| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 885119 |
2023-12-09T03:03:40 Z |
12345678 |
Pipes (BOI13_pipes) |
C++17 |
|
141 ms |
59732 KB |
#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;
}
if (m==n)cout<<1/0;
for (int i=1; i<n; i++) cout<<res[i]<<'\n';
}
Compilation message
pipes.cpp: In function 'int main()':
pipes.cpp:37:21: warning: division by zero [-Wdiv-by-zero]
37 | if (m==n)cout<<1/0;
| ~^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 2 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 3 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 4 |
Correct |
38 ms |
23124 KB |
Output is correct |
| 5 |
Correct |
3 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 |
3 ms |
19036 KB |
Output is correct |
| 9 |
Correct |
4 ms |
19148 KB |
Output is correct |
| 10 |
Correct |
4 ms |
19104 KB |
Output is correct |
| 11 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 12 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 13 |
Correct |
34 ms |
22352 KB |
Output is correct |
| 14 |
Correct |
41 ms |
22872 KB |
Output is correct |
| 15 |
Correct |
43 ms |
23048 KB |
Output is correct |
| 16 |
Correct |
34 ms |
22612 KB |
Output is correct |
| 17 |
Correct |
39 ms |
23124 KB |
Output is correct |
| 18 |
Correct |
40 ms |
23132 KB |
Output is correct |
| 19 |
Correct |
42 ms |
26452 KB |
Output is correct |
| 20 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 21 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 22 |
Correct |
41 ms |
23228 KB |
Output is correct |
| 23 |
Correct |
30 ms |
22408 KB |
Output is correct |
| 24 |
Correct |
40 ms |
23124 KB |
Output is correct |
| 25 |
Correct |
33 ms |
22356 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
17 ms |
38236 KB |
Execution killed with signal 4 |
| 2 |
Runtime error |
20 ms |
38412 KB |
Execution killed with signal 4 |
| 3 |
Correct |
34 ms |
25680 KB |
Output is correct |
| 4 |
Correct |
41 ms |
28496 KB |
Output is correct |
| 5 |
Correct |
37 ms |
22576 KB |
Output is correct |
| 6 |
Correct |
131 ms |
39252 KB |
Output is correct |
| 7 |
Runtime error |
17 ms |
38236 KB |
Execution killed with signal 4 |
| 8 |
Runtime error |
17 ms |
38236 KB |
Execution killed with signal 4 |
| 9 |
Correct |
3 ms |
19068 KB |
Output is correct |
| 10 |
Correct |
3 ms |
19288 KB |
Output is correct |
| 11 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 12 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 13 |
Correct |
3 ms |
19032 KB |
Output is correct |
| 14 |
Runtime error |
17 ms |
38176 KB |
Execution killed with signal 4 |
| 15 |
Runtime error |
18 ms |
38516 KB |
Execution killed with signal 4 |
| 16 |
Runtime error |
18 ms |
38492 KB |
Execution killed with signal 4 |
| 17 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 18 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 19 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 20 |
Correct |
3 ms |
19036 KB |
Output is correct |
| 21 |
Correct |
4 ms |
19036 KB |
Output is correct |
| 22 |
Runtime error |
17 ms |
38344 KB |
Execution killed with signal 4 |
| 23 |
Runtime error |
46 ms |
52052 KB |
Execution killed with signal 4 |
| 24 |
Runtime error |
51 ms |
53524 KB |
Execution killed with signal 4 |
| 25 |
Correct |
34 ms |
25688 KB |
Output is correct |
| 26 |
Correct |
36 ms |
27500 KB |
Output is correct |
| 27 |
Correct |
38 ms |
27848 KB |
Output is correct |
| 28 |
Correct |
35 ms |
22736 KB |
Output is correct |
| 29 |
Correct |
108 ms |
36552 KB |
Output is correct |
| 30 |
Runtime error |
56 ms |
58468 KB |
Execution killed with signal 4 |
| 31 |
Runtime error |
59 ms |
58704 KB |
Execution killed with signal 4 |
| 32 |
Runtime error |
50 ms |
48360 KB |
Execution killed with signal 4 |
| 33 |
Correct |
35 ms |
26724 KB |
Output is correct |
| 34 |
Correct |
37 ms |
26708 KB |
Output is correct |
| 35 |
Correct |
38 ms |
28252 KB |
Output is correct |
| 36 |
Correct |
33 ms |
22608 KB |
Output is correct |
| 37 |
Correct |
141 ms |
39748 KB |
Output is correct |
| 38 |
Runtime error |
57 ms |
56660 KB |
Execution killed with signal 4 |
| 39 |
Runtime error |
49 ms |
47440 KB |
Execution killed with signal 4 |
| 40 |
Runtime error |
51 ms |
52820 KB |
Execution killed with signal 4 |
| 41 |
Correct |
38 ms |
29008 KB |
Output is correct |
| 42 |
Correct |
47 ms |
27216 KB |
Output is correct |
| 43 |
Correct |
37 ms |
28436 KB |
Output is correct |
| 44 |
Correct |
40 ms |
22704 KB |
Output is correct |
| 45 |
Correct |
101 ms |
34964 KB |
Output is correct |
| 46 |
Runtime error |
57 ms |
59732 KB |
Execution killed with signal 4 |
| 47 |
Runtime error |
51 ms |
53212 KB |
Execution killed with signal 4 |
| 48 |
Runtime error |
56 ms |
58088 KB |
Execution killed with signal 4 |
| 49 |
Correct |
31 ms |
23636 KB |
Output is correct |
| 50 |
Correct |
36 ms |
26632 KB |
Output is correct |
| 51 |
Correct |
36 ms |
24924 KB |
Output is correct |
| 52 |
Correct |
34 ms |
24144 KB |
Output is correct |
| 53 |
Correct |
105 ms |
35664 KB |
Output is correct |
| 54 |
Runtime error |
55 ms |
55544 KB |
Execution killed with signal 4 |
