# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1242692 | haithamcoder | Split the Attractions (IOI19_split) | C++20 | 0 ms | 0 KiB |
vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) {
// vector<ll> res;
vector<vector<ll>> adj(n);
ll m = p.size();
for (ll i = 0; i < m; i++) {
adj[p[i]].push_back(q[i]);
adj[q[i]].push_back(p[i]);
}
ll root = 0;
for (ll i = 0; i < n; i++) {
if (adj[i].size() == 1) {
root = i;
break;
}
}
ll par = -1, u = root;
dbg(root);
vector<ll> res(n);
ll num = 1;
ll cnt = 0;
vector<bool> vis(n, 0);
while (num < 4) {
vis[u] = 1;
res[u] = num;
// dbg(u);
cnt++;
for (auto c : adj[u]) {
// db(c); db(u); dbg(par);
if (c != par) {
par = u;
u = c;
break;
}
}
if ((num == 1 && cnt >= a) || (num == 2 && cnt >= b) || (num == 3 && cnt >= c)) {
num++;
cnt = 0;
}
if (num == 4) break;
}
/*for (ll i = 0; i < n; i++) {
if (!vis[i]) res[i] = 3;
}*/
return res;
}