#include<bits/stdc++.h>
using namespace std;
const long long inf = (long long) 1e18 + 10;
const int inf1 = (int) 1e9 + 10;
#define int long long
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
const int maxn = 5e5+10;
int n, m, c[maxn], ans[maxn], gr[maxn];
vector<pair<int,int>> g[maxn], g1[maxn];
int sm = 0;
vector<int> vrt;
void dfs(int u, int ant, int cnt) {
sm+= c[u]*cnt;
auto V = g1[u][0];
if(V.fr == ant) V = g1[u][1];
int v = V.fr;
if(v == vrt[0]) return;
dfs(v,u,cnt*-1);
}
void solve() {
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;
g[u].pb(mp(v,i));
g[v].pb(mp(u,i));
gr[u]++;
gr[v]++;
}
if(m > n) {
cout << 0 << endl;
return;
}
queue<int> q;
for(int i = 1; i <= n; i++) {
if(gr[i] == 1) q.push(i);
}
while(q.size()) {
int u = q.front(); q.pop();
gr[u] = -1;
for(auto V : g[u]) {
int v = V.fr;
int id = V.sc;
if(gr[v] == -1) continue;
ans[id] = 2*c[u];
c[v]-= c[u];
if(--gr[v] == 1) q.push(v);
}
}
if(n == m) {
for(int i = 1; i <= n; i++) {
if(gr[i] != -1) {
vrt.pb(i);
for(auto V : g[i]) {
if(gr[V.fr] != -1) {
g1[i].pb(V);
}
}
}
}
if(vrt.size()%2 == 1) {
dfs(vrt[0],-1,1);
ans[g1[vrt[0]][1].sc] = sm;
c[g1[vrt[0]][1].fr]-= sm/2;
c[vrt[0]]-= sm/2;
gr[g1[vrt[0]][1].fr]--;
gr[vrt[0]]--;
q.push(g1[vrt[0]][1].fr);
q.push(vrt[0]);
}
else {
assert(0);
}
while(q.size()) {
int u = q.front(); q.pop();
gr[u] = -1;
for(auto V : g[u]) {
int v = V.fr;
int id = V.sc;
if(gr[v] == -1 || id == g1[vrt[0]][1].sc) continue;
ans[id] = 2*c[u];
c[v]-= c[u];
if(--gr[v] == 1) q.push(v);
}
}
}
for(int i = 1; i <= m; i++) {
cout << ans[i] << endl;
}
}
int32_t main() {
ios::sync_with_stdio(false); cin.tie(0);
// freopen("in.in", "r", stdin);
// freopen("out.out", "w", stdout);
int tt = 1;
// cin >> tt;
while(tt--) {
solve();
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
13 ms |
23836 KB |
Output is correct |
2 |
Correct |
12 ms |
23760 KB |
Output is correct |
3 |
Correct |
12 ms |
23824 KB |
Output is correct |
4 |
Correct |
65 ms |
32076 KB |
Output is correct |
5 |
Correct |
12 ms |
23716 KB |
Output is correct |
6 |
Correct |
12 ms |
23716 KB |
Output is correct |
7 |
Correct |
13 ms |
23764 KB |
Output is correct |
8 |
Correct |
13 ms |
23764 KB |
Output is correct |
9 |
Correct |
15 ms |
23812 KB |
Output is correct |
10 |
Correct |
12 ms |
23852 KB |
Output is correct |
11 |
Correct |
14 ms |
23892 KB |
Output is correct |
12 |
Correct |
14 ms |
23892 KB |
Output is correct |
13 |
Correct |
57 ms |
30356 KB |
Output is correct |
14 |
Correct |
64 ms |
31564 KB |
Output is correct |
15 |
Correct |
70 ms |
32088 KB |
Output is correct |
16 |
Correct |
65 ms |
30864 KB |
Output is correct |
17 |
Correct |
80 ms |
32056 KB |
Output is correct |
18 |
Correct |
70 ms |
32176 KB |
Output is correct |
19 |
Correct |
79 ms |
31676 KB |
Output is correct |
20 |
Correct |
13 ms |
23764 KB |
Output is correct |
21 |
Correct |
13 ms |
23892 KB |
Output is correct |
22 |
Correct |
81 ms |
32100 KB |
Output is correct |
23 |
Correct |
58 ms |
30412 KB |
Output is correct |
24 |
Correct |
67 ms |
32132 KB |
Output is correct |
25 |
Correct |
55 ms |
