#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;
ll n,m,i,a[101010],h[505050],ta,tb;
vector<ll> v[101010],w[101010];
ll dfs(ll aa,ll bb,ll cc)
{
ll ii;
for(ii=0;ii<v[aa].size();ii++)
{
if(w[aa][ii]==bb)continue;
dfs(v[aa][ii],w[aa][ii],aa);
}
if(aa==1)
{
if(a[aa]!=0)
{
cout<<0<<"\n";
exit(0);
}
}
else
{
h[bb]=a[aa]*2;
a[cc]-=a[aa];
a[aa]-=0;
}
}
int main()
{
ios_base::sync_with_stdio(NULL);cin.tie(NULL);cout.tie(NULL);
cin>>n>>m;
if(m>=n)
{
cout<<0<<"\n";
return 0;
}
for(i=1;i<=n;i++)cin>>a[i];
for(i=1;i<=m;i++)
{
cin>>ta>>tb;
v[ta].pb(tb);
v[tb].pb(ta);
w[ta].pb(i);
w[tb].pb(i);
}
dfs(1,0,0);
for(i=1;i<=m;i++)cout<<h[i]<<"\n";
}
Compilation message
pipes.cpp: In function 'long long int dfs(long long int, long long int, long long int)':
pipes.cpp:13:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(ii=0;ii<v[aa].size();ii++)
~~^~~~~~~~~~~~~
pipes.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 2 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 3 |
Correct |
7 ms |
5212 KB |
Output is correct |
| 4 |
Correct |
129 ms |
14780 KB |
Output is correct |
| 5 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 6 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 7 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 8 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 9 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 10 |
Correct |
7 ms |
5244 KB |
Output is correct |
| 11 |
Correct |
6 ms |
5240 KB |
Output is correct |
| 12 |
Correct |
6 ms |
5240 KB |
Output is correct |
| 13 |
Correct |
89 ms |
12920 KB |
Output is correct |
| 14 |
Correct |
128 ms |
14408 KB |
Output is correct |
| 15 |
Correct |
119 ms |
14844 KB |
Output is correct |
| 16 |
Correct |
99 ms |
13432 KB |
Output is correct |
| 17 |
Correct |
115 ms |
14820 KB |
Output is correct |
| 18 |
Correct |
126 ms |
14852 KB |
Output is correct |
| 19 |
Correct |
139 ms |
16820 KB |
Output is correct |
| 20 |
Correct |
6 ms |
5084 KB |
Output is correct |
| 21 |
Correct |
6 ms |
5240 KB |
Output is correct |
| 22 |
Correct |
112 ms |
14816 KB |
Output is correct |
| 23 |
Correct |
86 ms |
12988 KB |
Output is correct |
| 24 |
Correct |
113 ms |
14844 KB |
Output is correct |
| 25 |
Correct |
99 ms |
13304 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 2 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 3 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 4 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 5 |
Correct |
6 ms |
5240 KB |
Output is correct |
| 6 |
Correct |
6 ms |
5032 KB |
Output is correct |
| 7 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 8 |
Incorrect |
5 ms |
5112 KB |
Output isn't correct |
| 9 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 10 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 11 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 12 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 13 |
Correct |
5 ms |
5116 KB |
Output is correct |
| 14 |
Incorrect |
5 ms |
5112 KB |
Output isn't correct |
| 15 |
Incorrect |
5 ms |
5112 KB |
Output isn't correct |
| 16 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 17 |
Correct |
6 ms |
5240 KB |
Output is correct |
| 18 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 19 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 20 |
Correct |
1 ms |
5112 KB |
Output is correct |
| 21 |
Correct |
6 ms |
5240 KB |
Output is correct |
| 22 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 23 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 24 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 25 |
Correct |
7 ms |
5112 KB |
Output is correct |
| 26 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 27 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 28 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 29 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 30 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 31 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 32 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 33 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 34 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 35 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 36 |
Correct |
6 ms |
5032 KB |
Output is correct |
| 37 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 38 |
Incorrect |
6 ms |
5140 KB |
Output isn't correct |
| 39 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
| 40 |
Incorrect |
5 ms |
5112 KB |
Output isn't correct |
| 41 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 42 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 43 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 44 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 45 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 46 |
Incorrect |
5 ms |
5112 KB |
Output isn't correct |
| 47 |
Incorrect |
5 ms |
5112 KB |
Output isn't correct |
| 48 |
Incorrect |
5 ms |
5112 KB |
Output isn't correct |
| 49 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 50 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 51 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 52 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 53 |
Correct |
6 ms |
5112 KB |
Output is correct |
| 54 |
Incorrect |
6 ms |
5112 KB |
Output isn't correct |
