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Submission #410625

# Submission time Handle Problem Language Result Execution time Memory
410625 2021-05-23T07:39:23 Z Namnamseo Bitaro’s Party (JOI18_bitaro) C++17
100 / 100
 1420 ms 411308 KB 
#include <iostream>
#include <vector>
#include <set>
#include <queue>
#include <utility>
#include <algorithm>
using namespace std;
using pp=pair<int, int>;
const int maxn = int(1e5) + 10;
const int B = 300;

int n, m, q;
vector<int> re[maxn];

vector<pp> prec[maxn];

int seen[maxn];
int nt;

int main()
{
	cin.tie(0)->sync_with_stdio(0);
	cin >> n >> m >> q;
	for (int i=1; i<=m; ++i) {
		int s, e; cin >> s >> e;
		re[e].push_back(s);
	}

	for (int i=1; i<=n; ++i) {
		prec[i].reserve(B);
		prec[i].push_back({0, i});
		for (int j:re[i]) {
			vector<pp> tmp, &v1 = prec[i], &v2 = prec[j];
			int i1 = 0, i2 = 0;
			int s1 = int(v1.size()), s2 = int(v2.size());
			++nt;
			while (int(tmp.size()) < B && (i1 < s1 || i2 < s2)) {
				if (i1 < s1 && (i2 == s2 || v1[i1].first >= v2[i2].first+1)) {
					if (seen[v1[i1].second] != nt) {
						tmp.push_back(v1[i1]);
					}
					++i1;
				} else {
					if (seen[v2[i2].second] != nt) {
						tmp.push_back(v2[i2]);
						++tmp.back().first;
					}
					++i2;
				}
				seen[tmp.back().second] = nt;
			}
			swap(v1, tmp);
		}
	}

	for (;q--;) {
		int dest, igs; cin >> dest >> igs;
		static int ign[maxn];
		++nt;
		for (int i=0; i<igs; ++i) {
			cin >> ign[i];
			seen[ign[i]] = nt;
		}

		if (igs < B) {
			bool found = 0;
			for (auto [dist, from]:prec[dest]) {
				if (seen[from] != nt) {
					cout << dist << '\n';
					found = 1;
					break;
				}
			}
			if (!found) {
				cout << "-1\n";
			}
			continue;
		}

		static int qd[maxn];
		fill(qd+1, qd+dest+1, -1);
		int ans = -1;
		qd[dest] = 0;
		for (int i=dest; 1<=i; --i) if (qd[i] != -1) {
			if (seen[i] != nt) {
				ans = max(ans, qd[i]);
			}
			for (int j:re[i]) {
				qd[j] = max(qd[j], qd[i]+1);
			}
		}

