#include <iostream>
#include <algorithm>
#include <cstdio>
#include <map>
#include <vector>
using namespace std;
const int MAXN = 100007;
int N, par[MAXN], ch[MAXN][2], dep[MAXN], val[MAXN], ft[MAXN];
bool isRoot(int u) { return u != ch[par[u]][0] && u != ch[par[u]][1]; }
bool dir(int u) { return u == ch[par[u]][1]; }
void rot(int u) {
int p = par[u], g = par[p], k = dir(u);
if (!isRoot(p)) ch[g][dir(p)] = u;
par[u] = g;
par[ch[p][k] = ch[u][!k]] = p;
par[ch[u][!k] = p] = u;
}
void splay(int u) {
for (; !isRoot(u); rot(u)) {
if (!isRoot(par[u])) rot(dir(u) == dir(par[u]) ? par[u] : u);
}
}
int64_t access(int u) {
vector<tuple<int, int, int>> segs;
for (int v = 0; u; v = u, u = par[v]) {
splay(u);
int x = ch[u][1];
ch[u][1] = v;
while (ch[u][0]) u = ch[u][0];
splay(u);
if (x) {
while (ch[x][0]) x = ch[x][0];
splay(x);
val[x] = val[u];
}
if (v) { // ignore first segment ({B_j})
segs.emplace_back(val[u], dep[u] + 1, dep[v] - dep[u]);
}
}
int64_t cost = 0;
sort(segs.begin(), segs.end());
reverse(segs.begin(), segs.end());
for (auto tmp : segs) {
int p, x;
tie(ignore, p, x) = tmp;
for (int i = p; i > 0; i -= i & (-i)) cost += (int64_t) ft[i] * x;
for (int i = p; i <= N; i += i & (-i)) ft[i] += x;
}
for (auto tmp : segs) {
int p, x;
tie(ignore, p, x) = tmp;
for (int i = p; i <= N; i += i & (-i)) ft[i] -= x;
}
return cost;
}
int main() {
cin.tie(0)->sync_with_stdio(0);
cin >> N;
for (int u = 1; u <= N; ++u) {
cin >> val[u];
}
for (int i = 0; i < N - 1; ++i) {
int u, v;
cin >> u >> v;
dep[v] = dep[u] + 1, par[v] = u;
cout << access(v) << '\n';
val[1] = val[v];
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
492 KB |
Output is correct |
| 34 |
Correct |
1 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
364 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| 37 |
Correct |
1 ms |
384 KB |
Output is correct |
| 38 |
Correct |
1 ms |
364 KB |
Output is correct |
| 39 |
Correct |
1 ms |
364 KB |
Output is correct |
| 40 |
Correct |
1 ms |
364 KB |
Output is correct |
| 41 |
Correct |
1 ms |
364 KB |
Output is correct |
| 42 |
Correct |
1 ms |
364 KB |
Output is correct |
| 43 |
Correct |
1 ms |
364 KB |
Output is correct |
| 44 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
492 KB |
Output is correct |
| 34 |
Correct |
1 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
364 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| 37 |
Correct |
1 ms |
384 KB |
Output is correct |
| 38 |
Correct |
1 ms |
364 KB |
Output is correct |
| 39 |
Correct |
1 ms |
364 KB |
Output is correct |
| 40 |
Correct |
1 ms |
364 KB |
Output is correct |
| 41 |
Correct |
1 ms |
364 KB |
Output is correct |
| 42 |
Correct |
1 ms |
364 KB |
Output is correct |
| 43 |
Correct |
1 ms |
364 KB |
Output is correct |
| 44 |
Correct |
1 ms |
364 KB |
Output is correct |
| 45 |
Correct |
2 ms |
364 KB |
Output is correct |
| 46 |
Correct |
5 ms |
492 KB |
Output is correct |
| 47 |
Correct |
5 ms |
492 KB |
Output is correct |
| 48 |
Correct |
5 ms |
492 KB |
Output is correct |
| 49 |
Correct |
3 ms |
492 KB |
Output is correct |
| 50 |
Correct |
3 ms |
492 KB |
Output is correct |
| 51 |
Correct |
4 ms |
492 KB |
Output is correct |
| 52 |
Correct |
3 ms |
620 KB |
Output is correct |
| 53 |
Correct |
3 ms |
620 KB |
Output is correct |
| 54 |
Correct |
3 ms |
620 KB |
Output is correct |
| 55 |
Correct |
3 ms |
620 KB |
Output is correct |
| 56 |
Correct |
3 ms |
