oj.uz

Submission #965405

# Submission time Handle Problem Language Result Execution time Memory
965405 2024-04-18T12:54:34 Z Trisanu_Das Bitaro’s Party (JOI18_bitaro) C++17
100 / 100
 922 ms 215528 KB 
#include <bits/stdc++.h>
#define maxn 100010
using namespace std;
const int B = 150;
int n, m, q;
typedef pair<int, int> pi;
vector<int> prv[maxn];
vector<pi> far[maxn];
vector<int> vis(maxn, -1), val(maxn);
vector<int> y(maxn, -1);
 
bool cmp(int x, int y){
	return val[x] > val[y];
}
 
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cin >> n >> m >> q;
	for (int i = 0; i < m; i ++){
		int x, y;
		cin >> x >> y;
		x --; y --;
		prv[y].push_back(x);
	}
	for (int i = 0; i < n; i ++){
		vector<int> all;
		for (int j = 0; j < (int)prv[i].size(); j ++){
			int x = prv[i][j];
			for (int k = 0; k < far[x].size(); k ++){
				int z = far[x][k].second;
				if (vis[z] != i){
					vis[z] = i;
					all.push_back(z);
					val[z] = far[x][k].first + 1;
				} else{
					val[z] = max(val[z], far[x][k].first + 1);
				}
			}
			if (vis[x] != i){
				vis[x] = i;
				all.push_back(x);
				val[x] = 1;
			}
		}
		all.push_back(i);
		sort(all.begin(), all.end(), cmp);
		for (int j = 0; j < min((int)all.size(), B); j ++){
			far[i].push_back(make_pair(val[all[j]], all[j]));
		}
	}
	while(q --){
		int t; cin >> t; t --;
		int r; cin >> r;
		for (int i = 0; i < r; i ++){
			int p; cin >> p; y[p - 1] = q;
		}
		if (r >= B){
			vector<int> dp(n, -1);
			for (int i = 0; i <= t; i ++){
				if (y[i] != q){
					dp[i] = max(dp[i], 0);
				}
				for (int j = 0; j < (int)prv[i].size(); j ++){
					if (dp[prv[i][j]] != -1) dp[i] = max(dp[i], dp[prv[i][j]] + 1);
				}
			}
			cout << dp[t] << '\n';
		} else{
			for (int i = 0; i < (int)far[t].size(); i ++){
				if (y[far[t][i].second] != q){
					cout << far[t][i].first << '\n';
					goto done;
				}
			}
			cout << -1 << '\n';
			done: continue;
		}
	}
}

