#ifdef Home
#define _GLIBCXX_DEBUG
#endif // Home
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
const int N = 100100;
const int LOGN = 17;
struct MyPQ{
priority_queue < int > pq;
ll sum = 0, y, c = 0;
MyPQ(ll y):y(y) {};
void add(ll x) {
pq.push(x);
sum += x;
for(; sum > y;) {
sum -= pq.top();
pq.pop();
++ c;
}
}
};
vector < pair < int, int > > adj[N];
vector < int > C[N];
ll n, m, q, cnt[N][LOGN], depth[N], up[N][LOGN], P_C[N], pr_c = -1;
void dfs1(int v, int p) {
depth[v] = depth[p] + 1;
up[v][0] = p;
for(int i = 1; i < LOGN; ++ i) {
cnt[v][i] = cnt[v][i - 1] + cnt[ up[v][i - 1] ][i - 1];
up[v][i] = up[ up[v][i - 1] ][i - 1];
}
for(auto &[u, w] : adj[v]) {
if(u != p) {
P_C[u] = w;
cnt[u][0] = C[w].size();
dfs1(u, v);
}
}
}
ll slow_LCA(ll a, ll b, ll &Y) {
if(depth[a] < depth[b]) {
swap(a, b);
}
MyPQ ans(Y);
for(; depth[a] > depth[b];) {
for(auto &i : C[P_C[a]]) {
ans.add(i);
}
a = up[a][0];
}
for(; a != b;) {
for(auto &i : C[P_C[a]]) {
ans.add(i);
}
for(auto &i : C[P_C[b]]) {
ans.add(i);
}
a = up[a][0];
b = up[b][0];
}
return ans.c;
}
ll fast_LCA(ll a, ll b) {
ll c = 0;
if(depth[a] < depth[b]) {
swap(a, b);
}
for(int t = LOGN; t --> 0;) {
if(depth[up[a][t]] >= depth[b]) {
c += cnt[a][t];
a = up[a][t];
}
}
if(a == b) {
return c;
}
for(int t = LOGN; t --> 0;) {
if(up[a][t] != up[b][t]) {
c += cnt[a][t];
c += cnt[b][t];
a = up[a][t];
b = up[b][t];
}
}
c += cnt[a][0];
c += cnt[b][0];
return c;
}
void solve_subtask_1() {
dfs1(1, 1);
ll s, t, X, Y, Z;
for(; q --> 0;) {
cin >> s >> t >> X >> Y;
Z = slow_LCA(s, t, Y);
cout << (X < Z ? -1 : X - Z) << '\n';
}
}
void solve_subtask_2() {
ll s, t, X, Y, Z;
dfs1(1, 1);
for(; q --> 0;) {
cin >> s >> t >> X >> Y;
Z = fast_LCA(s, t);
Z -= Y / pr_c;
cout << (X < Z ? -1 : X - max(0ll, Z)) << '\n';
}
}
main() {
#ifdef Home
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif // Home
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> n >> m >> q;
for(int u, v, i = 1; i < n; ++ i) {
cin >> u >> v;
adj[u].push_back({v, i});
adj[v].push_back({u, i});
}
bool subtsk2 = true;
for(int p, c; m --> 0;) {
cin >> p >> c;
if(pr_c != -1) {
subtsk2 &= pr_c == c;
}
C[p].push_back(c);
pr_c = c;
}
if(subtsk2) {
solve_subtask_2();
return 0;
}
if(n <= 2023 && q <= 2023) {
solve_subtask_1();
return 0;
}
}
Compilation message
currencies.cpp:125:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
125 | main() {
| ^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4948 KB |
Output is correct |
2 |
Correct |
2 ms |
4948 KB |
Output is correct |
3 |
Correct |
2 ms |
4948 KB |
Output is correct |
4 |
Correct |
2 ms |
5032 KB |
Output is correct |
5 |
Correct |
5 ms |
5680 KB |
Output is correct |
6 |
Correct |
7 ms |
5716 KB |
Output is correct |
7 |
Correct |
5 ms |
5556 KB |
Output is correct |
8 |
Correct |
5 ms |
5716 KB |
Output is correct |
9 |
Correct |
5 ms |
5832 KB |
Output is correct |
10 |
Correct |
5 ms |
5804 KB |
Output is correct |
11 |
Correct |
5 ms |
5716 KB |
Output is correct |
12 |
Correct |
5 ms |
5716 KB |
Output is correct |
13 |
Correct |
69 ms |
5924 KB |
Output is correct |
14 |
Correct |
69 ms |
5912 KB |
Output is correct |
15 |
Correct |
30 ms |
5852 KB |
Output is correct |
16 |
Correct |
24 ms |
5844 KB |
Output is correct |
17 |
Correct |
19 ms |
5804 KB |
Output is correct |
18 |
Correct |
31 ms |
5816 KB |
Output is correct |