492 KB |
Output is correct |
| 57 |
Correct |
5 ms |
492 KB |
Output is correct |
| 58 |
Correct |
8 ms |
492 KB |
Output is correct |
| 59 |
Correct |
6 ms |
492 KB |
Output is correct |
| 60 |
Correct |
6 ms |
492 KB |
Output is correct |
| 61 |
Correct |
5 ms |
492 KB |
Output is correct |
| 62 |
Correct |
5 ms |
492 KB |
Output is correct |
| 63 |
Correct |
4 ms |
492 KB |
Output is correct |
| 64 |
Correct |
4 ms |
492 KB |
Output is correct |
| 65 |
Correct |
4 ms |
492 KB |
Output is correct |
| 66 |
Correct |
5 ms |
540 KB |
Output is correct |
| 67 |
Correct |
4 ms |
492 KB |
Output is correct |
| 68 |
Correct |
3 ms |
492 KB |
Output is correct |
| 69 |
Correct |
3 ms |
620 KB |
Output is correct |
| 70 |
Correct |
3 ms |
620 KB |
Output is correct |
| 71 |
Correct |
3 ms |
492 KB |
Output is correct |
| 72 |
Correct |
5 ms |
492 KB |
Output is correct |
| 73 |
Correct |
7 ms |
492 KB |
Output is correct |
| 74 |
Correct |
4 ms |
492 KB |
Output is correct |
| 75 |
Correct |
5 ms |
492 KB |
Output is correct |
| 76 |
Correct |
5 ms |
492 KB |
Output is correct |
| 77 |
Correct |
3 ms |
492 KB |
Output is correct |
| 78 |
Correct |
3 ms |
492 KB |
Output is correct |
| 79 |
Correct |
3 ms |
620 KB |
Output is correct |
| 80 |
Correct |
3 ms |
492 KB |
Output is correct |
| 81 |
Correct |
5 ms |
492 KB |
Output is correct |
| 82 |
Correct |
4 ms |
492 KB |
Output is correct |
| 83 |
Correct |
4 ms |
492 KB |
Output is correct |
| 84 |
Correct |
4 ms |
492 KB |
Output is correct |
| 85 |
Correct |
4 ms |
492 KB |
Output is correct |
| 86 |
Correct |
4 ms |
492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
492 KB |
Output is correct |
| 34 |
Correct |
1 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
364 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| 37 |
Correct |
1 ms |
384 KB |
Output is correct |
| 38 |
Correct |
1 ms |
364 KB |
Output is correct |
| 39 |
Correct |
1 ms |
364 KB |
Output is correct |
| 40 |
Correct |
1 ms |
364 KB |
Output is correct |
| 41 |
Correct |
1 ms |
364 KB |
Output is correct |
| 42 |
Correct |
1 ms |
364 KB |
Output is correct |
| 43 |
Correct |
1 ms |
364 KB |
Output is correct |
| 44 |
Correct |
1 ms |
364 KB |
Output is correct |
| 45 |
Correct |
2 ms |
364 KB |
Output is correct |
| 46 |
Correct |
5 ms |
492 KB |
Output is correct |
| 47 |
Correct |
5 ms |
492 KB |
Output is correct |
| 48 |
Correct |
5 ms |
492 KB |
Output is correct |
| 49 |
Correct |
3 ms |
492 KB |
Output is correct |
| 50 |
Correct |
3 ms |
492 KB |
Output is correct |
| 51 |
Correct |
4 ms |
492 KB |
Output is correct |
| 52 |
Correct |
3 ms |
620 KB |
Output is correct |
| 53 |
Correct |
3 ms |
620 KB |
Output is correct |
| 54 |
Correct |
3 ms |
620 KB |
Output is correct |
| 55 |
Correct |
3 ms |
620 KB |
Output is correct |
| 56 |
Correct |
3 ms |
492 KB |
Output is correct |
| 57 |
Correct |
5 ms |
492 KB |
Output is correct |
| 58 |
Correct |
8 ms |
492 KB |
Output is correct |
| 59 |
Correct |
6 ms |
492 KB |
Output is correct |
| 60 |
Correct |
6 ms |
492 KB |
Output is correct |
| 61 |
Correct |
5 ms |
492 KB |
Output is correct |
| 62 |
Correct |
5 ms |
492 KB |
Output is correct |
| 63 |
Correct |
4 ms |
492 KB |
Output is correct |
| 64 |
Correct |
4 ms |
492 KB |
Output is correct |
| 65 |
Correct |
4 ms |
492 KB |
Output is correct |
| 66 |
Correct |
5 ms |
540 KB |
Output is correct |
| 67 |