Compilation message

bitaro.cpp: In function 'int main()':
bitaro.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |    for (int k = 0; k < far[x].size(); k ++){
      |                    ~~^~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6236 KB Output is correct
2 Correct 2 ms 6236 KB Output is correct
3 Correct 2 ms 6236 KB Output is correct
4 Correct 2 ms 6148 KB Output is correct
5 Correct 4 ms 6744 KB Output is correct
6 Correct 4 ms 6748 KB Output is correct
7 Correct 4 ms 6748 KB Output is correct
8 Correct 7 ms 8064 KB Output is correct
9 Correct 7 ms 8028 KB Output is correct
10 Correct 7 ms 8028 KB Output is correct
11 Correct 7 ms 8024 KB Output is correct
12 Correct 6 ms 7260 KB Output is correct
13 Correct 7 ms 8028 KB Output is correct
14 Correct 6 ms 7256 KB Output is correct
15 Correct 5 ms 7000 KB Output is correct
16 Correct 6 ms 7260 KB Output is correct
17 Correct 6 ms 7512 KB Output is correct
18 Correct 5 ms 7004 KB Output is correct
19 Correct 6 ms 7516 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6236 KB Output is correct
2 Correct 2 ms 6236 KB Output is correct
3 Correct 2 ms 6236 KB Output is correct
4 Correct 2 ms 6148 KB Output is correct
5 Correct 4 ms 6744 KB Output is correct
6 Correct 4 ms 6748 KB Output is correct
7 Correct 4 ms 6748 KB Output is correct
8 Correct 7 ms 8064 KB Output is correct
9 Correct 7 ms 8028 KB Output is correct
10 Correct 7 ms 8028 KB Output is correct
11 Correct 7 ms 8024 KB Output is correct
12 Correct 6 ms 7260 KB Output is correct
13 Correct 7 ms 8028 KB Output is correct
14 Correct 6 ms 7256 KB Output is correct
15 Correct 5 ms 7000 KB Output is correct
16 Correct 6 ms 7260 KB Output is correct
17 Correct 6 ms 7512 KB Output is correct
18 Correct 5 ms 7004 KB Output is correct
19 Correct 6 ms 7516 KB Output is correct
20 Correct 97 ms 10792 KB Output is correct
21 Correct 97 ms 10832 KB Output is correct
22 Correct 97 ms 10800 KB Output is correct
23 Correct 125 ms 10664 KB Output is correct
24 Correct 644 ms 154200 KB Output is correct
25 Correct 656 ms 158564 KB Output is correct
26 Correct 654 ms 158984 KB Output is correct
27 Correct 634 ms 214296 KB Output is correct
28 Correct 635 ms 214064 KB Output is correct
29 Correct 637 ms 214096 KB Output is correct
30 Correct 588 ms 214192 KB Output is correct
31 Correct 651 ms 208756 KB Output is correct
32 Correct 604 ms 214096 KB Output is correct
33 Correct 449 ms 136128 KB Output is correct
34 Correct 516 ms 117592 KB Output is correct
35 Correct 446 ms 135320 KB Output is correct
36 Correct 554 ms 175208 KB Output is correct
37 Correct 623 ms 163156 KB Output is correct
38 Correct 514 ms 175756 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6236 KB Output is correct
2 Correct 2 ms 6236 KB Output is correct
3 Correct 2 ms 6236 KB Output is correct
4 Correct 2 ms 6148 KB Output is correct
5 Correct 4 ms 6744 KB Output is correct
6 Correct 4 ms 6748 KB Output is correct
7 Correct 4 ms 6748 KB Output is correct
8 Correct 7 ms 8064 KB Output is correct
9 Correct 7 ms 8028 KB Output is correct
10 Correct 7 ms 8028 KB Output is correct
11 Correct 7 ms 8024 KB Output is correct
12 Correct 6 ms 7260 KB Output is correct
13 Correct 7 ms 8028 KB Output is correct
14 Correct 6 ms 7256 KB Output is correct
15 Correct 5 ms 7000 KB Output is correct
16 Correct 6 ms 7260 KB Output is correct
17 Correct 6 ms 7512 KB Output is correct
18 Correct 5 ms 7004 KB Output is correct
19 Correct 6 ms 7516 KB Output is correct
20 Correct 97 ms 10792 KB Output is correct
21 Correct 97 ms 10832 KB Output is correct
22 Correct 97 ms 10800 KB Output is correct
23 Correct 125 ms 10664 KB Output is correct
24 Correct 644 ms 154200 KB Output is correct
25 Correct 656 ms 158564 KB Output is correct
26 Correct 654 ms 158984 KB Output is correct
27 Correct 634 ms 214296 KB Output is correct
28 Correct 635 ms 214064 KB Output is correct
29 Correct 637 ms 214096 KB Output is correct
30 Correct 588 ms 214192 KB Output is correct
31 Correct 651 ms 208756 KB Output is correct
32 Correct 604 ms 214096 KB Output is correct
33 Correct 449 ms 136128 KB Output is correct
34 Correct 516 ms 117592 KB Output is correct
