#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define eb emplace_back
using namespace std;
typedef long long ll;
const int maxn = 2e5 + 5;
class Edge
{
public:
int v, c, d;
Edge(int v, int c, int d):
v(v), c(c), d(d) {}
};
vector<Edge> adj[maxn];
int N, M, deg[maxn];
ll res[maxn], sum[maxn];
void prepare(int u, int p = -1)
{
for(auto v : adj[u]) if(v.v != p){
prepare(v.v, u);
sum[u] += v.c + sum[v.v];
}
}
void down(int u, int p, ll s)
{
res[1] = min(res[1], s);
for(auto v : adj[u]) if(v.v != p){
down(v.v, u, s - v.c + v.d);
}
}
signed main(void)
{
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
if(fopen("A.INP", "r")){
freopen("A.INP", "r", stdin);
freopen("A.OUT", "w", stdout);
}
cin >> N;
for(int i = 1; i < N; ++i){
int a, b, c, d;
cin >> a >> b >> c >> d;
adj[a].eb(b, c, d); adj[b].eb(a, d, c);
++deg[a]; ++deg[b];
}
res[1] = 1e18;
prepare(1); down(1, -1, sum[1]);
priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>>> pq;
for(int i = 1; i <= N; ++i){
if(adj[i].size() == 1) pq.push(mp(adj[i][0].d, i));
}
while(pq.size() > 2){
auto now = pq.top(); pq.pop();
int nxt = -1, cnt = 0;
for(auto v : adj[now.se]){
if(deg[v.v] > 1){
deg[v.v]--;
if(deg[v.v] == 1) nxt = v.v, ++cnt;
else res[pq.size()] = res[pq.size() + 1] + now.fi;
}
}
assert(cnt <= 1);
if(nxt != -1) for(auto v : adj[nxt]) if(deg[v.v] > 1)
pq.push(mp(now.fi + v.d, nxt));
}
int q; cin >> q;
while(q--){
int x; cin >> x;
cout << res[x] << '\n';
}
}
Compilation message
designated_cities.cpp: In function 'int main()':
designated_cities.cpp:45:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
freopen("A.INP", "r", stdin);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:46:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
freopen("A.OUT", "w", stdout);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
8 ms |
4984 KB |
Output is correct |
2 |
Correct |
7 ms |
4988 KB |
Output is correct |
3 |
Correct |
7 ms |
4984 KB |
Output is correct |
4 |
Correct |
7 ms |
4984 KB |
Output is correct |
5 |
Correct |
7 ms |
4984 KB |
Output is correct |
6 |
Correct |
7 ms |
4984 KB |
Output is correct |
7 |
Correct |
7 ms |
4984 KB |
Output is correct |
8 |
Correct |
7 ms |
4984 KB |
Output is correct |
9 |
Correct |
8 ms |
4984 KB |
Output is correct |
10 |
Correct |
7 ms |
5016 KB |
Output is correct |
11 |
Correct |
7 ms |
4984 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
4984 KB |
Output is correct |
2 |
Correct |
380 ms |
24244 KB |
Output is correct |
3 |
Correct |
300 ms |
32760 KB |
Output is correct |
4 |
Correct |
349 ms |
22768 KB |
Output is correct |
5 |
Correct |
357 ms |
24608 KB |
Output is correct |
6 |
Correct |
359 ms |
25960 KB |
Output is correct |
7 |
Correct |
328 ms |
25940 KB |
Output is correct |
8 |
Correct |
303 ms |
33780 KB |
Output is correct |
9 |
Correct |
251 ms |
27644 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
7 ms |
5112 KB |
Output is correct |
2 |
Correct |
357 ms |
24180 KB |
Output is correct |
3 |
Correct |
286 ms |
34936 KB |
Output is correct |
4 |
Correct |
354 ms |
22896 KB |
Output is correct |
5 |
Correct |
353 ms |
24608 KB |
Output is correct |
6 |
Correct |
363 ms |
26272 KB |
Output is correct |
7 |
Correct |
281 ms |
28500 KB |
Output is correct |
8 |
Correct |
324 ms |
31208 KB |
Output is correct |
9 |
Correct |
257 ms |
27284 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
8 ms |
4984 KB |
Output is correct |
2 |
Correct |
7 ms |
4988 KB |
Output is correct |
3 |
Correct |
7 ms |
4984 KB |
