#include "bits/stdc++.h"
#define int long long
using namespace std;
#ifdef Nero
#include "Deb.h"
#else
#define deb(...)
#endif
struct queries {
int u, v, l, gold, silver;
};
const int Log = 18;
const int N = 100005;
int n, m, q;
vector<int> g[N];
pair<int,int> e[N];
pair<int,int> ch[N];
int idd;
int up[Log][N];
int in[N], out[N], dep[N];
void Dfs (int v, int p) {
in[v] = ++idd;
for (int u : g[v]) {
if (u == p) continue;
dep[u] = dep[v] + 1;
up[0][u] = v;
for (int i = 1; i < Log; ++i) {
up[i][u] = up[i - 1][up[i - 1][u]];
}
Dfs(u, v);
}
out[v] = idd;
}
int Lca (int u, int v) {
if (dep[u] < dep[v]) swap(u, v);
for (int i = 0; i < Log; ++i) {
if ((dep[u] - dep[v]) >> i & 1) {
u = up[i][u];
}
}
if (u == v) {
return u;
}
for (int i = Log - 1; i >= 0; --i) {
if (up[i][u] != up[i][v]) {
u = up[i][u], v = up[i][v];
}
}
return up[0][u];
}
int tree[N];
void upd (int id, int v) {
while (id < N) {
tree[id] += v;
id += id & -id;
}
}
void upd (int l, int r, int v) {
upd(l, v);
upd(r + 1, -v);
}
int qry (int id) {
int ret = 0;
while (id) {
ret += tree[id];
id -= id & -id;
}
return ret;
}
int getSum (int u, int v, int l) {
return qry(in[u]) + qry(in[v]) - 2 * qry(in[l]);
}
void addEdge (int i, bool weighted) {
int u = e[ch[i].first].first, v = e[ch[i].first].second;
if (dep[u] < dep[v]) swap(u, v);
if (weighted) {
upd(in[u], out[u], ch[i].second);
} else {
upd(in[u], out[u], 1);
}
}
int ans[N];
int L[N], R[N];
pair<int,int> Mid[N];
signed main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> m >> q;
for (int i = 0; i < n - 1; ++i) {
int u, v;
cin >> u >> v;
g[u].push_back(v);
g[v].push_back(u);
e[i] = {u, v};
}
Dfs(1, 1);
for (int i = 0; i < m; ++i) {
int p, c;
cin >> p >> c;
ch[i] = {p - 1, c};
addEdge(i, 0);
}
vector<queries> qs(q);
for (int i = 0; i < q; ++i) {
int u, v, gold, silver;
cin >> u >> v >> gold >> silver;
qs[i] = {u, v, Lca(u, v), gold, silver};
ans[i] = getSum(u, v, qs[i].l);
}
sort(ch, ch + m, [&](pair<int,int>& a, pair<int,int>& b) {
return a.second < b.second;
});
for (int i = 0; i < q; ++i) {
L[i] = -1, R[i] = m - 1;
}
while (true) {
memset(tree, 0, sizeof tree);
bool changed = false;
for (int i = 0; i < q; ++i) {
if (L[i] != R[i]) {
Mid[i] = make_pair((L[i] + R[i] + 1) >> 1, i);
changed = true;
} else {
Mid[i] = make_pair(L[i], i);
}
}
sort(Mid, Mid + q);
int p = 0;
if (!changed) {
for (int i = 0; i < q; ++i) {
while (p <= Mid[i].first) {
addEdge(p, 0);
p++;
}
ans[Mid[i].second] = qs[Mid[i].second].gold - (ans[Mid[i].second] - getSum(qs[Mid[i].second].u, qs[Mid[i].second].v, qs[Mid[i].second].l));
}
break;
}
for (int i = 0; i < q; ++i) {
while (p <= Mid[i].first) {
addEdge(p, 1);
p++;
}
int id = Mid[i].second;
if (getSum(qs[id].u, qs[id].v, qs[id].l) <= qs[id].silver) {
L[id] = Mid[i].first;
} else {
R[id] = Mid[i].first - 1;
}
}
}
for (int i = 0; i < q; ++i) {
cout << max(-1LL, ans[i]) << '\n';
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3540 KB |
Output is correct |
2 |
Correct |
2 ms |
3540 KB |
Output is correct |
3 |
Correct |
2 ms |
3540 KB |
Output is correct |
4 |
Correct |
2 ms |
3540 KB |
Output is correct |
5 |
Correct |
6 ms |
4052 KB |
Output is correct |
6 |
Correct |
8 ms |
4156 KB |
Output is correct |
7 |
Correct |
8 ms |
4052 KB |
Output is correct |
8 |
Correct |
10 ms |
4180 KB |
Output is correct |