Correct |
4 ms |
492 KB |
Output is correct |
| 68 |
Correct |
3 ms |
492 KB |
Output is correct |
| 69 |
Correct |
3 ms |
620 KB |
Output is correct |
| 70 |
Correct |
3 ms |
620 KB |
Output is correct |
| 71 |
Correct |
3 ms |
492 KB |
Output is correct |
| 72 |
Correct |
5 ms |
492 KB |
Output is correct |
| 73 |
Correct |
7 ms |
492 KB |
Output is correct |
| 74 |
Correct |
4 ms |
492 KB |
Output is correct |
| 75 |
Correct |
5 ms |
492 KB |
Output is correct |
| 76 |
Correct |
5 ms |
492 KB |
Output is correct |
| 77 |
Correct |
3 ms |
492 KB |
Output is correct |
| 78 |
Correct |
3 ms |
492 KB |
Output is correct |
| 79 |
Correct |
3 ms |
620 KB |
Output is correct |
| 80 |
Correct |
3 ms |
492 KB |
Output is correct |
| 81 |
Correct |
5 ms |
492 KB |
Output is correct |
| 82 |
Correct |
4 ms |
492 KB |
Output is correct |
| 83 |
Correct |
4 ms |
492 KB |
Output is correct |
| 84 |
Correct |
4 ms |
492 KB |
Output is correct |
| 85 |
Correct |
4 ms |
492 KB |
Output is correct |
| 86 |
Correct |
4 ms |
492 KB |
Output is correct |
| 87 |
Correct |
12 ms |
748 KB |
Output is correct |
| 88 |
Correct |
38 ms |
1644 KB |
Output is correct |
| 89 |
Correct |
156 ms |
4736 KB |
Output is correct |
| 90 |
Correct |
159 ms |
4716 KB |
Output is correct |
| 91 |
Correct |
168 ms |
4716 KB |
Output is correct |
| 92 |
Correct |
81 ms |
4716 KB |
Output is correct |
| 93 |
Correct |
65 ms |
4716 KB |
Output is correct |
| 94 |
Correct |
66 ms |
4716 KB |
Output is correct |
| 95 |
Correct |
72 ms |
5224 KB |
Output is correct |
| 96 |
Correct |
96 ms |
5608 KB |
Output is correct |
| 97 |
Correct |
81 ms |
5608 KB |
Output is correct |
| 98 |
Correct |
84 ms |
5608 KB |
Output is correct |
| 99 |
Correct |
86 ms |
4972 KB |
Output is correct |
| 100 |
Correct |
209 ms |
4460 KB |
Output is correct |
| 101 |
Correct |
275 ms |
4716 KB |
Output is correct |
| 102 |
Correct |
242 ms |
4868 KB |
Output is correct |
| 103 |
Correct |
242 ms |
4844 KB |
Output is correct |
| 104 |
Correct |
143 ms |
5100 KB |
Output is correct |
| 105 |
Correct |
157 ms |
5104 KB |
Output is correct |
| 106 |
Correct |
147 ms |
5228 KB |
Output is correct |
| 107 |
Correct |
166 ms |
3948 KB |
Output is correct |
| 108 |
Correct |
171 ms |
4204 KB |
Output is correct |
| 109 |
Correct |
168 ms |
4332 KB |
Output is correct |
| 110 |
Correct |
65 ms |
4076 KB |
Output is correct |
| 111 |
Correct |
68 ms |
5224 KB |
Output is correct |
| 112 |
Correct |
83 ms |
5096 KB |
Output is correct |
| 113 |
Correct |
92 ms |
4356 KB |
Output is correct |
| 114 |
Correct |
203 ms |
4460 KB |
Output is correct |
| 115 |
Correct |
231 ms |
4240 KB |
Output is correct |
| 116 |
Correct |
143 ms |
4332 KB |
Output is correct |
| 117 |
Correct |
87 ms |
4588 KB |
Output is correct |
| 118 |
Correct |
89 ms |
4588 KB |
Output is correct |
| 119 |
Correct |
91 ms |
4588 KB |
Output is correct |
| 120 |
Correct |
76 ms |
4204 KB |
Output is correct |
| 121 |
Correct |
104 ms |
4204 KB |
Output is correct |
| 122 |
Correct |
78 ms |
4204 KB |
Output is correct |
| 123 |
Correct |
141 ms |
4588 KB |
Output is correct |
| 124 |
Correct |
149 ms |
4716 KB |
Output is correct |
| 125 |
Correct |
142 ms |
4588 KB |
Output is correct |
| 126 |
Correct |
143 ms |
4332 KB |
Output is correct |
| 127 |
Correct |
137 ms |
4204 KB |
Output is correct |
| 128 |
Correct |
142 ms |
4204 KB |
Output is correct |
