#include <bits/stdc++.h>
#define ff first
#define ss second
#define sz size()
#define pb push_back
using namespace std;
typedef long long ll;
const int N = 2005;
// const int mod = 1e9+7;
// ll bigmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll n, m, q, l, r;
vector <ll> v[N], vv;
map <ll, bool> mm;
ll kak[N], san[N][N], p[N], c[N], s, t, gold, silver;
void dfs(int x, int par) {
kak[x] = par;
for (auto i : v[x]) {
if (i != par) {
dfs (i, x);
}
}
}
int main() {
// ios::sync_with_stdio(false);
// cin.tie(0), cout.tie(0);
// freopen("input.txt", "r", stdin);
// freopen("output.txt", "w", stdout);
// clock_t tStart = clock();
// printf("Time taken: %.2fs\n", (double)(clock() - tStart)/CLOCKS_PER_SEC);
cin >> n >> m >> q;
for (int i = 1; i < n; ++i) {
cin >> l >> r;
v[l].pb (r);
v[r].pb (l);
san[l][r] = i;
san[r][l] = i;
// dan[i].ff = l;
// dan[i].ss = r;
}
for (int i = 1; i <= m; ++i) {
cin >> p[i] >> c[i];
}
while ( q-- ) {
cin >> s >> t >> gold >> silver;
dfs (s, -1);
mm.clear();
vv.clear();
while (kak[t] != -1) {
mm[san[t][kak[t]]] = 1;
t = kak[t];
}
for (int i = 1; i <= m; ++i) {
if (mm[p[i]]) {
vv.pb (c[i]);
}
}
sort (vv.begin(), vv.end());
for (auto i : vv) {
if (silver >= i) {
silver -= i;
}
else {
gold--;
}
}
if (gold < 0) {
cout << "-1" << endl;
}
else cout << gold << endl;
}
}
/*
██╗░░██╗░█████╗░██╗░░░░░██╗░░░██╗███╗░░░███╗██████╗░░█████╗░░█████╗░███████╗
██║░░██║██╔══██╗██║░░░░░╚██╗░██╔╝████╗░████║╚════██╗██╔══██╗██╔══██╗╚════██║
███████║███████║██║░░░░░░╚████╔╝░██╔████╔██║░░███╔═╝██║░░██║██║░░██║░░░░██╔╝
██╔══██║██╔══██║██║░░░░░░░╚██╔╝░░██║╚██╔╝██║██╔══╝░░██║░░██║██║░░██║░░░██╔╝░
██║░░██║██║░░██║███████╗░░░██║░░░██║░╚═╝░██║███████╗╚█████╔╝╚█████╔╝░░██╔╝░░
╚═╝░░╚═╝╚═╝░░╚═╝╚══════╝░░░╚═╝░░░╚═╝░░░░░╚═╝╚══════╝░╚════╝░░╚════╝░░░╚═╝░░░
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
356 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
345 ms |
12200 KB |
Output is correct |
6 |
Correct |
476 ms |
13040 KB |
Output is correct |
7 |
Correct |
349 ms |
8092 KB |
Output is correct |
8 |
Correct |
547 ms |
13412 KB |
Output is correct |
9 |
Correct |
548 ms |
13396 KB |
Output is correct |
10 |
Correct |
558 ms |
13400 KB |
Output is correct |
11 |
Correct |
564 ms |
13336 KB |
Output is correct |
12 |
Correct |
549 ms |
13480 KB |
Output is correct |
13 |
Correct |
883 ms |
14616 KB |
Output is correct |
14 |
Correct |
876 ms |
14668 KB |
Output is correct |
15 |
Correct |
681 ms |
14632 KB |
Output is correct |
16 |
Correct |
703 ms |
14572 KB |
Output is correct |
17 |
Correct |
610 ms |
14420 KB |
Output is correct |
18 |
Correct |
716 ms |
14456 KB |
Output is correct |
19 |
Correct |
474 ms |
8704 KB |
Output is correct |
20 |
Correct |
479 ms |
8700 KB |
Output is correct |
21 |
Correct |
484 ms |
8660 KB |
Output is correct |
22 |
Correct |
474 ms |
8744 KB |
Output is correct |
23 |
Correct |
412 ms |
13320 KB |
Output is correct |
24 |
Correct |
404 ms |
13396 KB |
Output is correct |
25 |
Correct |
401 ms |
13480 KB |
Output is correct |
26 |
Correct |
477 ms |
13396 KB |
Output is correct |
27 |
Correct |
530 ms |