35 Correct 446 ms 135320 KB Output is correct
36 Correct 554 ms 175208 KB Output is correct
37 Correct 623 ms 163156 KB Output is correct
38 Correct 514 ms 175756 KB Output is correct
39 Correct 712 ms 156440 KB Output is correct
40 Correct 689 ms 156868 KB Output is correct
41 Correct 644 ms 157216 KB Output is correct
42 Correct 717 ms 157444 KB Output is correct
43 Correct 694 ms 156616 KB Output is correct
44 Correct 117 ms 12112 KB Output is correct
45 Correct 104 ms 11184 KB Output is correct
46 Correct 105 ms 11136 KB Output is correct
47 Correct 113 ms 11124 KB Output is correct
48 Correct 97 ms 10832 KB Output is correct
49 Correct 676 ms 215136 KB Output is correct
50 Correct 640 ms 213696 KB Output is correct
51 Correct 119 ms 11928 KB Output is correct
52 Correct 100 ms 10936 KB Output is correct
53 Correct 547 ms 175620 KB Output is correct
54 Correct 663 ms 163576 KB Output is correct
55 Correct 536 ms 174288 KB Output is correct
56 Correct 643 ms 163168 KB Output is correct
57 Correct 119 ms 11852 KB Output is correct
58 Correct 129 ms 11856 KB Output is correct
59 Correct 119 ms 11092 KB Output is correct
60 Correct 102 ms 10960 KB Output is correct
61 Correct 690 ms 214216 KB Output is correct
62 Correct 591 ms 175720 KB Output is correct
63 Correct 663 ms 162852 KB Output is correct
64 Correct 810 ms 214240 KB Output is correct
65 Correct 726 ms 174928 KB Output is correct
66 Correct 821 ms 163940 KB Output is correct
67 Correct 922 ms 214264 KB Output is correct
68 Correct 839 ms 175792 KB Output is correct
69 Correct 918 ms 161820 KB Output is correct
70 Correct 643 ms 214340 KB Output is correct
71 Correct 533 ms 175400 KB Output is correct
72 Correct 656 ms 163144 KB Output is correct
73 Correct 662 ms 214460 KB Output is correct
74 Correct 560 ms 175728 KB Output is correct
75 Correct 614 ms 163052 KB Output is correct
76 Correct 656 ms 215364 KB Output is correct
77 Correct 780 ms 214612 KB Output is correct
78 Correct 633 ms 214396 KB Output is correct
79 Correct 131 ms 12116 KB Output is correct
80 Correct 134 ms 11360 KB Output is correct
81 Correct 98 ms 10752 KB Output is correct
82 Correct 637 ms 215528 KB Output is correct
83 Correct 700 ms 209748 KB Output is correct
84 Correct 746 ms 214216 KB Output is correct
85 Correct 815 ms 208956 KB Output is correct
86 Correct 611 ms 214732 KB Output is correct
87 Correct 679 ms 209656 KB Output is correct
88 Correct 118 ms 12120 KB Output is correct
89 Correct 117 ms 12116 KB Output is correct
90 Correct 126 ms 11088 KB Output is correct
91 Correct 127 ms 11028 KB Output is correct
92 Correct 101 ms 10832 KB Output is correct
93 Correct 100 ms 10836 KB Output is correct
94 Correct 461 ms 137220 KB Output is correct
95 Correct 567 ms 118004 KB Output is correct
96 Correct 583 ms 136136 KB Output is correct
97 Correct 674 ms 119188 KB Output is correct
98 Correct 449 ms 136140 KB Output is correct
99 Correct 532 ms 119252 KB Output is correct
100 Correct 137 ms 12216 KB Output is correct
101 Correct 124 ms 12016 KB Output is correct
102 Correct 125 ms 11404 KB Output is correct
103 Correct 143 ms 11196 KB Output is correct
104 Correct 104 ms 10832 KB Output is correct
105 Correct 104 ms 10696 KB Output is correct
106 Correct 568 ms 175844 KB Output is correct
107 Correct 647 ms 164232 KB Output is correct
108 Correct 690 ms 176112 KB Output is correct
109 Correct 741 ms 163380 KB Output is correct
110 Correct 526 ms 176080 KB Output is correct
111 Correct 627 ms 163760 KB Output is correct
112 Correct 116 ms 12004 KB Output is correct
113 Correct 119 ms 11964 KB Output is correct
114 Correct 129 ms 11092 KB Output is correct
115 Correct 131 ms 11128 KB Output is correct
116 Correct 97 ms 10836 KB Output is correct
117 Correct 101 ms 10688 KB Output is correct
118 Correct 638 ms 213700 KB Output is correct
119 Correct 531 ms 175412 KB Output is correct
120 Correct 631 ms 162488 KB Output is correct
121 Correct 644 ms 214128 KB Output is correct
122 Correct 520 ms 174676 KB Output is correct
123 Correct 617 ms 162300 KB Output is correct
124 Correct 665 ms 213908 KB Output is correct
125 Correct 551 ms 175700 KB Output is correct
126 Correct 626 ms 161980 KB Output is correct