		cout << ans << '\n';
	}

	return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 4 ms 5020 KB Output is correct
5 Correct 6 ms 5792 KB Output is correct
6 Correct 6 ms 5708 KB Output is correct
7 Correct 6 ms 5708 KB Output is correct
8 Correct 14 ms 8360 KB Output is correct
9 Correct 13 ms 8396 KB Output is correct
10 Correct 13 ms 8396 KB Output is correct
11 Correct 13 ms 7972 KB Output is correct
12 Correct 8 ms 6348 KB Output is correct
13 Correct 13 ms 7828 KB Output is correct
14 Correct 12 ms 7428 KB Output is correct
15 Correct 9 ms 6476 KB Output is correct
16 Correct 11 ms 7280 KB Output is correct
17 Correct 12 ms 7524 KB Output is correct
18 Correct 8 ms 6492 KB Output is correct
19 Correct 11 ms 7600 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 4 ms 5020 KB Output is correct
5 Correct 6 ms 5792 KB Output is correct
6 Correct 6 ms 5708 KB Output is correct
7 Correct 6 ms 5708 KB Output is correct
8 Correct 14 ms 8360 KB Output is correct
9 Correct 13 ms 8396 KB Output is correct
10 Correct 13 ms 8396 KB Output is correct
11 Correct 13 ms 7972 KB Output is correct
12 Correct 8 ms 6348 KB Output is correct
13 Correct 13 ms 7828 KB Output is correct
14 Correct 12 ms 7428 KB Output is correct
15 Correct 9 ms 6476 KB Output is correct
16 Correct 11 ms 7280 KB Output is correct
17 Correct 12 ms 7524 KB Output is correct
18 Correct 8 ms 6492 KB Output is correct
19 Correct 11 ms 7600 KB Output is correct
20 Correct 870 ms 9532 KB Output is correct
21 Correct 795 ms 9528 KB Output is correct
22 Correct 867 ms 9464 KB Output is correct
23 Correct 880 ms 9540 KB Output is correct
24 Correct 869 ms 284036 KB Output is correct
25 Correct 903 ms 295716 KB Output is correct
26 Correct 931 ms 294820 KB Output is correct
27 Correct 1098 ms 410600 KB Output is correct
28 Correct 1130 ms 410680 KB Output is correct
29 Correct 1096 ms 410568 KB Output is correct
30 Correct 1128 ms 410084 KB Output is correct
31 Correct 1096 ms 395972 KB Output is correct
32 Correct 1109 ms 409904 KB Output is correct
33 Correct 863 ms 295244 KB Output is correct
34 Correct 780 ms 250128 KB Output is correct
35 Correct 854 ms 293332 KB Output is correct
36 Correct 938 ms 363640 KB Output is correct
37 Correct 891 ms 332848 KB Output is correct
38 Correct 936 ms 364452 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 4 ms 5020 KB Output is correct
5 Correct 6 ms 5792 KB Output is correct
6 Correct 6 ms 5708 KB Output is correct
7 Correct 6 ms 5708 KB Output is correct
8 Correct 14 ms 8360 KB Output is correct
9 Correct 13 ms 8396 KB Output is correct
10 Correct 13 ms 8396 KB Output is correct
11 Correct 13 ms 7972 KB Output is correct
12 Correct 8 ms 6348 KB Output is correct
13 Correct 13 ms 7828 KB Output is correct
14 Correct 12 ms 7428 KB Output is correct
15 Correct 9 ms 6476 KB Output is correct
16 Correct 11 ms 7280 KB Output is correct
17 Correct 12 ms 7524 KB Output is correct
18 Correct 8 ms 6492 KB Output is correct
19 Correct 11 ms 7600 KB Output is correct
20 Correct 870 ms 9532 KB Output is correct
21 Correct 795 ms 9528 KB Output is correct
22 Correct 867 ms 9464 KB Output is correct
23 Correct 880 ms 9540 KB Output is correct
24 Correct 869 ms 284036 KB Output is correct
25 Correct 903 ms 295716 KB Output is correct
26 Correct 931 ms 294820 KB Output is correct
27 Correct 1098 ms 410600 KB Output is correct
28 Correct 1130 ms 410680 KB Output is correct
29 Correct 1096 ms 410568 KB Output is correct
30 Correct 1128 ms 410084 KB Output is correct
31 Correct 1096 ms 395972 KB Output is correct
32 Correct 1109 ms 409904 KB Output is correct
33 Correct 863 ms 295244 KB Output is correct
34 Correct 780 ms 250128 KB Output is correct
35 Correct 854 ms 293332 KB Output is correct
36 Correct 938 ms 363640 KB Output is correct
37 Correct 891 ms 332848 KB Output is correct
38 Correct 936 ms 364452 KB Output is correct
39 Correct 982 ms 287436 KB Output is correct
40 Correct 931 ms 289628 KB Output is correct
