oj.uz

답안 #527298

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
527298 2022-02-17T05:36:49 Z fhvirus Event Hopping 2 (JOI21_event2) C++17
100 / 100
 172 ms 24280 KB 
// Knapsack DP is harder than FFT.
#include<bits/stdc++.h>
using namespace std;
typedef long long ll; typedef pair<int,int> pii;
#define ff first
#define ss second
#define pb emplace_back
#define AI(x) begin(x),end(x)
#ifdef OWO
#define debug(args...) SDF(#args, args)
#define OIU(args...) ostream& operator<<(ostream&O,args)
#define LKJ(S,B,E,F) template<class...T>OIU(S<T...>s){O<<B;int c=0;for(auto i:s)O<<(c++?", ":"")<<F;return O<<E;}
LKJ(vector,'[',']',i)LKJ(deque,'[',']',i)LKJ(set,'{','}',i)LKJ(multiset,'{','}',i)LKJ(unordered_set,'{','}',i)LKJ(map,'{','}',i.ff<<':'<<i.ss)LKJ(unordered_map,'{','}',i.ff<<':'<<i.ss)
template<class...T>void SDF(const char* s,T...a){int c=sizeof...(T);if(!c){cerr<<"\033[1;32mvoid\033[0m\n";return;}(cerr<<"\033[1;32m("<<s<<") = (",...,(cerr<<a<<(--c?", ":")\033[0m\n")));}
template<class T,size_t N>OIU(array<T,N>a){return O<<vector<T>(AI(a));}template<class...T>OIU(pair<T...>p){return O<<'('<<p.ff<<','<<p.ss<<')';}template<class...T>OIU(tuple<T...>t){return O<<'(',apply([&O](T...s){int c=0;(...,(O<<(c++?", ":"")<<s));},t),O<<')';}
#else
#define debug(...) ((void)0)
#endif

struct Lisan: vector<int> {
	void done() { sort(AI()); erase(unique(AI()), end()); }
	int operator () (int v) { return lower_bound(AI(), v) - begin(); }
};


signed main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

	int N, K; cin >> N >> K;
	vector<int> L(N + 2), R(N + 2);
	for (int i = 1; i <= N; ++i)
		cin >> L[i] >> R[i];

	L[0] = -2; R[0] = -1;
	L[N + 1] = 1'000'000'007;
	R[N + 1] = L[N + 1] + 1;

	Lisan lisan;
	for (int i = 0; i <= N + 1; ++i) {
		lisan.pb(L[i]);
		lisan.pb(R[i]);
	}
	lisan.done();
	for (int i = 0; i <= N + 1; ++i) {
		L[i] = lisan(L[i]);
		R[i] = lisan(R[i]);
	}


	vector<vector<int>> in(lisan.size());
	for (int i = 0; i <= N + 1; ++i)
		in[L[i]].pb(i);

	vector<int> go(lisan.size());
	int mnr = 1'000'000'009, mni = -1;
	for (int i = lisan.size() - 1; i >= 0; --i) {
		for (int j: in[i])
			if (R[j] < mnr) {
				mnr = R[j];
				mni = j;
			}
		go[i] = mni;
	}

	int lg = __lg(N);
	vector<vector<int>> jmp(lg + 1, vector<int>(N + 2, -1));
	for (int i = 0; i <= N; ++i)
		jmp[0][i] = go[R[i]];
	jmp[0][N + 1] = N + 1;
	for (int l = 1; l <= lg; ++l) {
		for (int i = 0; i <= N + 1; ++i)
			jmp[l][i] = jmp[l - 1][jmp[l - 1][i]];
	}

	auto solve = [&](int l, int r) {
		int ans = 0;
		for (int d = lg; d >= 0; --d)
			if (R[jmp[d][l]] <= L[r]) {
				ans += (1 << d);
				l = jmp[d][l];
			}
		return ans;
	};

	int tot = solve(0, N + 1);
	if (tot < K) {
		cout << -1 << '\n';
		return 0;
	}

	auto cmp = [&](const int &a, const int &b) { return L[a] < L[b]; };
	set<int, decltype(cmp)> segs(cmp);
	segs.insert(0);
	segs.insert(N + 1);

	vector<int> use;
	for (int i = 1; i <= N; ++i) {
		auto it = segs.lower_bound(i);
		if (R[*prev(it)] > L[i] or R[i] > L[*it]) continue;
		int cur = solve(*prev(it), *it);
		int curl = solve(*prev(it), i);
		int curr = solve(i, *it);
		if (tot - cur + curl + curr + 1 >= K) {
			tot = tot - cur + curl + curr + 1;
			use.pb(i);
			segs.insert(i);
		}
	}