Output is correct |
4 |
Correct |
7 ms |
4984 KB |
Output is correct |
5 |
Correct |
7 ms |
4984 KB |
Output is correct |
6 |
Correct |
7 ms |
4984 KB |
Output is correct |
7 |
Correct |
7 ms |
4984 KB |
Output is correct |
8 |
Correct |
7 ms |
4984 KB |
Output is correct |
9 |
Correct |
8 ms |
4984 KB |
Output is correct |
10 |
Correct |
7 ms |
5016 KB |
Output is correct |
11 |
Correct |
7 ms |
4984 KB |
Output is correct |
12 |
Correct |
7 ms |
5112 KB |
Output is correct |
13 |
Correct |
9 ms |
5244 KB |
Output is correct |
14 |
Correct |
9 ms |
5236 KB |
Output is correct |
15 |
Correct |
10 ms |
5368 KB |
Output is correct |
16 |
Correct |
10 ms |
5240 KB |
Output is correct |
17 |
Correct |
9 ms |
5240 KB |
Output is correct |
18 |
Correct |
10 ms |
5240 KB |
Output is correct |
19 |
Correct |
9 ms |
5240 KB |
Output is correct |
20 |
Correct |
9 ms |
5240 KB |
Output is correct |
21 |
Correct |
10 ms |
5240 KB |
Output is correct |
22 |
Correct |
10 ms |
5368 KB |
Output is correct |
23 |
Correct |
10 ms |
5368 KB |
Output is correct |
24 |
Correct |
10 ms |
5368 KB |
Output is correct |
25 |
Correct |
10 ms |
5368 KB |
Output is correct |
26 |
Correct |
9 ms |
5368 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
4984 KB |
Output is correct |
2 |
Correct |
380 ms |
24244 KB |
Output is correct |
3 |
Correct |
300 ms |
32760 KB |
Output is correct |
4 |
Correct |
349 ms |
22768 KB |
Output is correct |
5 |
Correct |
357 ms |
24608 KB |
Output is correct |
6 |
Correct |
359 ms |
25960 KB |
Output is correct |
7 |
Correct |
328 ms |
25940 KB |
Output is correct |
8 |
Correct |
303 ms |
33780 KB |
Output is correct |
9 |
Correct |
251 ms |
27644 KB |
Output is correct |
10 |
Correct |
7 ms |
5112 KB |
Output is correct |
11 |
Correct |
357 ms |
24180 KB |
Output is correct |
12 |
Correct |
286 ms |
34936 KB |
Output is correct |
13 |
Correct |
354 ms |
22896 KB |
Output is correct |
14 |
Correct |
353 ms |
24608 KB |
Output is correct |
15 |
Correct |
363 ms |
26272 KB |
Output is correct |
16 |
Correct |
281 ms |
28500 KB |
Output is correct |
17 |
Correct |
324 ms |
31208 KB |
Output is correct |
18 |
Correct |
257 ms |
27284 KB |
Output is correct |
19 |
Correct |
8 ms |
4984 KB |
Output is correct |
20 |
Correct |
373 ms |
24304 KB |
Output is correct |
21 |
Correct |
312 ms |
35064 KB |
Output is correct |
22 |
Correct |
347 ms |
22896 KB |
Output is correct |
23 |
Correct |
350 ms |
24300 KB |
Output is correct |
24 |
Correct |
353 ms |
23272 KB |
Output is correct |
25 |
Correct |
351 ms |
24172 KB |
Output is correct |
26 |
Correct |
345 ms |
23276 KB |
Output is correct |
27 |
Correct |
353 ms |
24360 KB |
Output is correct |
28 |
Correct |
334 ms |
26008 KB |
Output is correct |
29 |
Correct |
362 ms |
24168 KB |
Output is correct |
30 |
Correct |
343 ms |
24108 KB |
Output is correct |
31 |
Correct |
329 ms |
27048 KB |
Output is correct |
32 |
Correct |
341 ms |
31600 KB |
Output is correct |
33 |
Correct |
250 ms |
27676 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
8 ms |
4984 KB |
Output is correct |
2 |
Correct |
7 ms |
4988 KB |
Output is correct |
3 |
Correct |
7 ms |
4984 KB |
Output is correct |
4 |
Correct |
7 ms |
4984 KB |
Output is correct |
5 |
Correct |
7 ms |
4984 KB |
Output is correct |
6 |
Correct |
7 ms |
4984 KB |
Output is correct |
7 |
Correct |
7 ms |
4984 KB |
Output is correct |
8 |
Correct |
7 ms |
4984 KB |
Output is correct |
9 |
Correct |
8 ms |
4984 KB |
Output is correct |
10 |
Correct |
