Submission #285370

# Submission time Handle Problem Language Result Execution time Memory
285370 2020-08-28T20:21:03 Z ScarletS Pipes (BOI13_pipes) C++17
30 / 100
228 ms 17272 KB
#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;
}
# Verdict Execution time Memory 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
# Verdict Execution time Memory 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