19 |
Correct |
4 ms |
5716 KB |
Output is correct |
20 |
Correct |
6 ms |
5736 KB |
Output is correct |
21 |
Correct |
4 ms |
5716 KB |
Output is correct |
22 |
Correct |
4 ms |
5804 KB |
Output is correct |
23 |
Correct |
39 ms |
5716 KB |
Output is correct |
24 |
Correct |
37 ms |
5716 KB |
Output is correct |
25 |
Correct |
35 ms |
5716 KB |
Output is correct |
26 |
Correct |
5 ms |
5804 KB |
Output is correct |
27 |
Correct |
4 ms |
5716 KB |
Output is correct |
28 |
Correct |
4 ms |
5716 KB |
Output is correct |
29 |
Correct |
4 ms |
5716 KB |
Output is correct |
30 |
Correct |
4 ms |
5716 KB |
Output is correct |
31 |
Correct |
4 ms |
5704 KB |
Output is correct |
32 |
Correct |
4 ms |
5716 KB |
Output is correct |
33 |
Correct |
61 ms |
5944 KB |
Output is correct |
34 |
Correct |
65 ms |
6072 KB |
Output is correct |
35 |
Correct |
62 ms |
5960 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4948 KB |
Output is correct |
2 |
Correct |
4 ms |
5716 KB |
Output is correct |
3 |
Correct |
4 ms |
5796 KB |
Output is correct |
4 |
Correct |
5 ms |
5828 KB |
Output is correct |
5 |
Correct |
139 ms |
40276 KB |
Output is correct |
6 |
Correct |
136 ms |
30864 KB |
Output is correct |
7 |
Correct |
147 ms |
35660 KB |
Output is correct |
8 |
Correct |
123 ms |
37004 KB |
Output is correct |
9 |
Correct |
118 ms |
36940 KB |
Output is correct |
10 |
Correct |
180 ms |
42128 KB |
Output is correct |
11 |
Correct |
163 ms |
41956 KB |
Output is correct |
12 |
Correct |
161 ms |
41932 KB |
Output is correct |
13 |
Correct |
189 ms |
41900 KB |
Output is correct |
14 |
Correct |
157 ms |
41960 KB |
Output is correct |
15 |
Correct |
239 ms |
47240 KB |
Output is correct |
16 |
Correct |
230 ms |
47620 KB |
Output is correct |
17 |
Correct |
235 ms |
47036 KB |
Output is correct |
18 |
Correct |
206 ms |
41732 KB |
Output is correct |
19 |
Correct |
195 ms |
41600 KB |
Output is correct |
20 |
Correct |
193 ms |
41584 KB |
Output is correct |
21 |
Correct |
156 ms |
42100 KB |
Output is correct |
22 |
Correct |
134 ms |
42152 KB |
Output is correct |
23 |
Correct |
133 ms |
42084 KB |
Output is correct |
24 |
Correct |
138 ms |
42172 KB |
Output is correct |
25 |
Correct |
147 ms |
41520 KB |
Output is correct |
26 |
Correct |
151 ms |
41568 KB |
Output is correct |
27 |
Correct |
141 ms |
41548 KB |
Output is correct |
28 |
Correct |
130 ms |
41948 KB |
Output is correct |
29 |
Correct |
124 ms |
41916 KB |
Output is correct |
30 |
Correct |
131 ms |
42008 KB |
Output is correct |
31 |
Correct |
135 ms |
42152 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4948 KB |
Output is correct |
2 |
Correct |
61 ms |
5856 KB |
Output is correct |
3 |
Correct |
62 ms |
5860 KB |
Output is correct |
4 |
Correct |
63 ms |
5848 KB |
Output is correct |
5 |
Incorrect |
30 ms |
9416 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4948 KB |
Output is correct |
2 |
Correct |
2 ms |
4948 KB |
Output is correct |
3 |
Correct |
2 ms |
4948 KB |
Output is correct |
4 |
Correct |
2 ms |
5032 KB |
Output is correct |
5 |
Correct |
5 ms |
5680 KB |
Output is correct |
6 |
Correct |
7 ms |
5716 KB |
Output is correct |
7 |
Correct |
5 ms |
5556 KB |
Output is correct |
8 |
Correct |
5 ms |
5716 KB |
Output is correct |
9 |
Correct |
5 ms |
5832 KB |
Output is correct |
10 |
Correct |
5 ms |
5804 KB |
Output is correct |
11 |
Correct |
5 ms |
5716 KB |
Output is correct |
12 |
Correct |
5 ms |
5716 KB |
Output is correct |
13 |
Correct |
69 ms |
5924 KB |
Output is correct |
14 |
Correct |
69 ms |
5912 KB |
Output is correct |
15 |
Correct |
30 ms |
5852 KB |
Output is correct |
16 |
Correct |
24 ms |
5844 KB |
Output is correct |
17 |
Correct |
19 ms |
5804 KB |
Output is correct |
18 |
Correct |
31 ms |
5816 KB |
Output is correct |
19 |
Correct |
4 ms |
5716 KB |
Output is correct |
20 |
Correct |
6 ms |
5736 KB |
Output is correct |
21 |
Correct |
4 ms |
5716 KB |
Output is correct |
22 |
Correct |
4 ms |
5804 KB |
Output is correct |
23 |
Correct |
39 ms |
5716 KB |
Output is correct |
24 |
Correct |
37 ms |
5716 KB |
Output is correct |
25 |
Correct |
35 ms |
5716 KB |
Output is correct |
26 |
Correct |
5 ms |
5804 KB |
Output is correct |
27 |
Correct |
4 ms |
5716 KB |
Output is correct |
28 |
Correct |
4 ms |
5716 KB |
Output is correct |
29 |
Correct |
4 ms |
5716 KB |
Output is correct |
30 |
Correct |
4 ms |
5716 KB |
Output is correct |
31 |
Correct |
4 ms |
5704 KB |
Output is correct |
32 |
Correct |
4 ms |
5716 KB |
Output is correct |
33 |
Correct |
61 ms |
5944 KB |
Output is correct |
34 |
Correct |
65 ms |
6072 KB |
Output is correct |
35 |
Correct |
62 ms |
5960 KB |
Output is correct |
36 |
Correct |
2 ms |
4948 KB |
Output is correct |
37 |
Correct |
4 ms |
5716 KB |
Output is correct |
38 |
Correct |
4 ms |
5796 KB |
Output is correct |
39 |
Correct |
5 ms |
5828 KB |
Output is correct |
40 |
Correct |
139 ms |
40276 KB |
Output is correct |
41 |
Correct |
136 ms |
30864 KB |
Output is correct |
42 |
Correct |
147 ms |
35660 KB |
Output is correct |
43 |
Correct |
123 ms |
37004 KB |
Output is correct |
44 |
Correct |
118 ms |
36940 KB |
Output is correct |
45 |
Correct |
180 ms |
42128 KB |
Output is correct |
46 |
Correct |
163 ms |
41956 KB |
Output is correct |
47 |
Correct |
161 ms |
41932 KB |
Output is correct |
48 |
Correct |
189 ms |
41900 KB |
Output is correct |
49 |
Correct |
157 ms |
41960 KB |
Output is correct |
50 |
Correct |
239 ms |
47240 KB |
Output is correct |
51 |
Correct |
230 ms |
47620 KB |
Output is correct |
52 |
Correct |
235 ms |
47036 KB |
Output is correct |
53 |
Correct |
206 ms |
41732 KB |
Output is correct |
54 |
Correct |
195 ms |
41600 KB |
Output is correct |
55 |
Correct |
193 ms |
41584 KB |
Output is correct |
56 |
Correct |
156 ms |
42100 KB |
Output is correct |
57 |
Correct |
134 ms |
42152 KB |
Output is correct |
58 |
Correct |
133 ms |
42084 KB |
Output is correct |
59 |
Correct |
138 ms |
42172 KB |
Output is correct |
60 |
Correct |
147 ms |
41520 KB |
Output is correct |
61 |
Correct |
151 ms |
41568 KB |
Output is correct |
62 |
Correct |
141 ms |
41548 KB |
Output is correct |
63 |
Correct |
130 ms |
41948 KB |
Output is correct |
64 |
Correct |
124 ms |
41916 KB |
Output is correct |
65 |
Correct |
131 ms |
42008 KB |
Output is correct |
66 |
Correct |
135 ms |
42152 KB |
Output is correct |
67 |
Correct |
2 ms |
4948 KB |
Output is correct |
68 |
Correct |
61 ms |
5856 KB |
Output is correct |
69 |
Correct |
62 ms |
5860 KB |
Output is correct |
70 |
Correct |
63 ms |
5848 KB |
Output is correct |
71 |
Incorrect |
30 ms |
9416 KB |
Output isn't correct |
72 |
Halted |
0 ms |
0 KB |
- |