30672 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
12 ms |
23764 KB |
Output is correct |
2 |
Correct |
13 ms |
23892 KB |
Output is correct |
3 |
Runtime error |
124 ms |
67348 KB |
Execution killed with signal 6 |
4 |
Correct |
52 ms |
30504 KB |
Output is correct |
5 |
Correct |
51 ms |
30220 KB |
Output is correct |
6 |
Correct |
179 ms |
51388 KB |
Output is correct |
7 |
Correct |
15 ms |
23828 KB |
Output is correct |
8 |
Correct |
13 ms |
23764 KB |
Output is correct |
9 |
Runtime error |
31 ms |
48092 KB |
Execution killed with signal 6 |
10 |
Correct |
12 ms |
23764 KB |
Output is correct |
11 |
Correct |
14 ms |
23784 KB |
Output is correct |
12 |
Correct |
12 ms |
23784 KB |
Output is correct |
13 |
Correct |
13 ms |
23764 KB |
Output is correct |
14 |
Correct |
15 ms |
23836 KB |
Output is correct |
15 |
Correct |
13 ms |
23968 KB |
Output is correct |
16 |
Correct |
13 ms |
23892 KB |
Output is correct |
17 |
Runtime error |
32 ms |
48252 KB |
Execution killed with signal 6 |
18 |
Correct |
13 ms |
23760 KB |
Output is correct |
19 |
Correct |
12 ms |
23796 KB |
Output is correct |
20 |
Correct |
13 ms |
23808 KB |
Output is correct |
21 |
Correct |
14 ms |
23892 KB |
Output is correct |
22 |
Correct |
12 ms |
23892 KB |
Output is correct |
23 |
Correct |
71 ms |
33048 KB |
Output is correct |
24 |
Correct |
89 ms |
34564 KB |
Output is correct |
25 |
Runtime error |
94 ms |
67404 KB |
Execution killed with signal 6 |
26 |
Correct |
54 ms |
30580 KB |
Output is correct |
27 |
Correct |
48 ms |
30436 KB |
Output is correct |
28 |
Correct |
59 ms |
30828 KB |
Output is correct |
29 |
Correct |
162 ms |
45984 KB |
Output is correct |
30 |
Correct |
82 ms |
33936 KB |
Output is correct |
31 |
Correct |
100 ms |
36448 KB |
Output is correct |
32 |
Correct |
77 ms |
32588 KB |
Output is correct |
33 |
Runtime error |
94 ms |
69484 KB |
Execution killed with signal 6 |
34 |
Correct |
52 ms |
30524 KB |
Output is correct |
35 |
Correct |
65 ms |
30572 KB |
Output is correct |
36 |
Correct |
52 ms |
30540 KB |
Output is correct |
37 |
Correct |
170 ms |
51316 KB |
Output is correct |
38 |
Correct |
84 ms |
34204 KB |
Output is correct |
39 |
Correct |
71 ms |
32220 KB |
Output is correct |
40 |
Correct |
99 ms |
34396 KB |
Output is correct |
41 |
Runtime error |
91 ms |
72868 KB |
Execution killed with signal 6 |
42 |
Correct |
54 ms |
30468 KB |
Output is correct |
43 |
Correct |
66 ms |
30468 KB |
Output is correct |
44 |
Correct |
50 ms |
30260 KB |
Output is correct |
45 |
Correct |
174 ms |
48348 KB |
Output is correct |
46 |
Correct |
83 ms |
33756 KB |
Output is correct |
47 |
Correct |
87 ms |
34444 KB |
Output is correct |
48 |
Correct |
88 ms |
36320 KB |
Output is correct |
49 |
Runtime error |
78 ms |
64028 KB |
Execution killed with signal 6 |
50 |
Correct |
54 ms |
30536 KB |
Output is correct |
51 |
Correct |
57 ms |
30460 KB |
Output is correct |
52 |
Correct |
53 ms |
30428 KB |
Output is correct |
53 |
Correct |
141 ms |
47624 KB |
Output is correct |
54 |
Correct |
78 ms |
33632 KB |
Output is correct |