7 ms |
5016 KB |
Output is correct |
11 |
Correct |
7 ms |
4984 KB |
Output is correct |
12 |
Correct |
9 ms |
4984 KB |
Output is correct |
13 |
Correct |
380 ms |
24244 KB |
Output is correct |
14 |
Correct |
300 ms |
32760 KB |
Output is correct |
15 |
Correct |
349 ms |
22768 KB |
Output is correct |
16 |
Correct |
357 ms |
24608 KB |
Output is correct |
17 |
Correct |
359 ms |
25960 KB |
Output is correct |
18 |
Correct |
328 ms |
25940 KB |
Output is correct |
19 |
Correct |
303 ms |
33780 KB |
Output is correct |
20 |
Correct |
251 ms |
27644 KB |
Output is correct |
21 |
Correct |
7 ms |
5112 KB |
Output is correct |
22 |
Correct |
357 ms |
24180 KB |
Output is correct |
23 |
Correct |
286 ms |
34936 KB |
Output is correct |
24 |
Correct |
354 ms |
22896 KB |
Output is correct |
25 |
Correct |
353 ms |
24608 KB |
Output is correct |
26 |
Correct |
363 ms |
26272 KB |
Output is correct |
27 |
Correct |
281 ms |
28500 KB |
Output is correct |
28 |
Correct |
324 ms |
31208 KB |
Output is correct |
29 |
Correct |
257 ms |
27284 KB |
Output is correct |
30 |
Correct |
7 ms |
5112 KB |
Output is correct |
31 |
Correct |
9 ms |
5244 KB |
Output is correct |
32 |
Correct |
9 ms |
5236 KB |
Output is correct |
33 |
Correct |
10 ms |
5368 KB |
Output is correct |
34 |
Correct |
10 ms |
5240 KB |
Output is correct |
35 |
Correct |
9 ms |
5240 KB |
Output is correct |
36 |
Correct |
10 ms |
5240 KB |
Output is correct |
37 |
Correct |
9 ms |
5240 KB |
Output is correct |
38 |
Correct |
9 ms |
5240 KB |
Output is correct |
39 |
Correct |
10 ms |
5240 KB |
Output is correct |
40 |
Correct |
10 ms |
5368 KB |
Output is correct |
41 |
Correct |
10 ms |
5368 KB |
Output is correct |
42 |
Correct |
10 ms |
5368 KB |
Output is correct |
43 |
Correct |
10 ms |
5368 KB |
Output is correct |
44 |
Correct |
9 ms |
5368 KB |
Output is correct |
45 |
Correct |
8 ms |
4984 KB |
Output is correct |
46 |
Correct |
373 ms |
24304 KB |
Output is correct |
47 |
Correct |
312 ms |
35064 KB |
Output is correct |
48 |
Correct |
347 ms |
22896 KB |
Output is correct |
49 |
Correct |
350 ms |
24300 KB |
Output is correct |
50 |
Correct |
353 ms |
23272 KB |
Output is correct |
51 |
Correct |
351 ms |
24172 KB |
Output is correct |
52 |
Correct |
345 ms |
23276 KB |
Output is correct |
53 |
Correct |
353 ms |
24360 KB |
Output is correct |
54 |
Correct |
334 ms |
26008 KB |
Output is correct |
55 |
Correct |
362 ms |
24168 KB |
Output is correct |
56 |
Correct |
343 ms |
24108 KB |
Output is correct |
57 |
Correct |
329 ms |
27048 KB |
Output is correct |
58 |
Correct |
341 ms |
31600 KB |
Output is correct |
59 |
Correct |
250 ms |
27676 KB |
Output is correct |
60 |
Correct |
8 ms |
4984 KB |
Output is correct |
61 |
Correct |
428 ms |
26852 KB |
Output is correct |
62 |
Correct |
352 ms |
34680 KB |
Output is correct |
63 |
Correct |
404 ms |
25452 KB |
Output is correct |
64 |
Correct |
415 ms |
26724 KB |
Output is correct |
65 |
Correct |
416 ms |
25316 KB |
Output is correct |
66 |
Correct |
401 ms |
26728 KB |
Output is correct |
67 |
Correct |
410 ms |
25448 KB |
Output is correct |
68 |
Correct |
416 ms |
27048 KB |
Output is correct |
69 |
Correct |
406 ms |
28192 KB |
Output is correct |
70 |
Correct |
421 ms |
26084 KB |
Output is correct |
71 |
Correct |
401 ms |
26868 KB |
Output is correct |
72 |
Correct |
365 ms |
29340 KB |
Output is correct |
73 |
Correct |
368 ms |
32616 KB |
Output is correct |
74 |
Correct |
307 ms |
31956 KB |
Output is correct |