#include <bits/stdc++.h>
#define ll long long
#define sz(x) (int)(x).size()
#define pii pair<int,int>
#define f first
#define s second
using namespace std;
const int MAXN=1e5+10;
int n,m;
vector<pii> edges[MAXN];
int scores[MAXN], cur[MAXN], ans[5*MAXN];
void dfsTree(int c, int p, int x)
{
for (pii i : edges[c])
if (i.f!=p)
{
dfsTree(i.f,c,i.s);
cur[c]+=ans[i.s];
}
if (c!=1)
{
ans[x]=scores[c]-cur[c];
cur[c]+=ans[x];
}
}
void treeCase()
{
dfsTree(1,0,0);
if (scores[1]!=cur[1])
{
cout<<"-1\n";
return;
}
for (int i=0;i<m;++i)
cout<<ans[i]*2<<"\n";
}
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0);
int u,v;
cin>>n>>m;
for (int i=1;i<=n;++i)
cin>>scores[i];
for (int i=0;i<m;++i)
{
cin>>u>>v;
edges[u].push_back({v,i});
edges[v].push_back({u,i});
}
if (m==n-1)
{
treeCase();
return 0;
}
if (m>n)
{
cout<<"-1";
return 0;
}
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 2 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 3 |
Correct |
3 ms |
2816 KB |
Output is correct |
| 4 |
Correct |
87 ms |
8312 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 6 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 7 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 9 |
Correct |
2 ms |
2816 KB |
Output is correct |
| 10 |
Correct |
3 ms |
2944 KB |
Output is correct |
| 11 |
Correct |
3 ms |
2816 KB |
Output is correct |
| 12 |
Correct |
3 ms |
2816 KB |
Output is correct |
| 13 |
Correct |
52 ms |
7160 KB |
Output is correct |
| 14 |
Correct |
67 ms |
8056 KB |
Output is correct |
| 15 |
Correct |
67 ms |
8312 KB |
Output is correct |
| 16 |
Correct |
62 ms |
7544 KB |
Output is correct |
| 17 |
Correct |
68 ms |
8312 KB |
Output is correct |
| 18 |
Correct |
73 ms |
8420 KB |
Output is correct |
| 19 |
Correct |
71 ms |
11640 KB |
Output is correct |
| 20 |
Correct |
2 ms |
2688 KB |
Output is correct |
| 21 |
Correct |
3 ms |
2816 KB |
Output is correct |
| 22 |
Correct |
69 ms |
8312 KB |
Output is correct |
| 23 |
Correct |
56 ms |
7288 KB |
Output is correct |
| 24 |
Correct |
79 ms |
8312 KB |
Output is correct |
| 25 |
Correct |
59 ms |
7464 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 2 |
Incorrect |
3 ms |
2688 KB |
Output isn't correct |
| 3 |
Incorrect |
46 ms |
6648 KB |
Output isn't correct |
| 4 |
Incorrect |
59 ms |
6692 KB |
Output isn't correct |
| 5 |
Incorrect |
56 ms |
6776 KB |
Output isn't correct |
| 6 |
Incorrect |
228 ms |
17236 KB |
Output isn't correct |
| 7 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 8 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 9 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 10 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 11 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 12 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 13 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 14 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 15 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 16 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 17 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 18 |
Incorrect |
3 ms |
2688 KB |
Output isn't correct |
| 19 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 20 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 21 |
Incorrect |
3 ms |
2816 KB |
Output isn't correct |
| 22 |
Incorrect |
2 ms |
2688 KB |
Output isn't correct |
| 23 |
Incorrect |
38 ms |
6016 KB |
Output isn't correct |
| 24 |
Incorrect |
47 ms |
6776 KB |
Output isn't correct |
| 25 |
Incorrect |
43 ms |
6648 KB |
Output isn't correct |
| 26 |
Incorrect |
48 ms |
6648 KB |
Output isn't correct |
| 27 |
Incorrect |
47 ms |
6520 KB |
Output isn't correct |
| 28 |
Incorrect |
46 ms |
7032 KB |
Output isn't correct |
| 29 |
Incorrect |
161 ms |
14560 KB |
Output isn't correct |
| 30 |
Incorrect |
43 ms |
6392 KB |
Output isn't correct |
| 31 |
Incorrect |
46 ms |
6524 KB |
Output isn't correct |
| 32 |
Incorrect |
46 ms |
6904 KB |
Output isn't correct |
| 33 |
Incorrect |
46 ms |
6776 KB |
Output isn't correct |
| 34 |
Incorrect |
46 ms |
6520 KB |
Output isn't correct |
| 35 |
Incorrect |
47 ms |
6648 KB |
Output isn't correct |
| 36 |
Incorrect |
48 ms |
6904 KB |
Output isn't correct |
| 37 |
Incorrect |
208 ms |
17272 KB |
Output isn't correct |
| 38 |
Incorrect |
45 ms |
6648 KB |
Output isn't correct |
| 39 |
Incorrect |
47 ms |
6980 KB |
Output isn't correct |
| 40 |
Incorrect |
48 ms |
6776 KB |
Output isn't correct |
| 41 |
Incorrect |
47 ms |
6520 KB |
Output isn't correct |
| 42 |
Incorrect |
45 ms |
6520 KB |
Output isn't correct |
| 43 |
Incorrect |
52 ms |
6520 KB |
Output isn't correct |
| 44 |
Incorrect |
64 ms |
6776 KB |
Output isn't correct |
| 45 |
Incorrect |
165 ms |
15368 KB |
Output isn't correct |
| 46 |
Incorrect |
47 ms |
6392 KB |
Output isn't correct |
| 47 |
Incorrect |
51 ms |
6776 KB |
Output isn't correct |
| 48 |
Incorrect |
49 ms |
6520 KB |
Output isn't correct |
| 49 |
Incorrect |
51 ms |
6776 KB |
Output isn't correct |
| 50 |
Incorrect |
46 ms |
6648 KB |
Output isn't correct |
| 51 |
Incorrect |
50 ms |
6776 KB |
Output isn't correct |
| 52 |
Incorrect |
48 ms |
6648 KB |
Output isn't correct |
| 53 |
Incorrect |
186 ms |
15248 KB |
Output isn't correct |
| 54 |
Incorrect |
48 ms |
6568 KB |
Output isn't correct |
