#include <bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC target ("sse4")
#define endl "\n"
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
template<class T, class T2> inline bool chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline bool chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
const ll mod = 1e9 + 7;
template<class T> inline void fix(T &x) {if(x >= mod | x <= -mod) {x %= mod;} if(x < 0) {x += mod;}}
#define out(x) cout << __LINE__ << ": " << (#x) << " = " << (x) << endl
const ll MAX_N = 1e5 + 10;
set<pair<ll, ll> > g[MAX_N];
ll ans[MAX_N], arr[MAX_N];
struct cmp {
bool operator ()(const ll &a, const ll &b) const {
if(g[a].size() == g[b].size()) {
return a < b;
}
return g[a].size() < g[b].size();
}
};
multiset<ll, cmp> pq;
void removeBranches() {
while(!pq.empty() && g[*(pq.begin())].size() == 1) {
ll curr = *(pq.begin()); pq.erase(pq.begin());
auto other = *(g[curr].begin());
pq.erase(other.first);
ans[other.second] = arr[curr];
arr[other.first] -= arr[curr];
g[other.first].erase({curr, other.second});
pq.insert(other.first);
}
}
signed main() {
//ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
ll n, m;
cin >> n >> m;
if(m > n) {cout << 0 << endl; return 0;}
for(ll i = 1; i <= n; i ++) {
cin >> arr[i];
}
for(ll i = 0; i < m; i ++) {
ll a, b;
cin >> a >> b;
g[a].insert({b, i});
g[b].insert({a, i});
}
for(ll i = 1; i <= n; i ++) {
pq.insert(i);
}
removeBranches();
for(ll i = 0; i < m; i ++) {
cout << ans[i] * 2 << endl;
}
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 2 |
Correct |
5 ms |
4992 KB |
Output is correct |
| 3 |
Correct |
5 ms |
5248 KB |
Output is correct |
| 4 |
Correct |
349 ms |
24312 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 6 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 8 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 9 |
Correct |
5 ms |
5248 KB |
Output is correct |
| 10 |
Correct |
6 ms |
5248 KB |
Output is correct |
| 11 |
Correct |
5 ms |
5248 KB |
Output is correct |
| 12 |
Correct |
5 ms |
5248 KB |
Output is correct |
| 13 |
Correct |
235 ms |
20472 KB |
Output is correct |
| 14 |
Correct |
283 ms |
23288 KB |
Output is correct |
| 15 |
Correct |
305 ms |
24440 KB |
Output is correct |
| 16 |
Correct |
251 ms |
21752 KB |
Output is correct |
| 17 |
Correct |
359 ms |
24336 KB |
Output is correct |
| 18 |
Correct |
392 ms |
24444 KB |
Output is correct |
| 19 |
Correct |
285 ms |
24440 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 21 |
Correct |
6 ms |
5248 KB |
Output is correct |
| 22 |
Correct |
309 ms |
24440 KB |
Output is correct |
| 23 |
Correct |
249 ms |
20596 KB |
Output is correct |
| 24 |
Correct |
324 ms |
24440 KB |
Output is correct |
| 25 |
Correct |
274 ms |
21240 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
4 ms |
4992 KB |
Output isn't correct |
| 2 |
Incorrect |
5 ms |
5248 KB |
Output isn't correct |
| 3 |
Incorrect |
259 ms |
23160 KB |
Output isn't correct |
| 4 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 5 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 6 |
Correct |
5 ms |
4992 KB |
Output is correct |
| 7 |
Incorrect |
3 ms |
4992 KB |
Output isn't correct |
| 8 |
Incorrect |
4 ms |
4992 KB |
Output isn't correct |
| 9 |
Incorrect |
3 ms |
4992 KB |
Output isn't correct |
| 10 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 13 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 14 |
Incorrect |
3 ms |
4992 KB |
Output isn't correct |
| 15 |
Incorrect |
4 ms |
5248 KB |
Output isn't correct |
| 16 |
Incorrect |
5 ms |
5248 KB |
Output isn't correct |
| 17 |
Incorrect |
5 ms |
5248 KB |
Output isn't correct |
| 18 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 20 |
Correct |
5 ms |
4992 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 22 |
Incorrect |
6 ms |
5248 KB |
Output isn't correct |
| 23 |
Incorrect |
194 ms |
20728 KB |
Output isn't correct |
| 24 |
Incorrect |
266 ms |
24312 KB |
Output isn't correct |
| 25 |
Incorrect |
286 ms |
23164 KB |
Output isn't correct |
| 26 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 27 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 28 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 29 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 30 |
Incorrect |
258 ms |
23928 KB |
Output isn't correct |
| 31 |
Incorrect |
219 ms |
24312 KB |
Output isn't correct |
| 32 |
Incorrect |
296 ms |
24312 KB |
Output isn't correct |
| 33 |
Incorrect |
253 ms |
24312 KB |
Output isn't correct |
| 34 |
Correct |
4 ms |
5120 KB |
Output is correct |
| 35 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 36 |
Correct |
5 ms |
4992 KB |
Output is correct |
| 37 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 38 |
Incorrect |
241 ms |
24276 KB |
Output isn't correct |
| 39 |
Incorrect |
312 ms |
24312 KB |
Output isn't correct |
| 40 |
Incorrect |
287 ms |
24296 KB |
Output isn't correct |
| 41 |
Incorrect |
202 ms |
24184 KB |
Output isn't correct |
| 42 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 43 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 44 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 45 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 46 |
Incorrect |
232 ms |
24328 KB |
Output isn't correct |
| 47 |
Incorrect |
260 ms |
24312 KB |
Output isn't correct |
| 48 |
Incorrect |
212 ms |
24184 KB |
Output isn't correct |
| 49 |
Incorrect |
315 ms |
23288 KB |
Output isn't correct |
| 50 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 51 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 52 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 53 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 54 |
Incorrect |
244 ms |
24184 KB |
Output isn't correct |