9 |
Correct |
10 ms |
4180 KB |
Output is correct |
10 |
Correct |
8 ms |
4180 KB |
Output is correct |
11 |
Correct |
10 ms |
4180 KB |
Output is correct |
12 |
Correct |
12 ms |
4232 KB |
Output is correct |
13 |
Correct |
9 ms |
4300 KB |
Output is correct |
14 |
Correct |
13 ms |
4180 KB |
Output is correct |
15 |
Correct |
9 ms |
4180 KB |
Output is correct |
16 |
Correct |
9 ms |
4180 KB |
Output is correct |
17 |
Correct |
9 ms |
4180 KB |
Output is correct |
18 |
Correct |
10 ms |
4248 KB |
Output is correct |
19 |
Correct |
11 ms |
4180 KB |
Output is correct |
20 |
Correct |
9 ms |
4180 KB |
Output is correct |
21 |
Correct |
11 ms |
4180 KB |
Output is correct |
22 |
Correct |
8 ms |
4180 KB |
Output is correct |
23 |
Correct |
9 ms |
4236 KB |
Output is correct |
24 |
Correct |
8 ms |
4180 KB |
Output is correct |
25 |
Correct |
9 ms |
4180 KB |
Output is correct |
26 |
Correct |
9 ms |
4180 KB |
Output is correct |
27 |
Correct |
8 ms |
4228 KB |
Output is correct |
28 |
Correct |
9 ms |
4180 KB |
Output is correct |
29 |
Correct |
10 ms |
4180 KB |
Output is correct |
30 |
Correct |
10 ms |
4232 KB |
Output is correct |
31 |
Correct |
10 ms |
4180 KB |
Output is correct |
32 |
Correct |
12 ms |
4180 KB |
Output is correct |
33 |
Correct |
9 ms |
4308 KB |
Output is correct |
34 |
Correct |
13 ms |
4280 KB |
Output is correct |
35 |
Correct |
10 ms |
4288 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
3540 KB |
Output is correct |
2 |
Correct |
11 ms |
4232 KB |
Output is correct |
3 |
Correct |
10 ms |
4228 KB |
Output is correct |
4 |
Correct |
12 ms |
4236 KB |
Output is correct |
5 |
Correct |
946 ms |
31644 KB |
Output is correct |
6 |
Correct |
879 ms |
27248 KB |
Output is correct |
7 |
Correct |
970 ms |
29944 KB |
Output is correct |
8 |
Correct |
741 ms |
28824 KB |
Output is correct |
9 |
Correct |
626 ms |
28364 KB |
Output is correct |
10 |
Correct |
1061 ms |
34836 KB |
Output is correct |
11 |
Correct |
1126 ms |
34836 KB |
Output is correct |
12 |
Correct |
1124 ms |
34832 KB |
Output is correct |
13 |
Correct |
1164 ms |
34772 KB |
Output is correct |
14 |
Correct |
975 ms |
34844 KB |
Output is correct |
15 |
Correct |
1042 ms |
40080 KB |
Output is correct |
16 |
Correct |
951 ms |
40544 KB |
Output is correct |
17 |
Correct |
950 ms |
39800 KB |
Output is correct |
18 |
Correct |
1063 ms |
34388 KB |
Output is correct |
19 |
Correct |
1233 ms |
34468 KB |
Output is correct |
20 |
Correct |
1109 ms |
34508 KB |
Output is correct |
21 |
Correct |
1026 ms |
34896 KB |
Output is correct |
22 |
Correct |
1008 ms |
34964 KB |
Output is correct |
23 |
Correct |
918 ms |
34988 KB |
Output is correct |
24 |
Correct |
988 ms |
34892 KB |
Output is correct |
25 |
Correct |
816 ms |
34972 KB |
Output is correct |
26 |
Correct |
822 ms |
34892 KB |
Output is correct |
27 |
Correct |
777 ms |
34920 KB |
Output is correct |
28 |
Correct |
794 ms |
34836 KB |
Output is correct |
29 |
Correct |
668 ms |
34804 KB |
Output is correct |
30 |
Correct |
714 ms |
34868 KB |
Output is correct |
31 |
Correct |
725 ms |
34860 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3540 KB |
Output is correct |
2 |
Correct |
9 ms |
4260 KB |
Output is correct |
3 |
Correct |
8 ms |
4344 KB |
Output is correct |
4 |
Correct |
