/**
* author: hashman
* created:
**/
#include <bits/stdc++.h>
using namespace std;
string to_string(string s) {
return '"' + s + '"';
}
string to_string(const char* s) {
return to_string((string) s);
}
string to_string(bool b) {
return (b ? "true" : "false");
}
template <typename A, typename B>
string to_string(pair<A, B> p) {
return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
template <typename A>
string to_string(A v) {
bool first = true;
string res = "{";
for (const auto &x : v) {
if (!first) {
res += ", ";
}
first = false;
res += to_string(x);
}
res += "}";
return res;
}
void debug_out() {
cerr << endl;
}
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
cerr << " " << to_string(H);
debug_out(T...);
}
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__);
class edge {
public:
int a, b, w;
bool operator<(const edge& other) const {
return (w > other.w);
}
};
class dsu {
public:
vector<int> link, siz;
dsu(int n) : link(n), siz(n, 1) {
iota(link.begin(), link.end(), 0);
}
int who(int u) {
if (link[u] == u) {
return u;
}
return link[u] = who(link[u]);
}
bool unite(int u, int v) {
u = who(u); v = who(v);
if (u == v) {
return false;
}
if (siz[u] < siz[v]) {
swap(u, v);
}
siz[u] += siz[v]; link[v] = u;
return true;
}
};
const int inf = 1e9;
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n, m, q;
cin >> n >> m >> q;
vector<edge> edges(m);
for (int i = 0; i < m; i++) {
cin >> edges[i].a >> edges[i].b >> edges[i].w;
edges[i].a--; edges[i].b--;
}
sort(edges.begin(), edges.end());
dsu ds(n);
vector<vector<pair<int, int>>> g(n);
for (int i = 0; i < m; i++) {
if (ds.unite(edges[i].a, edges[i].b)) {
g[edges[i].a].push_back(make_pair(edges[i].b, edges[i].w));
g[edges[i].b].push_back(make_pair(edges[i].a, edges[i].w));
}
}
vector<int> ans(n, inf);
auto dfs = [&](auto&& self, int v, int pr) -> void {
for (auto [u, w] : g[v]) {
if (u != pr) {
ans[u] = min(ans[v], w);
self(self, u, v);
}
}
};
dfs(dfs, 0, -1);
for (int i = 0; i < q; i++) {
int x;
cin >> x;
cout << ans[--x] << '\n';
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
19 ms |
4440 KB |
Output is correct |
2 |
Correct |
16 ms |
3932 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
966 ms |
122004 KB |
Output is correct |
2 |
Correct |
1501 ms |
199292 KB |
Output is correct |