	while (use.size() > K) use.pop_back();
	for (int &i: use)
		cout << i << '\n';

	return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:110:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  110 |  while (use.size() > K) use.pop_back();
      |         ~~~~~~~~~~~^~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 308 KB Output is correct
2 Correct 0 ms 308 KB Output is correct
3 Correct 0 ms 312 KB Output is correct
4 Correct 118 ms 24252 KB Output is correct
5 Correct 111 ms 24236 KB Output is correct
6 Correct 109 ms 24256 KB Output is correct
7 Correct 108 ms 24176 KB Output is correct
8 Correct 112 ms 24240 KB Output is correct
9 Correct 107 ms 24280 KB Output is correct
10 Correct 113 ms 24208 KB Output is correct
11 Correct 110 ms 24244 KB Output is correct
12 Correct 87 ms 22336 KB Output is correct
13 Correct 91 ms 22324 KB Output is correct
14 Correct 94 ms 22288 KB Output is correct
15 Correct 90 ms 22180 KB Output is correct
16 Correct 65 ms 19776 KB Output is correct
17 Correct 66 ms 19752 KB Output is correct
18 Correct 59 ms 19648 KB Output is correct
19 Correct 60 ms 19372 KB Output is correct
20 Correct 56 ms 19380 KB Output is correct
21 Correct 56 ms 19376 KB Output is correct
22 Correct 57 ms 19376 KB Output is correct
23 Correct 56 ms 19368 KB Output is correct
24 Correct 58 ms 19428 KB Output is correct
25 Correct 71 ms 19392 KB Output is correct
26 Correct 62 ms 19500 KB Output is correct
27 Correct 60 ms 19412 KB Output is correct
28 Correct 53 ms 19432 KB Output is correct
29 Correct 46 ms 19388 KB Output is correct
30 Correct 50 ms 19368 KB Output is correct
31 Correct 55 ms 19452 KB Output is correct
32 Correct 66 ms 19380 KB Output is correct
33 Correct 63 ms 19440 KB Output is correct
34 Correct 87 ms 22196 KB Output is correct
35 Correct 86 ms 22064 KB Output is correct
36 Correct 86 ms 21936 KB Output is correct
37 Correct 88 ms 21832 KB Output is correct
38 Correct 96 ms 21928 KB Output is correct
39 Correct 82 ms 21928 KB Output is correct
40 Correct 84 ms 21868 KB Output is correct
41 Correct 80 ms 21812 KB Output is correct
42 Correct 59 ms 19372 KB Output is correct
43 Correct 94 ms 21812 KB Output is correct
44 Correct 89 ms 21696 KB Output is correct
45 Correct 85 ms 21552 KB Output is correct
46 Correct 87 ms 21444 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 0 ms 308 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 312 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 308 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 0 ms 308 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 0 ms 204 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 0 ms 308 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 312 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 308 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 0 ms 308 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 0 ms 204 KB Output is correct
28 Correct 2 ms 844 KB Output is correct
29 Correct 2 ms 836 KB Output is correct
30 Correct 2 ms 832 KB Output is correct
31 Correct 3 ms 844 KB Output is correct
32 Correct 2 ms 832 KB Output is correct
33 Correct 2 ms 844 KB Output is correct
34 Correct 2 ms 780 KB Output is correct
35 Correct 4 ms 920 KB Output is correct
36 Correct 4 ms 972 KB Output is correct
37 Correct 3 ms 956 KB Output is correct
38 Correct 2 ms 776 KB Output is correct
39 Correct 4 ms 960 KB Output is correct
40 Correct 3 ms 960 KB Output is correct
41 Correct 4 ms 956 KB Output is correct
42 Correct 2 ms 844 KB Output is correct
43 Correct 3 ms 844 KB Output is correct
44 Correct 3 ms 844 KB Output is correct
45 Correct 5 ms 844 KB Output is correct
46 Correct 2 ms 844 KB Output is correct
47 Correct 3 ms 780 KB Output is correct
48 Correct 3 ms 844 KB Output is correct
49 Correct 3 ms 836 KB Output is correct
50 Correct 2 ms 844 KB Output is correct
51 Correct 3 ms 832 KB Output is correct