9 ms |
4308 KB |
Output is correct |
5 |
Correct |
545 ms |
36196 KB |
Output is correct |
6 |
Correct |
478 ms |
35536 KB |
Output is correct |
7 |
Correct |
553 ms |
27264 KB |
Output is correct |
8 |
Correct |
816 ms |
40696 KB |
Output is correct |
9 |
Correct |
884 ms |
40692 KB |
Output is correct |
10 |
Correct |
905 ms |
40640 KB |
Output is correct |
11 |
Correct |
728 ms |
40620 KB |
Output is correct |
12 |
Correct |
746 ms |
40616 KB |
Output is correct |
13 |
Correct |
731 ms |
40612 KB |
Output is correct |
14 |
Correct |
750 ms |
40744 KB |
Output is correct |
15 |
Correct |
768 ms |
40608 KB |
Output is correct |
16 |
Correct |
752 ms |
40624 KB |
Output is correct |
17 |
Correct |
799 ms |
40616 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3540 KB |
Output is correct |
2 |
Correct |
2 ms |
3540 KB |
Output is correct |
3 |
Correct |
2 ms |
3540 KB |
Output is correct |
4 |
Correct |
2 ms |
3540 KB |
Output is correct |
5 |
Correct |
6 ms |
4052 KB |
Output is correct |
6 |
Correct |
8 ms |
4156 KB |
Output is correct |
7 |
Correct |
8 ms |
4052 KB |
Output is correct |
8 |
Correct |
10 ms |
4180 KB |
Output is correct |
9 |
Correct |
10 ms |
4180 KB |
Output is correct |
10 |
Correct |
8 ms |
4180 KB |
Output is correct |
11 |
Correct |
10 ms |
4180 KB |
Output is correct |
12 |
Correct |
12 ms |
4232 KB |
Output is correct |
13 |
Correct |
9 ms |
4300 KB |
Output is correct |
14 |
Correct |
13 ms |
4180 KB |
Output is correct |
15 |
Correct |
9 ms |
4180 KB |
Output is correct |
16 |
Correct |
9 ms |
4180 KB |
Output is correct |
17 |
Correct |
9 ms |
4180 KB |
Output is correct |
18 |
Correct |
10 ms |
4248 KB |
Output is correct |
19 |
Correct |
11 ms |
4180 KB |
Output is correct |
20 |
Correct |
9 ms |
4180 KB |
Output is correct |
21 |
Correct |
11 ms |
4180 KB |
Output is correct |
22 |
Correct |
8 ms |
4180 KB |
Output is correct |
23 |
Correct |
9 ms |
4236 KB |
Output is correct |
24 |
Correct |
8 ms |
4180 KB |
Output is correct |
25 |
Correct |
9 ms |
4180 KB |
Output is correct |
26 |
Correct |
9 ms |
4180 KB |
Output is correct |
27 |
Correct |
8 ms |
4228 KB |
Output is correct |
28 |
Correct |
9 ms |
4180 KB |
Output is correct |
29 |
Correct |
10 ms |
4180 KB |
Output is correct |
30 |
Correct |
10 ms |
4232 KB |
Output is correct |
31 |
Correct |
10 ms |
4180 KB |
Output is correct |
32 |
Correct |
12 ms |
4180 KB |
Output is correct |
33 |
Correct |
9 ms |
4308 KB |
Output is correct |
34 |
Correct |
13 ms |
4280 KB |
Output is correct |
35 |
Correct |
10 ms |
4288 KB |
Output is correct |
36 |
Correct |
3 ms |
3540 KB |
Output is correct |
37 |
Correct |
11 ms |
4232 KB |
Output is correct |
38 |
Correct |
10 ms |
4228 KB |
Output is correct |
39 |
Correct |
12 ms |
4236 KB |
Output is correct |
40 |
Correct |
946 ms |
31644 KB |
Output is correct |
41 |
Correct |
879 ms |
27248 KB |
Output is correct |
42 |
Correct |
970 ms |
29944 KB |
Output is correct |
43 |
Correct |
741 ms |
28824 KB |
Output is correct |
44 |
Correct |
626 ms |
28364 KB |
Output is correct |
45 |
Correct |
1061 ms |
34836 KB |
Output is correct |
46 |
Correct |
1126 ms |
34836 KB |
Output is correct |
47 |
Correct |
1124 ms |
34832 KB |
Output is correct |
48 |
Correct |
1164 ms |
34772 KB |
Output is correct |
49 |
Correct |
