/** Baltic Olympiad in Informatics 2024 **/
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int maxn = 300001;
vector<int> adj[maxn];
int a[maxn];
priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> v[maxn];
void dfs(int x) {
for(int i : adj[x]) {
dfs(i);
if(v[i].size() > v[x].size()) {
swap(v[i], v[x]);
}
while(v[i].size()) {
v[x].push(v[i].top());
v[i].pop();
}
}
if(a[x] >= 0) {
v[x].push({0, a[x]});
} else {
pair<int, int> cur = {-a[x], a[x]};
while(v[x].size() && cur.second < 0) {
pair<int, int> tmp = v[x].top();
v[x].pop();
cur.first = max(cur.first, tmp.first - cur.second);
cur.second += tmp.second;
}
if(cur.second >= 0) {
while(v[x].size() && v[x].top().first <= cur.first) {
cur.second += v[x].top().second;
v[x].pop();
}
v[x].push(cur);
}
}
}
int32_t main()
{
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int n, s, x, ans = 0;
cin >> n >> s;
a[0] = s;
for(int i = 1; i <= n; i++) {
cin >> a[i] >> x;
adj[x].push_back(i);
}
dfs(0);
while(v[0].size() && v[0].top().first <= ans) {
ans += v[0].top().second;
v[0].pop();
}
cout << ans-s;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
15 ms |
36188 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
18012 KB |
Output is correct |
2 |
Correct |
3 ms |
18012 KB |
Output is correct |
3 |
Correct |
3 ms |
18012 KB |
Output is correct |
4 |
Correct |
3 ms |
18012 KB |
Output is correct |
5 |
Correct |
3 ms |
18268 KB |
Output is correct |
6 |
Correct |
4 ms |
18012 KB |
Output is correct |
7 |
Correct |
4 ms |
18012 KB |
Output is correct |
8 |
Correct |
4 ms |
18012 KB |
Output is correct |
9 |
Correct |
3 ms |
18012 KB |
Output is correct |
10 |
Correct |
3 ms |
18012 KB |
Output is correct |
11 |
Correct |
4 ms |
18268 KB |
Output is correct |
12 |
Correct |
3 ms |
18268 KB |
Output is correct |
13 |
Correct |
3 ms |
18032 KB |
Output is correct |
14 |
Correct |
3 ms |
18012 KB |
Output is correct |
15 |
Correct |
4 ms |
18012 KB |
Output is correct |
16 |
Correct |
4 ms |
18012 KB |
Output is correct |
17 |
Correct |
4 ms |
18268 KB |
Output is correct |
18 |
Correct |
4 ms |
18268 KB |
Output is correct |
19 |
Correct |
3 ms |
18012 KB |
Output is correct |
20 |
Correct |
4 ms |
18012 KB |
Output is correct |
21 |
Correct |
3 ms |
18012 KB |
Output is correct |
22 |
Correct |
3 ms |
18012 KB |
Output is correct |
23 |
Correct |
3 ms |
18268 KB |
Output is correct |
24 |
Correct |
3 ms |
18268 KB |
Output is correct |
25 |
Correct |
3 ms |
18012 KB |
Output is correct |
26 |
Correct |
3 ms |
18012 KB |
Output is correct |
27 |
Correct |
4 ms |
18012 KB |
Output is correct |
28 |
Correct |
3 ms |
18008 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
18012 KB |
Output is correct |
2 |
Correct |
3 ms |
18012 KB |
Output is correct |
3 |
Correct |
3 ms |
18012 KB |
Output is correct |
4 |
Correct |
3 ms |
18012 KB |
Output is correct |
5 |
Correct |
3 ms |
18268 KB |
Output is correct |
6 |
Correct |
4 ms |
18012 KB |
Output is correct |
7 |
Correct |
