#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int nx=5e5+5;
int n, m, h[nx], u, v, sz, res[nx], vs[nx], lvl[nx], f;
vector<pair<int, int>> d[nx];
void dfs(int u, int p, int idx)
{
vs[u]=1; lvl[u]=lvl[p]+1;
for (auto [v, id]:d[u])
{
if (v==p) continue;
if (!vs[v]) dfs(v, u, id);
else if ((lvl[u]-lvl[v]+1)%2==0) f=1;
}
if (idx==-1) return;
res[idx]=2*h[u];
h[p]-=h[u];
}
int main()
{
cin.tie(NULL)->sync_with_stdio(false);
cin>>n>>m;
for (int i=1; i<=n; i++) cin>>h[i];
for (int i=1; i<=m; i++) cin>>u>>v, d[u].push_back({v, i}), d[v].push_back({u, i});
dfs(1, 1, -1);
if (m>n||f)
{
cout<<0;
return 0;
}
for (int i=1; i<n; i++) cout<<res[i]<<'\n';
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
19288 KB |
Output is correct |
| 2 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 3 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 4 |
Correct |
40 ms |
23088 KB |
Output is correct |
| 5 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 6 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 7 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 8 |
Correct |
4 ms |
19112 KB |
Output is correct |
| 9 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 10 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 11 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 12 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 13 |
Correct |
35 ms |
22172 KB |
Output is correct |
| 14 |
Correct |
38 ms |
23032 KB |
Output is correct |
| 15 |
Correct |
42 ms |
23104 KB |
Output is correct |
| 16 |
Correct |
35 ms |
22608 KB |
Output is correct |
| 17 |
Correct |
39 ms |
23376 KB |
Output is correct |
| 18 |
Correct |
38 ms |
23132 KB |
Output is correct |
| 19 |
Correct |
42 ms |
26456 KB |
Output is correct |
| 20 |
Correct |
3 ms |
19108 KB |
Output is correct |
| 21 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 22 |
Correct |
38 ms |
23136 KB |
Output is correct |
| 23 |
Correct |
31 ms |
22296 KB |
Output is correct |
| 24 |
Correct |
38 ms |
23264 KB |
Output is correct |
| 25 |
Correct |
32 ms |
22364 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
3 ms |
19032 KB |
Output isn't correct |
| 2 |
Incorrect |
4 ms |
19032 KB |
Output isn't correct |
| 3 |
Correct |
34 ms |
25676 KB |
Output is correct |
| 4 |
Correct |
38 ms |
28240 KB |
Output is correct |
| 5 |
Correct |
32 ms |
22608 KB |
Output is correct |
| 6 |
Correct |
133 ms |
39252 KB |
Output is correct |
| 7 |
Incorrect |
3 ms |
19036 KB |
Output isn't correct |
| 8 |
Incorrect |
3 ms |
19036 KB |
Output isn't correct |
| 9 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 10 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 11 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 12 |
Correct |
4 ms |
19544 KB |
Output is correct |
| 13 |
Correct |
3 ms |
19032 KB |
Output is correct |
| 14 |
Incorrect |
3 ms |
19036 KB |
Output isn't correct |
| 15 |
Incorrect |
4 ms |
19036 KB |
Output isn't correct |
| 16 |
Incorrect |
4 ms |
19036 KB |
Output isn't correct |
| 17 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 18 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 19 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 20 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 21 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 22 |
Incorrect |
4 ms |
19196 KB |
Output isn't correct |
| 23 |
Incorrect |
35 ms |
26112 KB |
Output isn't correct |
| 24 |
Incorrect |
42 ms |
26892 KB |
Output isn't correct |
| 25 |
Correct |
36 ms |
25624 KB |
Output is correct |
| 26 |
Correct |
40 ms |
27484 KB |
Output is correct |
| 27 |
Correct |
37 ms |
27812 KB |
Output is correct |
| 28 |
Correct |
34 ms |
22588 KB |
Output is correct |
| 29 |
Correct |
110 ms |
36440 KB |
Output is correct |
| 30 |
Incorrect |
44 ms |
29364 KB |
Output isn't correct |
| 31 |
Incorrect |
43 ms |
29520 KB |
Output isn't correct |
| 32 |
Incorrect |
40 ms |
24404 KB |
Output isn't correct |
| 33 |
Correct |
35 ms |
26712 KB |
Output is correct |
| 34 |
Correct |
36 ms |
26704 KB |
Output is correct |
| 35 |
Correct |
39 ms |
28240 KB |
Output is correct |
| 36 |
Correct |
32 ms |
22608 KB |
Output is correct |
| 37 |
Correct |
148 ms |
39796 KB |
Output is correct |
| 38 |
Incorrect |
45 ms |
28496 KB |
Output isn't correct |
| 39 |
Incorrect |
39 ms |
23824 KB |
Output isn't correct |
| 40 |
Incorrect |
42 ms |
26708 KB |
Output isn't correct |
| 41 |
Correct |
37 ms |
29004 KB |
Output is correct |
| 42 |
Correct |
36 ms |
26964 KB |
Output is correct |
| 43 |
Correct |
37 ms |
28496 KB |
Output is correct |
| 44 |
Correct |
33 ms |
22620 KB |
Output is correct |
| 45 |
Correct |
100 ms |
34900 KB |
Output is correct |
| 46 |
Incorrect |
43 ms |
30032 KB |
Output isn't correct |
| 47 |
Incorrect |
41 ms |
26852 KB |
Output isn't correct |
| 48 |
Incorrect |
44 ms |
29272 KB |
Output isn't correct |
| 49 |
Correct |
32 ms |
23456 KB |
Output is correct |
| 50 |
Correct |
35 ms |
26708 KB |
Output is correct |
| 51 |
Correct |
35 ms |
24912 KB |
Output is correct |
| 52 |
Correct |
34 ms |
24156 KB |
Output is correct |
| 53 |
Correct |
108 ms |
35692 KB |
Output is correct |
| 54 |
Incorrect |
56 ms |
27984 KB |
Output isn't correct |