13516 KB |
Output is correct |
28 |
Correct |
507 ms |
13416 KB |
Output is correct |
29 |
Correct |
559 ms |
13216 KB |
Output is correct |
30 |
Correct |
593 ms |
13312 KB |
Output is correct |
31 |
Correct |
582 ms |
13524 KB |
Output is correct |
32 |
Correct |
594 ms |
13488 KB |
Output is correct |
33 |
Correct |
762 ms |
8820 KB |
Output is correct |
34 |
Correct |
679 ms |
8816 KB |
Output is correct |
35 |
Correct |
762 ms |
8820 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
641 ms |
13316 KB |
Output is correct |
3 |
Correct |
635 ms |
13524 KB |
Output is correct |
4 |
Correct |
612 ms |
13488 KB |
Output is correct |
5 |
Runtime error |
2 ms |
468 KB |
Execution killed with signal 11 |
6 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
728 ms |
8824 KB |
Output is correct |
3 |
Correct |
769 ms |
8828 KB |
Output is correct |
4 |
Correct |
708 ms |
8812 KB |
Output is correct |
5 |
Runtime error |
26 ms |
17124 KB |
Execution killed with signal 11 |
6 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
356 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
345 ms |
12200 KB |
Output is correct |
6 |
Correct |
476 ms |
13040 KB |
Output is correct |
7 |
Correct |
349 ms |
8092 KB |
Output is correct |
8 |
Correct |
547 ms |
13412 KB |
Output is correct |
9 |
Correct |
548 ms |
13396 KB |
Output is correct |
10 |
Correct |
558 ms |
13400 KB |
Output is correct |
11 |
Correct |
564 ms |
13336 KB |
Output is correct |
12 |
Correct |
549 ms |
13480 KB |
Output is correct |
13 |
Correct |
883 ms |
14616 KB |
Output is correct |
14 |
Correct |
876 ms |
14668 KB |
Output is correct |
15 |
Correct |
681 ms |
14632 KB |
Output is correct |
16 |
Correct |
703 ms |
14572 KB |
Output is correct |
17 |
Correct |
610 ms |
14420 KB |
Output is correct |
18 |
Correct |
716 ms |
14456 KB |
Output is correct |
19 |
Correct |
474 ms |
8704 KB |
Output is correct |
20 |
Correct |
479 ms |
8700 KB |
Output is correct |
21 |
Correct |
484 ms |
8660 KB |
Output is correct |
22 |
Correct |
474 ms |
8744 KB |
Output is correct |
23 |
Correct |
412 ms |
13320 KB |
Output is correct |
24 |
Correct |
404 ms |
13396 KB |
Output is correct |
25 |
Correct |
401 ms |
13480 KB |
Output is correct |
26 |
Correct |
477 ms |
13396 KB |
Output is correct |
27 |
Correct |
530 ms |
13516 KB |
Output is correct |
28 |
Correct |
507 ms |
13416 KB |
Output is correct |
29 |
Correct |
559 ms |
13216 KB |
Output is correct |
30 |
Correct |
593 ms |
13312 KB |
Output is correct |
31 |
Correct |
582 ms |
13524 KB |
Output is correct |
32 |
Correct |
594 ms |
13488 KB |
Output is correct |
33 |
Correct |
762 ms |
8820 KB |
Output is correct |
34 |
Correct |
679 ms |
8816 KB |
Output is correct |
35 |
Correct |
762 ms |
8820 KB |
Output is correct |
36 |
Correct |
1 ms |
340 KB |
Output is correct |
37 |
Correct |
641 ms |
13316 KB |
Output is correct |
38 |
Correct |
635 ms |
13524 KB |
Output is correct |
39 |
Correct |
612 ms |
13488 KB |
Output is correct |
40 |
Runtime error |
2 ms |
468 KB |
Execution killed with signal 11 |
41 |
Halted |
0 ms |
0 KB |
- |