4 ms |
18012 KB |
Output is correct |
8 |
Correct |
4 ms |
18012 KB |
Output is correct |
9 |
Correct |
3 ms |
18012 KB |
Output is correct |
10 |
Correct |
3 ms |
18012 KB |
Output is correct |
11 |
Correct |
4 ms |
18268 KB |
Output is correct |
12 |
Correct |
3 ms |
18268 KB |
Output is correct |
13 |
Correct |
3 ms |
18032 KB |
Output is correct |
14 |
Correct |
3 ms |
18012 KB |
Output is correct |
15 |
Correct |
4 ms |
18012 KB |
Output is correct |
16 |
Correct |
4 ms |
18012 KB |
Output is correct |
17 |
Correct |
4 ms |
18268 KB |
Output is correct |
18 |
Correct |
4 ms |
18268 KB |
Output is correct |
19 |
Correct |
3 ms |
18012 KB |
Output is correct |
20 |
Correct |
4 ms |
18012 KB |
Output is correct |
21 |
Correct |
3 ms |
18012 KB |
Output is correct |
22 |
Correct |
3 ms |
18012 KB |
Output is correct |
23 |
Correct |
3 ms |
18268 KB |
Output is correct |
24 |
Correct |
3 ms |
18268 KB |
Output is correct |
25 |
Correct |
3 ms |
18012 KB |
Output is correct |
26 |
Correct |
3 ms |
18012 KB |
Output is correct |
27 |
Correct |
4 ms |
18012 KB |
Output is correct |
28 |
Correct |
3 ms |
18008 KB |
Output is correct |
29 |
Correct |
82 ms |
30664 KB |
Output is correct |
30 |
Correct |
73 ms |
30660 KB |
Output is correct |
31 |
Correct |
65 ms |
29340 KB |
Output is correct |
32 |
Correct |
97 ms |
61656 KB |
Output is correct |
33 |
Correct |
79 ms |
46668 KB |
Output is correct |
34 |
Correct |
77 ms |
40780 KB |
Output is correct |
35 |
Correct |
40 ms |
24404 KB |
Output is correct |
36 |
Correct |
76 ms |
34680 KB |
Output is correct |
37 |
Correct |
76 ms |
30660 KB |
Output is correct |
38 |
Correct |
91 ms |
61224 KB |
Output is correct |
39 |
Correct |
81 ms |
48188 KB |
Output is correct |
40 |
Correct |
90 ms |
35908 KB |
Output is correct |
41 |
Correct |
91 ms |
30148 KB |
Output is correct |
42 |
Correct |
33 ms |
28616 KB |
Output is correct |
43 |
Correct |
80 ms |
40644 KB |
Output is correct |
44 |
Correct |
87 ms |
61644 KB |
Output is correct |
45 |
Correct |
80 ms |
47948 KB |
Output is correct |
46 |
Correct |
84 ms |
40532 KB |
Output is correct |
47 |
Correct |
86 ms |
30152 KB |
Output is correct |
48 |
Correct |
74 ms |
29640 KB |
Output is correct |
49 |
Correct |
82 ms |
30660 KB |
Output is correct |
50 |
Correct |
89 ms |
61644 KB |
Output is correct |
51 |
Correct |
64 ms |
41424 KB |
Output is correct |
52 |
Correct |
85 ms |
36272 KB |
Output is correct |
53 |
Correct |
54 ms |
34508 KB |
Output is correct |
54 |
Correct |
70 ms |
29512 KB |
Output is correct |
55 |
Correct |
86 ms |
30664 KB |
Output is correct |
56 |
Correct |
114 ms |
61604 KB |
Output is correct |
57 |
Correct |
96 ms |
46664 KB |
Output is correct |
58 |
Correct |
73 ms |
36168 KB |
Output is correct |
59 |
Correct |
82 ms |
35528 KB |
Output is correct |
60 |
Correct |
58 ms |
29892 KB |
Output is correct |
61 |
Correct |
76 ms |
40000 KB |
Output is correct |
62 |
Correct |
93 ms |
