output is correct
22 Correct 35 ms 2500 KB Output is correct
23 Correct 34 ms 2488 KB Output is correct
24 Correct 34 ms 2512 KB Output is correct
25 Correct 33 ms 2104 KB Output is correct
26 Correct 33 ms 2004 KB Output is correct
27 Correct 34 ms 2116 KB Output is correct
28 Correct 84 ms 10992 KB Output is correct
29 Correct 85 ms 10280 KB Output is correct
30 Correct 76 ms 6944 KB Output is correct
31 Correct 69 ms 3648 KB Output is correct
32 Correct 61 ms 2524 KB Output is correct
33 Correct 54 ms 2128 KB Output is correct
34 Correct 86 ms 12136 KB Output is correct
35 Correct 68 ms 11504 KB Output is correct
36 Correct 53 ms 10904 KB Output is correct
37 Correct 108 ms 9260 KB Output is correct
38 Correct 129 ms 9148 KB Output is correct
39 Correct 109 ms 9032 KB Output is correct
40 Correct 97 ms 8952 KB Output is correct
41 Correct 93 ms 8764 KB Output is correct
42 Correct 77 ms 6520 KB Output is correct
43 Correct 102 ms 9148 KB Output is correct
44 Correct 101 ms 9020 KB Output is correct
45 Correct 100 ms 8872 KB Output is correct
46 Correct 97 ms 8800 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 2 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 2 ms 332 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 2 ms 332 KB Output is correct
60 Correct 1 ms 304 KB Output is correct
61 Correct 1 ms 332 KB Output is correct
62 Correct 1 ms 332 KB Output is correct
63 Correct 2 ms 332 KB Output is correct
64 Correct 1 ms 304 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 3 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 2 ms 332 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 2 ms 332 KB Output is correct
72 Correct 1 ms 332 KB Output is correct
73 Correct 2 ms 332 KB Output is correct
74 Correct 2 ms 460 KB Output is correct
75 Correct 3 ms 460 KB Output is correct
76 Correct 3 ms 460 KB Output is correct
77 Correct 3 ms 460 KB Output is correct
78 Correct 2 ms 460 KB Output is correct
79 Correct 4 ms 460 KB Output is correct
80 Correct 3 ms 460 KB Output is correct
81 Correct 9 ms 844 KB Output is correct
82 Correct 7 ms 844 KB Output is correct
83 Correct 6 ms 824 KB Output is correct
84 Correct 4 ms 716 KB Output is correct
85 Correct 7 ms 844 KB Output is correct
86 Correct 8 ms 876 KB Output is correct
87 Correct 7 ms 892 KB Output is correct
88 Correct 4 ms 692 KB Output is correct
89 Correct 5 ms 684 KB Output is correct
90 Correct 5 ms 716 KB Output is correct
91 Correct 4 ms 716 KB Output is correct
92 Correct 5 ms 716 KB Output is correct
93 Correct 3 ms 588 KB Output is correct
94 Correct 3 ms 588 KB Output is correct
95 Correct 3 ms 588 KB Output is correct
96 Correct 5 ms 568 KB Output is correct
97 Correct 3 ms 436 KB Output is correct
98 Correct 3 ms 460 KB Output is correct
99 Correct 2 ms 460 KB Output is correct
100 Correct 3 ms 460 KB Output is correct
101 Correct 6 ms 952 KB Output is correct
102 Correct 7 ms 836 KB Output is correct
103 Correct 7 ms 920 KB Output is correct
104 Correct 7 ms 916 KB Output is correct
105 Correct 6 ms 888 KB Output is correct
106 Correct 5 ms 872 KB Output is correct
107 Correct 6 ms 972 KB Output is correct
108 Correct 6 ms 820 KB Output is correct
109 Correct 7 ms 844 KB Output is correct
110 Correct 4 ms 716 KB Output is correct
111 Correct 61 ms 3900 KB Output is correct
112 Correct 51 ms 3944 KB Output is correct
113 Correct 45 ms 3904 KB Output is correct
114 Correct 45 ms 3916 KB Output is correct
115 Correct 41 ms 3884 KB Output is correct
116 Correct 81 ms 3904 KB Output is correct
117 Correct 76 ms 3908 KB Output is correct
118 Correct 358 ms 18104 KB Output is correct
119 Correct 302 ms 17460 KB Output is correct
120 Correct 198 ms 14688 KB Output is correct
121 Correct 161 ms 12236 KB Output is correct
122 Correct 203 ms 15328 KB Output is correct
123 Correct 207 ms 15112 KB Output is correct
124 Correct 179 ms 14668 KB Output is correct
125 Correct 167 ms 12212 KB Output is correct
126 Correct 101 ms 9484 KB Output is correct
127 Correct 99 ms 9376 KB Output is correct
128 Correct 95 ms 9380 KB Output is correct
129 Correct 131 ms 8896 KB Output is correct
130 Correct 64 ms 5568 KB Output is correct
131 Correct 70 ms 5568 KB Output is correct
132 Correct 68 ms 5568 KB Output is correct
133 Correct 108 ms 5548 KB Output is correct
134 Correct 52 ms 4372 KB Output is correct
135 Correct 51 ms 4452 KB Output is correct
136 Correct 46 ms 4420 KB Output is correct
137 Correct 89 ms 4416 KB Output is correct
138 Correct 42 ms 4012 KB Output is correct
139 Correct 45 ms 4048 KB Output is correct
140 Correct 41 ms 4036 KB Output is correct
141 Correct 82 ms 4056 KB Output is correct
142 Correct 183 ms 18472 KB Output is correct
143 Correct 180 ms 18456 KB Output is correct
144 Correct 181 ms 18528 KB Output is correct
145 Correct 179 ms 18412 KB Output is correct
146 Correct 221 ms 18356 KB Output is correct
147 Correct 168 ms 18204 KB Output is correct
148 Correct 166 ms 18052 KB Output is correct
149 Correct 199 ms 18024 KB Output is correct
150 Correct 162 ms 17856 KB Output is correct
151 Correct 159 ms 17320 KB Output is correct
152 Correct 86 ms 12888 KB Output is correct
153 Correct 176 ms 18488 KB Output is correct
154 Correct 184 ms 18372 KB Output is correct
155 Correct 175 ms 18228 KB Output is correct
156 Correct 169 ms 18136 KB Output is correct
157 Correct 206 ms 18100 KB Output is correct
158 Correct 197 ms 17936 KB Output is correct
159 Correct 155 ms 17332 KB Output is correct
160 Correct 95 ms 12992 KB Output is correct
161 Correct 228 ms 15660 KB Output is correct
162 Correct 229 ms 15552 KB Output is correct
163 Correct 208 ms 15388 KB Output is correct
164 Correct 176 ms 15272 KB Output is correct
165 Correct 171 ms 15260 KB Output is correct
166 Correct 87 ms 8476 KB Output is correct
167 Correct 123 ms 11012 KB Output is correct
168 Correct 115 ms 10968 KB Output is correct
169 Correct 107 ms 10840 KB Output is correct
170 Correct 96 ms 10744 KB Output is correct
171 Correct 109 ms 14968 KB Output is correct
172 Correct 113 ms 15672 KB Output is correct
173 Correct 271 ms 15904 KB Output is correct
174 Correct 245 ms 15672 KB Output is correct
175 Correct 243 ms 15552 KB Output is correct
176 Correct 185 ms 15132 KB Output is correct