#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define pii pair<int, int>
#define pipii pair<int, pair<int, int>>
#define vi vector<int>
#define vpi vector<pair<int, int>>
#define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
#define out(name) if(fopen(name, "w")) freopen(name, "w", stdout);
#define int long long
const int N = 1e6 + 5;
const int mod = 1e9 + 7;
using namespace std;
long long n, m, c[N], ans[N];
vpi ad[N];
void dfs(int u, int p)
{
long long res = 0;
for(auto [v, pos] : ad[u])
{
if(v == p) continue ;
dfs(v, u);
ans[pos] = 2 * c[v];
c[u] += c[v];
}
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(0);
cin >> n >> m;
for(int i = 1; i <= n; ++i)
{
cin >> c[i];
}
for(int i = 1; i <= m; ++i)
{
int u, v;
cin >> u >> v;
ad[u].pb({v, i});
ad[v].pb({u, i});
}
if(m != (n-1))
{
cout << 0;
return 0;
}
dfs(1, 0);
for(int i = 1; i <= m; ++i)
{
cout << 2*ans[i] << "\n";
}
return 0;
}
Compilation message
pipes.cpp: In function 'void dfs(long long int, long long int)':
pipes.cpp:19:15: warning: unused variable 'res' [-Wunused-variable]
19 | long long res = 0;
| ^~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
12 ms |
23896 KB |
Output isn't correct |
| 2 |
Incorrect |
13 ms |
23900 KB |
Output isn't correct |
| 3 |
Incorrect |
10 ms |
23896 KB |
Output isn't correct |
| 4 |
Incorrect |
49 ms |
32596 KB |
Output isn't correct |
| 5 |
Incorrect |
11 ms |
23896 KB |
Output isn't correct |
| 6 |
Incorrect |
12 ms |
23900 KB |
Output isn't correct |
| 7 |
Incorrect |
12 ms |
23900 KB |
Output isn't correct |
| 8 |
Incorrect |
11 ms |
23900 KB |
Output isn't correct |
| 9 |
Incorrect |
11 ms |
23900 KB |
Output isn't correct |
| 10 |
Incorrect |
11 ms |
23900 KB |
Output isn't correct |
| 11 |
Incorrect |
10 ms |
23896 KB |
Output isn't correct |
| 12 |
Incorrect |
11 ms |
23900 KB |
Output isn't correct |
| 13 |
Incorrect |
40 ms |
30804 KB |
Output isn't correct |
| 14 |
Incorrect |
42 ms |
32064 KB |
Output isn't correct |
| 15 |
Incorrect |
47 ms |
32592 KB |
Output isn't correct |
| 16 |
Incorrect |
45 ms |
31152 KB |
Output isn't correct |
| 17 |
Incorrect |
48 ms |
32592 KB |
Output isn't correct |
| 18 |
Incorrect |
47 ms |
32536 KB |
Output isn't correct |
| 19 |
Incorrect |
59 ms |
36692 KB |
Output isn't correct |
| 20 |
Incorrect |
12 ms |
23964 KB |
Output isn't correct |
| 21 |
Incorrect |
12 ms |
23900 KB |
Output isn't correct |
| 22 |
Incorrect |
45 ms |
32716 KB |
Output isn't correct |
| 23 |
Incorrect |
42 ms |
30804 KB |
Output isn't correct |
| 24 |
Incorrect |
48 ms |
32596 KB |
Output isn't correct |
| 25 |
Incorrect |
44 ms |
31084 KB |
Output isn't correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
10 ms |
23900 KB |
Output isn't correct |
| 2 |
Incorrect |
11 ms |
23900 KB |
Output isn't correct |
| 3 |
Correct |
39 ms |
30992 KB |
Output is correct |
| 4 |
Correct |
39 ms |
31312 KB |
Output is correct |
| 5 |
Correct |
45 ms |
31060 KB |
Output is correct |
| 6 |
Correct |
136 ms |
56912 KB |
Output is correct |
| 7 |
Incorrect |
11 ms |
23896 KB |
Output isn't correct |
| 8 |
Incorrect |
11 ms |
23964 KB |
Output isn't correct |
| 9 |
Correct |
11 ms |
23900 KB |
Output is correct |
| 10 |
Correct |
10 ms |
23900 KB |
Output is correct |
| 11 |
Correct |
10 ms |
23972 KB |
Output is correct |
| 12 |
Correct |
10 ms |
23776 KB |
Output is correct |
| 13 |
Correct |
10 ms |
23900 KB |
Output is correct |
| 14 |
Incorrect |
12 ms |
23900 KB |
Output isn't correct |
| 15 |
Incorrect |
11 ms |
23900 KB |
Output isn't correct |
| 16 |
Incorrect |
11 ms |
23896 KB |
Output isn't correct |
| 17 |
Correct |
11 ms |
24028 KB |
Output is correct |
| 18 |
Correct |
15 ms |
23956 KB |
Output is correct |
| 19 |
Correct |
11 ms |
23900 KB |
Output is correct |
| 20 |
Correct |
11 ms |
24152 KB |
Output is correct |
| 21 |
Correct |
12 ms |
23900 KB |
Output is correct |
| 22 |
Incorrect |
13 ms |
23816 KB |
Output isn't correct |
| 23 |
Incorrect |
35 ms |
29852 KB |
Output isn't correct |
| 24 |
Incorrect |
45 ms |
31316 KB |
Output isn't correct |
| 25 |
Correct |
40 ms |
30924 KB |
Output is correct |
| 26 |
Correct |
48 ms |
31492 KB |
Output is correct |
| 27 |
Correct |
41 ms |
31312 KB |
Output is correct |
| 28 |
Correct |
43 ms |
31576 KB |
Output is correct |
| 29 |
Correct |
104 ms |
50408 KB |
Output is correct |
| 30 |
Incorrect |
39 ms |
31060 KB |
Output isn't correct |
| 31 |
Incorrect |
40 ms |
31280 KB |
Output isn't correct |
| 32 |
Incorrect |
45 ms |
31628 KB |
Output isn't correct |
| 33 |
Correct |
40 ms |
31316 KB |
Output is correct |
| 34 |
Correct |
40 ms |
31512 KB |
Output is correct |
| 35 |
Correct |
44 ms |
31428 KB |
Output is correct |
| 36 |
Correct |
43 ms |
31400 KB |
Output is correct |
| 37 |
Correct |
138 ms |
56656 KB |
Output is correct |
| 38 |
Incorrect |
45 ms |
31320 KB |
Output isn't correct |
| 39 |
Incorrect |
42 ms |
31220 KB |
Output isn't correct |
| 40 |
Incorrect |
36 ms |
31456 KB |
Output isn't correct |
| 41 |
Correct |
42 ms |
31308 KB |
Output is correct |
| 42 |
Correct |
40 ms |
31256 KB |
Output is correct |
| 43 |
Correct |
44 ms |
31312 KB |
Output is correct |
| 44 |
Correct |
40 ms |
31056 KB |
Output is correct |
| 45 |
Correct |
99 ms |
53072 KB |
Output is correct |
| 46 |
Incorrect |
43 ms |
31316 KB |
Output isn't correct |
| 47 |
Incorrect |
41 ms |
31312 KB |
Output isn't correct |
| 48 |
Incorrect |
39 ms |
31316 KB |
Output isn't correct |
| 49 |
Correct |
38 ms |
30936 KB |
Output is correct |
| 50 |
Correct |
40 ms |
31316 KB |
Output is correct |
| 51 |
Correct |
36 ms |
31320 KB |
Output is correct |
| 52 |
Correct |
44 ms |
31312 KB |
Output is correct |
| 53 |
Correct |
105 ms |
52568 KB |
Output is correct |
| 54 |
Incorrect |
42 ms |
31320 KB |
Output isn't correct |
