#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
int main() {
ios_base::sync_with_stdio(false); cin.tie(nullptr);
int n, m;
cin >> n >> m;
if (n != m + 1) {
cout << 0;
return 0;
}
vector<vector<pair<int, int>>> g(n + 1);
vector<int> cnt(n + 1), ans(m), a(n + 1);
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
for (int i = 0; i < m; i++) {
int u, v;
cin >> u >> v;
g[u].emplace_back(v, i);
g[v].emplace_back(u, i);
}
queue<int> q;
vector<bool> vis(n + 1);
for (int i = 1; i <= n; i++) {
cnt[i] = g[i].size();
if (cnt[i] == 1) {
q.push(i);
}
}
while (!q.empty()) {
int u = q.front();
q.pop();
vis[u] = true;
for (auto [v, i]: g[u]) {
if (vis[v]) continue;
cnt[v]--;
if (cnt[v] == 1) q.push(v);
ans[i] = a[u] * 2;
a[v] -= a[u];
}
}
for (int x: ans) cout << x << '\n';
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
65 ms |
8160 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
46 ms |
6516 KB |
Output is correct |
| 14 |
Correct |
61 ms |
7752 KB |
Output is correct |
| 15 |
Correct |
68 ms |
8196 KB |
Output is correct |
| 16 |
Correct |
47 ms |
7016 KB |
Output is correct |
| 17 |
Correct |
57 ms |
8180 KB |
Output is correct |
| 18 |
Correct |
59 ms |
8196 KB |
Output is correct |
| 19 |
Correct |
53 ms |
7392 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
340 KB |
Output is correct |
| 22 |
Correct |
58 ms |
8240 KB |
Output is correct |
| 23 |
Correct |
39 ms |
6604 KB |
Output is correct |
| 24 |
Correct |
59 ms |
8204 KB |
Output is correct |
| 25 |
Correct |
50 ms |
6852 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 15 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 16 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 23 |
Incorrect |
3 ms |
212 KB |
Output isn't correct |
| 24 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 31 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 32 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 33 |
Correct |
0 ms |
212 KB |
Output is correct |
| 34 |
Correct |
0 ms |
212 KB |
Output is correct |
| 35 |
Correct |
0 ms |
212 KB |
Output is correct |
| 36 |
Correct |
1 ms |
212 KB |
Output is correct |
| 37 |
Correct |
1 ms |
212 KB |
Output is correct |
| 38 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 39 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 40 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 41 |
Correct |
0 ms |
212 KB |
Output is correct |
| 42 |
Correct |
0 ms |
212 KB |
Output is correct |
| 43 |
Correct |
0 ms |
212 KB |
Output is correct |
| 44 |
Correct |
0 ms |
212 KB |
Output is correct |
| 45 |
Correct |
1 ms |
212 KB |
Output is correct |
| 46 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 47 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 48 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 49 |
Correct |
0 ms |
212 KB |
Output is correct |
| 50 |
Correct |
1 ms |
212 KB |
Output is correct |
| 51 |
Correct |
0 ms |
212 KB |
Output is correct |
| 52 |
Correct |
0 ms |
212 KB |
Output is correct |
| 53 |
Correct |
1 ms |
212 KB |
Output is correct |
| 54 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