52 Correct 2 ms 844 KB Output is correct
53 Correct 2 ms 840 KB Output is correct
54 Correct 2 ms 780 KB Output is correct
55 Correct 3 ms 844 KB Output is correct
56 Correct 3 ms 836 KB Output is correct
57 Correct 3 ms 844 KB Output is correct
58 Correct 3 ms 844 KB Output is correct
59 Correct 3 ms 844 KB Output is correct
60 Correct 3 ms 904 KB Output is correct
61 Correct 3 ms 844 KB Output is correct
62 Correct 3 ms 876 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 0 ms 308 KB Output is correct
2 Correct 0 ms 308 KB Output is correct
3 Correct 0 ms 312 KB Output is correct
4 Correct 118 ms 24252 KB Output is correct
5 Correct 111 ms 24236 KB Output is correct
6 Correct 109 ms 24256 KB Output is correct
7 Correct 108 ms 24176 KB Output is correct
8 Correct 112 ms 24240 KB Output is correct
9 Correct 107 ms 24280 KB Output is correct
10 Correct 113 ms 24208 KB Output is correct
11 Correct 110 ms 24244 KB Output is correct
12 Correct 87 ms 22336 KB Output is correct
13 Correct 91 ms 22324 KB Output is correct
14 Correct 94 ms 22288 KB Output is correct
15 Correct 90 ms 22180 KB Output is correct
16 Correct 65 ms 19776 KB Output is correct
17 Correct 66 ms 19752 KB Output is correct
18 Correct 59 ms 19648 KB Output is correct
19 Correct 60 ms 19372 KB Output is correct
20 Correct 56 ms 19380 KB Output is correct
21 Correct 56 ms 19376 KB Output is correct
22 Correct 57 ms 19376 KB Output is correct
23 Correct 56 ms 19368 KB Output is correct
24 Correct 58 ms 19428 KB Output is correct
25 Correct 71 ms 19392 KB Output is correct
26 Correct 62 ms 19500 KB Output is correct
27 Correct 60 ms 19412 KB Output is correct
28 Correct 53 ms 19432 KB Output is correct
29 Correct 46 ms 19388 KB Output is correct
30 Correct 50 ms 19368 KB Output is correct
31 Correct 55 ms 19452 KB Output is correct
32 Correct 66 ms 19380 KB Output is correct
33 Correct 63 ms 19440 KB Output is correct
34 Correct 87 ms 22196 KB Output is correct
35 Correct 86 ms 22064 KB Output is correct
36 Correct 86 ms 21936 KB Output is correct
37 Correct 88 ms 21832 KB Output is correct
38 Correct 96 ms 21928 KB Output is correct
39 Correct 82 ms 21928 KB Output is correct
40 Correct 84 ms 21868 KB Output is correct
41 Correct 80 ms 21812 KB Output is correct
42 Correct 59 ms 19372 KB Output is correct
43 Correct 94 ms 21812 KB Output is correct
44 Correct 89 ms 21696 KB Output is correct
45 Correct 85 ms 21552 KB Output is correct
46 Correct 87 ms 21444 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 1 ms 320 KB Output is correct
53 Correct 0 ms 204 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 1 ms 204 KB Output is correct
56 Correct 0 ms 204 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 0 ms 308 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 1 ms 312 KB Output is correct
61 Correct 1 ms 204 KB Output is correct
62 Correct 0 ms 204 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 1 ms 308 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 1 ms 204 KB Output is correct
67 Correct 1 ms 204 KB Output is correct
68 Correct 1 ms 204 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 0 ms 204 KB Output is correct
71 Correct 0 ms 308 KB Output is correct
72 Correct 1 ms 204 KB Output is correct
73 Correct 0 ms 204 KB Output is correct
74 Correct 2 ms 844 KB Output is correct
75 Correct 2 ms 836 KB Output is correct
76 Correct 2 ms 832 KB Output is correct
77 Correct 3 ms 844 KB Output is correct
78 Correct 2 ms 832 KB Output is correct
79 Correct 2 ms 844 KB Output is correct
80 Correct 2 ms 780 KB Output is correct
81 Correct 4 ms 920 KB Output is correct
82 Correct 4 ms 972 KB Output is correct
83 Correct 3 ms 956 KB Output is correct
84 Correct 2 ms 776 KB Output is correct
85 Correct 4 ms 960 KB Output is correct
86 Correct 3 ms 960 KB Output is correct
87 Correct 4 ms 956 KB Output is correct
88 Correct 2 ms 844 KB Output is correct