37192 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
18012 KB |
Output is correct |
2 |
Correct |
3 ms |
18012 KB |
Output is correct |
3 |
Correct |
3 ms |
18012 KB |
Output is correct |
4 |
Correct |
3 ms |
18012 KB |
Output is correct |
5 |
Correct |
3 ms |
18268 KB |
Output is correct |
6 |
Correct |
4 ms |
18012 KB |
Output is correct |
7 |
Correct |
4 ms |
18012 KB |
Output is correct |
8 |
Correct |
4 ms |
18012 KB |
Output is correct |
9 |
Correct |
3 ms |
18012 KB |
Output is correct |
10 |
Correct |
3 ms |
18012 KB |
Output is correct |
11 |
Correct |
4 ms |
18268 KB |
Output is correct |
12 |
Correct |
3 ms |
18268 KB |
Output is correct |
13 |
Correct |
3 ms |
18032 KB |
Output is correct |
14 |
Correct |
3 ms |
18012 KB |
Output is correct |
15 |
Correct |
4 ms |
18012 KB |
Output is correct |
16 |
Correct |
4 ms |
18012 KB |
Output is correct |
17 |
Correct |
4 ms |
18268 KB |
Output is correct |
18 |
Correct |
4 ms |
18268 KB |
Output is correct |
19 |
Correct |
3 ms |
18012 KB |
Output is correct |
20 |
Correct |
4 ms |
18012 KB |
Output is correct |
21 |
Correct |
3 ms |
18012 KB |
Output is correct |
22 |
Correct |
3 ms |
18012 KB |
Output is correct |
23 |
Correct |
3 ms |
18268 KB |
Output is correct |
24 |
Correct |
3 ms |
18268 KB |
Output is correct |
25 |
Correct |
3 ms |
18012 KB |
Output is correct |
26 |
Correct |
3 ms |
18012 KB |
Output is correct |
27 |
Correct |
4 ms |
18012 KB |
Output is correct |
28 |
Correct |
3 ms |
18008 KB |
Output is correct |
29 |
Correct |
3 ms |
18008 KB |
Output is correct |
30 |
Correct |
4 ms |
18012 KB |
Output is correct |
31 |
Correct |
3 ms |
18080 KB |
Output is correct |
32 |
Correct |
3 ms |
18012 KB |
Output is correct |
33 |
Correct |
3 ms |
18012 KB |
Output is correct |
34 |
Correct |
3 ms |
18036 KB |
Output is correct |
35 |
Correct |
3 ms |
18036 KB |
Output is correct |
36 |
Correct |
3 ms |
18012 KB |
Output is correct |
37 |
Correct |
3 ms |
18148 KB |
Output is correct |
38 |
Correct |
3 ms |
18012 KB |
Output is correct |
39 |
Correct |
3 ms |
18012 KB |
Output is correct |
40 |
Correct |
4 ms |
18012 KB |
Output is correct |
41 |
Correct |
3 ms |
18012 KB |
Output is correct |
42 |
Correct |
3 ms |
18008 KB |
Output is correct |
43 |
Correct |
4 ms |
18012 KB |
Output is correct |
44 |
Correct |
3 ms |
18012 KB |
Output is correct |
45 |
Correct |
3 ms |
18028 KB |
Output is correct |
46 |
Correct |
3 ms |
18012 KB |
Output is correct |
47 |
Correct |
4 ms |
18036 KB |
Output is correct |
48 |
Correct |
4 ms |
18012 KB |
Output is correct |
49 |
Correct |
3 ms |
18012 KB |
Output is correct |
50 |
Correct |
3 ms |
18012 KB |
Output is correct |
51 |
Correct |
3 ms |
18012 KB |
Output is correct |
52 |
Correct |
3 ms |
18012 KB |
Output is correct |
53 |
Correct |
3 ms |
18012 KB |
Output is correct |
54 |
Correct |
4 ms |
18012 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
15 ms |
36188 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |