#include <bits/stdc++.h>
using namespace std;
long long depth[100005], par[100005], ind[100005];
vector<pair<long long, long long> > adj[100005];
vector<long long> vec[100005], res;
void dfs(long long u, long long p)
{
par[u]=p;
for (long long i=0; i<adj[u].size(); i++)
{
long long v=adj[u][i].first, w=adj[u][i].second;
if (v==p)
continue;
depth[v]=depth[u]+1;
ind[v]=w;
dfs(v, u);
}
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
long long n, m, q;
cin >> n >> m >> q;
for (long long i=1; i<n; i++)
{
long long u, v;
cin >> u >> v;
adj[u].push_back({v, i});
adj[v].push_back({u, i});
}
for (long long i=1; i<=m; i++)
{
long long x, y;
cin >> x >> y;
vec[x].push_back(y);
}
dfs(1, 1);
for (long long i=1; i<=q; i++)
{
long long a, b, c, d, curA, curB, sum=0;
cin >> a >> b >> c >> d;
if (depth[a]<depth[b])
swap(a, b);
res.clear();
curA=a, curB=b;
for (long long j=1; j<=depth[a]-depth[b]; j++)
{
for (long long k=0; k<vec[ind[curA]].size(); k++)
res.push_back(vec[ind[curA]][k]);
curA=par[curA];
}
while (curA!=curB)
{
for (long long k=0; k<vec[ind[curA]].size(); k++)
res.push_back(vec[ind[curA]][k]);
curA=par[curA];
for (long long k=0; k<vec[ind[curB]].size(); k++)
res.push_back(vec[ind[curB]][k]);
curB=par[curB];
}
sort(res.begin(), res.end());
for (long long j=0; j<=res.size(); j++)
{
if (j<res.size() && sum+res[j]<=d)
sum+=res[j];
else
{
cout << max(-1LL, c-((long long)res.size()-j)) << '\n';
break;
}
}
}
}
Compilation message
currencies.cpp: In function 'void dfs(long long int, long long int)':
currencies.cpp:9:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | for (long long i=0; i<adj[u].size(); i++)
| ~^~~~~~~~~~~~~~
currencies.cpp: In function 'int main()':
currencies.cpp:50:34: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
50 | for (long long k=0; k<vec[ind[curA]].size(); k++)
| ~^~~~~~~~~~~~~~~~~~~~~~
currencies.cpp:56:34: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
56 | for (long long k=0; k<vec[ind[curA]].size(); k++)
| ~^~~~~~~~~~~~~~~~~~~~~~
currencies.cpp:59:34: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
59 | for (long long k=0; k<vec[ind[curB]].size(); k++)
| ~^~~~~~~~~~~~~~~~~~~~~~
currencies.cpp:64:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
64 | for (long long j=0; j<=res.size(); j++)
| ~^~~~~~~~~~~~
currencies.cpp:66:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
66 | if (j<res.size() && sum+res[j]<=d)
| ~^~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4948 KB |
Output is correct |
2 |
Correct |
2 ms |
5028 KB |
Output is correct |
3 |
Correct |
2 ms |
5028 KB |
Output is correct |
4 |
Correct |
3 ms |
4948 KB |
Output is correct |
5 |
Correct |
4 ms |
5204 KB |
Output is correct |
6 |
Correct |
4 ms |
5204 KB |
Output is correct |
7 |
Correct |
4 ms |
5164 KB |
Output is correct |
8 |
Correct |
4 ms |
5204 KB |
Output is correct |
9 |
Correct |
5 ms |
5204 KB |
Output is correct |
10 |
Correct |
5 ms |
5296 KB |
Output is correct |
11 |
Correct |
5 ms |
5296 KB |
Output is correct |
12 |
Correct |
5 ms |
5208 KB |
Output is correct |
13 |
Correct |
66 ms |
5332 KB |
Output is correct |
14 |
Correct |
67 ms |
5408 KB |
Output is correct |
15 |
Correct |
29 ms |
5380 KB |
Output is correct |
16 |
Correct |
21 ms |
5332 KB |
Output is correct |
17 |
Correct |
18 ms |
5332 KB |
Output is correct |
18 |
Correct |
29 ms |
5368 KB |
Output is correct |
19 |
Correct |
4 ms |
5204 KB |
Output is correct |
20 |
Correct |
4 ms |
5304 KB |
Output is correct |
21 |
Correct |
5 ms |
5284 KB |
Output is correct |
22 |
Correct |
4 ms |
5300 KB |
Output is correct |
23 |
Correct |
44 ms |
5320 KB |
Output is correct |
24 |
Correct |
41 ms |
5320 KB |
Output is correct |
25 |
Correct |
41 ms |
5328 KB |
Output is correct |
26 |
Correct |
5 ms |
5300 KB |
Output is correct |
27 |
Correct |
4 ms |
5296 KB |
Output is correct |
28 |
Correct |
4 ms |
5296 KB |
Output is correct |
29 |
Correct |
4 ms |
5204 KB |
Output is correct |
30 |
Correct |
5 ms |
5204 KB |
Output is correct |
31 |
Correct |
4 ms |
5204 KB |
Output is correct |
32 |
Correct |
5 ms |
5296 KB |
Output is correct |
33 |
Correct |
62 ms |
5456 KB |
Output is correct |
34 |
Correct |
63 ms |
5460 KB |
Output is correct |
35 |
Correct |
63 ms |
5472 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
5032 KB |
Output is correct |
2 |
Correct |
4 ms |
5204 KB |
Output is correct |
3 |
Correct |
4 ms |
5204 KB |
Output is correct |
4 |
Correct |
4 ms |
5320 KB |
Output is correct |
5 |
Correct |
104 ms |
15168 KB |
Output is correct |
6 |
Correct |
136 ms |
12536 KB |
Output is correct |
7 |
Correct |
118 ms |
13520 KB |
Output is correct |
8 |
Correct |
99 ms |
13832 KB |
Output is correct |
9 |
Correct |
107 ms |
13764 KB |
Output is correct |
10 |
Correct |
141 ms |
15300 KB |
Output is correct |
11 |
Correct |
171 ms |
15376 KB |
Output is correct |
12 |
Correct |
181 ms |
15300 KB |
Output is correct |
13 |
Correct |
148 ms |
15392 KB |
Output is correct |
14 |
Correct |
138 ms |
15292 KB |
Output is correct |
15 |
Execution timed out |
5020 ms |
21780 KB |
Time limit exceeded |
16 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
4948 KB |
Output is correct |
2 |
Correct |
63 ms |
5468 KB |
Output is correct |
3 |
Correct |
65 ms |
5472 KB |
Output is correct |
4 |
Correct |
64 ms |
5468 KB |
Output is correct |
5 |
Execution timed out |
5045 ms |
20968 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4948 KB |
Output is correct |
2 |
Correct |
2 ms |
5028 KB |
Output is correct |
3 |
Correct |
2 ms |
5028 KB |
Output is correct |
4 |
Correct |
3 ms |
4948 KB |
Output is correct |
5 |
Correct |
4 ms |
5204 KB |
Output is correct |
6 |
Correct |
4 ms |
5204 KB |
Output is correct |
7 |
Correct |
4 ms |
5164 KB |
Output is correct |
8 |
Correct |
4 ms |
5204 KB |
Output is correct |
9 |
Correct |
5 ms |
5204 KB |
Output is correct |
10 |
Correct |
5 ms |
5296 KB |
Output is correct |
11 |
Correct |
5 ms |
5296 KB |
Output is correct |
12 |
Correct |
5 ms |
5208 KB |
Output is correct |
13 |
Correct |
66 ms |
5332 KB |
Output is correct |
14 |
Correct |
67 ms |
5408 KB |
Output is correct |
15 |
Correct |
29 ms |
5380 KB |
Output is correct |
16 |
Correct |
21 ms |
5332 KB |
Output is correct |
17 |
Correct |
18 ms |
5332 KB |
Output is correct |
18 |
Correct |
29 ms |
5368 KB |
Output is correct |
19 |
Correct |
4 ms |
5204 KB |
Output is correct |
20 |
Correct |
4 ms |
5304 KB |
Output is correct |
21 |
Correct |
5 ms |
5284 KB |
Output is correct |
22 |
Correct |
4 ms |
5300 KB |
Output is correct |
23 |
Correct |
44 ms |
5320 KB |
Output is correct |
24 |
Correct |
41 ms |
5320 KB |
Output is correct |
25 |
Correct |
41 ms |
5328 KB |
Output is correct |
26 |
Correct |
5 ms |
5300 KB |
Output is correct |
27 |
Correct |
4 ms |
5296 KB |
Output is correct |
28 |
Correct |
4 ms |
5296 KB |
Output is correct |
29 |
Correct |
4 ms |
5204 KB |
Output is correct |
30 |
Correct |
5 ms |
5204 KB |
Output is correct |
31 |
Correct |
4 ms |
5204 KB |
Output is correct |
32 |
Correct |
5 ms |
5296 KB |
Output is correct |
33 |
Correct |
62 ms |
5456 KB |
Output is correct |
34 |
Correct |
63 ms |
5460 KB |
Output is correct |
35 |
Correct |
63 ms |
5472 KB |
Output is correct |
36 |
Correct |
2 ms |
5032 KB |
Output is correct |
37 |
Correct |
4 ms |
5204 KB |
Output is correct |
38 |
Correct |
4 ms |
5204 KB |
Output is correct |
39 |
Correct |
4 ms |
5320 KB |
Output is correct |
40 |
Correct |
104 ms |
15168 KB |
Output is correct |
41 |
Correct |
136 ms |
12536 KB |
Output is correct |
42 |
Correct |
118 ms |
13520 KB |
Output is correct |
43 |
Correct |
99 ms |
13832 KB |
Output is correct |
44 |
Correct |
107 ms |
13764 KB |
Output is correct |
45 |
Correct |
141 ms |
15300 KB |
Output is correct |
46 |
Correct |
171 ms |
15376 KB |
Output is correct |
47 |
Correct |
181 ms |
15300 KB |
Output is correct |
48 |
Correct |
148 ms |
15392 KB |
Output is correct |
49 |
Correct |
138 ms |
15292 KB |
Output is correct |
50 |
Execution timed out |
5020 ms |
21780 KB |
Time limit exceeded |
51 |
Halted |
0 ms |
0 KB |
- |