975 ms |
34844 KB |
Output is correct |
50 |
Correct |
1042 ms |
40080 KB |
Output is correct |
51 |
Correct |
951 ms |
40544 KB |
Output is correct |
52 |
Correct |
950 ms |
39800 KB |
Output is correct |
53 |
Correct |
1063 ms |
34388 KB |
Output is correct |
54 |
Correct |
1233 ms |
34468 KB |
Output is correct |
55 |
Correct |
1109 ms |
34508 KB |
Output is correct |
56 |
Correct |
1026 ms |
34896 KB |
Output is correct |
57 |
Correct |
1008 ms |
34964 KB |
Output is correct |
58 |
Correct |
918 ms |
34988 KB |
Output is correct |
59 |
Correct |
988 ms |
34892 KB |
Output is correct |
60 |
Correct |
816 ms |
34972 KB |
Output is correct |
61 |
Correct |
822 ms |
34892 KB |
Output is correct |
62 |
Correct |
777 ms |
34920 KB |
Output is correct |
63 |
Correct |
794 ms |
34836 KB |
Output is correct |
64 |
Correct |
668 ms |
34804 KB |
Output is correct |
65 |
Correct |
714 ms |
34868 KB |
Output is correct |
66 |
Correct |
725 ms |
34860 KB |
Output is correct |
67 |
Correct |
2 ms |
3540 KB |
Output is correct |
68 |
Correct |
9 ms |
4260 KB |
Output is correct |
69 |
Correct |
8 ms |
4344 KB |
Output is correct |
70 |
Correct |
9 ms |
4308 KB |
Output is correct |
71 |
Correct |
545 ms |
36196 KB |
Output is correct |
72 |
Correct |
478 ms |
35536 KB |
Output is correct |
73 |
Correct |
553 ms |
27264 KB |
Output is correct |
74 |
Correct |
816 ms |
40696 KB |
Output is correct |
75 |
Correct |
884 ms |
40692 KB |
Output is correct |
76 |
Correct |
905 ms |
40640 KB |
Output is correct |
77 |
Correct |
728 ms |
40620 KB |
Output is correct |
78 |
Correct |
746 ms |
40616 KB |
Output is correct |
79 |
Correct |
731 ms |
40612 KB |
Output is correct |
80 |
Correct |
750 ms |
40744 KB |
Output is correct |
81 |
Correct |
768 ms |
40608 KB |
Output is correct |
82 |
Correct |
752 ms |
40624 KB |
Output is correct |
83 |
Correct |
799 ms |
40616 KB |
Output is correct |
84 |
Correct |
661 ms |
28360 KB |
Output is correct |
85 |
Correct |
655 ms |
22820 KB |
Output is correct |
86 |
Correct |
571 ms |
22496 KB |
Output is correct |
87 |
Correct |
939 ms |
34884 KB |
Output is correct |
88 |
Correct |
1018 ms |
34880 KB |
Output is correct |
89 |
Correct |
1010 ms |
34844 KB |
Output is correct |
90 |
Correct |
1055 ms |
34844 KB |
Output is correct |
91 |
Correct |
1060 ms |
34956 KB |
Output is correct |
92 |
Correct |
989 ms |
38272 KB |
Output is correct |
93 |
Correct |
973 ms |
39648 KB |
Output is correct |
94 |
Correct |
1158 ms |
34584 KB |
Output is correct |
95 |
Correct |
1182 ms |
34528 KB |
Output is correct |
96 |
Correct |
1208 ms |
34516 KB |
Output is correct |
97 |
Correct |
1012 ms |
34604 KB |
Output is correct |
98 |
Correct |
965 ms |
34888 KB |
Output is correct |
99 |
Correct |
950 ms |
34940 KB |
Output is correct |
100 |
Correct |
937 ms |
34936 KB |
Output is correct |
101 |
Correct |
1039 ms |
34920 KB |
Output is correct |
102 |
Correct |
892 ms |
34896 KB |
Output is correct |
103 |
Correct |
889 ms |
34844 KB |
Output is correct |
104 |
Correct |
858 ms |
34840 KB |
Output is correct |
105 |
Correct |
727 ms |
34836 KB |
Output is correct |
106 |
Correct |
770 ms |
34848 KB |
Output is correct |
107 |
Correct |
831 ms |
34840 KB |
Output is correct |
108 |
Correct |
885 ms |
34844 KB |
Output is correct |