89 Correct 3 ms 844 KB Output is correct
90 Correct 3 ms 844 KB Output is correct
91 Correct 5 ms 844 KB Output is correct
92 Correct 2 ms 844 KB Output is correct
93 Correct 3 ms 780 KB Output is correct
94 Correct 3 ms 844 KB Output is correct
95 Correct 3 ms 836 KB Output is correct
96 Correct 2 ms 844 KB Output is correct
97 Correct 3 ms 832 KB Output is correct
98 Correct 2 ms 844 KB Output is correct
99 Correct 2 ms 840 KB Output is correct
100 Correct 2 ms 780 KB Output is correct
101 Correct 3 ms 844 KB Output is correct
102 Correct 3 ms 836 KB Output is correct
103 Correct 3 ms 844 KB Output is correct
104 Correct 3 ms 844 KB Output is correct
105 Correct 3 ms 844 KB Output is correct
106 Correct 3 ms 904 KB Output is correct
107 Correct 3 ms 844 KB Output is correct
108 Correct 3 ms 876 KB Output is correct
109 Correct 3 ms 844 KB Output is correct
110 Correct 2 ms 716 KB Output is correct
111 Correct 86 ms 19388 KB Output is correct
112 Correct 83 ms 19372 KB Output is correct
113 Correct 86 ms 19392 KB Output is correct
114 Correct 84 ms 19388 KB Output is correct
115 Correct 78 ms 19372 KB Output is correct
116 Correct 78 ms 19376 KB Output is correct
117 Correct 87 ms 19384 KB Output is correct
118 Correct 166 ms 24252 KB Output is correct
119 Correct 172 ms 24232 KB Output is correct
120 Correct 153 ms 22080 KB Output is correct
121 Correct 81 ms 19448 KB Output is correct
122 Correct 145 ms 22320 KB Output is correct
123 Correct 131 ms 22120 KB Output is correct
124 Correct 145 ms 22124 KB Output is correct
125 Correct 81 ms 19476 KB Output is correct
126 Correct 103 ms 19780 KB Output is correct
127 Correct 109 ms 19684 KB Output is correct
128 Correct 120 ms 19628 KB Output is correct
129 Correct 75 ms 19428 KB Output is correct
130 Correct 136 ms 19372 KB Output is correct
131 Correct 111 ms 19384 KB Output is correct
132 Correct 93 ms 19432 KB Output is correct
133 Correct 78 ms 19392 KB Output is correct
134 Correct 107 ms 19504 KB Output is correct
135 Correct 96 ms 19436 KB Output is correct
136 Correct 96 ms 19372 KB Output is correct
137 Correct 84 ms 19524 KB Output is correct
138 Correct 113 ms 19440 KB Output is correct
139 Correct 90 ms 19436 KB Output is correct
140 Correct 94 ms 19380 KB Output is correct
141 Correct 87 ms 19388 KB Output is correct
142 Correct 138 ms 21940 KB Output is correct
143 Correct 131 ms 21952 KB Output is correct
144 Correct 136 ms 21932 KB Output is correct
145 Correct 113 ms 21992 KB Output is correct
146 Correct 110 ms 21964 KB Output is correct
147 Correct 98 ms 21956 KB Output is correct
148 Correct 100 ms 22012 KB Output is correct
149 Correct 101 ms 21952 KB Output is correct
150 Correct 108 ms 21880 KB Output is correct
151 Correct 96 ms 21764 KB Output is correct
152 Correct 45 ms 16688 KB Output is correct
153 Correct 99 ms 21936 KB Output is correct
154 Correct 99 ms 21948 KB Output is correct
155 Correct 97 ms 21924 KB Output is correct
156 Correct 108 ms 21892 KB Output is correct
157 Correct 111 ms 21932 KB Output is correct
158 Correct 97 ms 21948 KB Output is correct
159 Correct 96 ms 21804 KB Output is correct
160 Correct 45 ms 16684 KB Output is correct
161 Correct 125 ms 20456 KB Output is correct
162 Correct 135 ms 20524 KB Output is correct
163 Correct 123 ms 20416 KB Output is correct
164 Correct 124 ms 20404 KB Output is correct
165 Correct 121 ms 20416 KB Output is correct
166 Correct 52 ms 19428 KB Output is correct
167 Correct 91 ms 21692 KB Output is correct
168 Correct 85 ms 21676 KB Output is correct
169 Correct 83 ms 21548 KB Output is correct
170 Correct 91 ms 21544 KB Output is correct
171 Correct 78 ms 21180 KB Output is correct
172 Correct 85 ms 21936 KB Output is correct
173 Correct 129 ms 19112 KB Output is correct
174 Correct 149 ms 19256 KB Output is correct
175 Correct 133 ms 19052 KB Output is correct
176 Correct 116 ms 18708 KB Output is correct