41 Correct 919 ms 292684 KB Output is correct
42 Correct 904 ms 290436 KB Output is correct
43 Correct 892 ms 290128 KB Output is correct
44 Correct 903 ms 9924 KB Output is correct
45 Correct 867 ms 9692 KB Output is correct
46 Correct 860 ms 9536 KB Output is correct
47 Correct 892 ms 9432 KB Output is correct
48 Correct 857 ms 9464 KB Output is correct
49 Correct 1177 ms 410392 KB Output is correct
50 Correct 1108 ms 409976 KB Output is correct
51 Correct 816 ms 9796 KB Output is correct
52 Correct 783 ms 9500 KB Output is correct
53 Correct 978 ms 362676 KB Output is correct
54 Correct 941 ms 332812 KB Output is correct
55 Correct 923 ms 362904 KB Output is correct
56 Correct 907 ms 333248 KB Output is correct
57 Correct 884 ms 9876 KB Output is correct
58 Correct 924 ms 9852 KB Output is correct
59 Correct 869 ms 9492 KB Output is correct
60 Correct 877 ms 9608 KB Output is correct
61 Correct 1214 ms 410308 KB Output is correct
62 Correct 1000 ms 363920 KB Output is correct
63 Correct 914 ms 332356 KB Output is correct
64 Correct 1420 ms 410332 KB Output is correct
65 Correct 1096 ms 363332 KB Output is correct
66 Correct 990 ms 334428 KB Output is correct
67 Correct 1107 ms 410324 KB Output is correct
68 Correct 1024 ms 364004 KB Output is correct
69 Correct 886 ms 330668 KB Output is correct
70 Correct 1142 ms 410692 KB Output is correct
71 Correct 1016 ms 364344 KB Output is correct
72 Correct 920 ms 334048 KB Output is correct
73 Correct 1140 ms 410816 KB Output is correct
74 Correct 975 ms 364316 KB Output is correct
75 Correct 917 ms 333972 KB Output is correct
76 Correct 1173 ms 411308 KB Output is correct
77 Correct 1118 ms 410772 KB Output is correct
78 Correct 1121 ms 411148 KB Output is correct
79 Correct 829 ms 10184 KB Output is correct
80 Correct 805 ms 9916 KB Output is correct
81 Correct 784 ms 9968 KB Output is correct
82 Correct 1150 ms 410692 KB Output is correct
83 Correct 1175 ms 396548 KB Output is correct
84 Correct 1103 ms 410244 KB Output is correct
85 Correct 1099 ms 395504 KB Output is correct
86 Correct 1123 ms 410420 KB Output is correct
87 Correct 1117 ms 396612 KB Output is correct
88 Correct 891 ms 10260 KB Output is correct
89 Correct 906 ms 10052 KB Output is correct
90 Correct 860 ms 9784 KB Output is correct
91 Correct 902 ms 9724 KB Output is correct
92 Correct 860 ms 9804 KB Output is correct
93 Correct 874 ms 9796 KB Output is correct
94 Correct 903 ms 294936 KB Output is correct
95 Correct 788 ms 249156 KB Output is correct
96 Correct 862 ms 293020 KB Output is correct
97 Correct 760 ms 252956 KB Output is correct
98 Correct 869 ms 294724 KB Output is correct
99 Correct 752 ms 252408 KB Output is correct
100 Correct 924 ms 10160 KB Output is correct
101 Correct 889 ms 10172 KB Output is correct
102 Correct 881 ms 9708 KB Output is correct
103 Correct 886 ms 9772 KB Output is correct
104 Correct 878 ms 9732 KB Output is correct
105 Correct 864 ms 9924 KB Output is correct
106 Correct 983 ms 363184 KB Output is correct
107 Correct 944 ms 333228 KB Output is correct
108 Correct 991 ms 364660 KB Output is correct
109 Correct 950 ms 332856 KB Output is correct
110 Correct 1020 ms 364832 KB Output is correct
111 Correct 928 ms 334572 KB Output is correct
112 Correct 880 ms 10100 KB Output is correct
113 Correct 931 ms 10164 KB Output is correct
114 Correct 853 ms 9996 KB Output is correct
115 Correct 876 ms 9756 KB Output is correct
116 Correct 874 ms 9968 KB Output is correct
117 Correct 882 ms 9796 KB Output is correct
118 Correct 1099 ms 410200 KB Output is correct
119 Correct 1006 ms 364348 KB Output is correct
120 Correct 889 ms 333216 KB Output is correct
121 Correct 1117 ms 410200 KB Output is correct
122 Correct 929 ms 363496 KB Output is correct
123 Correct 888 ms 332996 KB Output is correct
124 Correct 1109 ms 410200 KB Output is correct
125 Correct 936 ms 364228 KB Output is correct
126 Correct 887 ms 331672 KB Output is correct