#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#pragma GCC optimization("g", on)
#pragma GCC optimization("03")
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse,-fgcse-lm")
#pragma GCC optimize("-ftree-pre,-ftree-vrp")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#pragma GCC optimize("unroll-loops")
#define boba ios_base::sync_with_stdio(false); cin.tie(NULL);
#define br break
#define sp " "
#define en "\n"
#define pb push_back
#define sz size()
#define bg begin()
#define ed end()
#define in insert
#define ss second
#define ff first
#define rbg rbegin()
#define setp(a) cout << fixed; cout << setprecision(a);
#define all(v) v.begin(), v.end()
#define emp empty()
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef double db;
typedef tree<
long long,
null_type,
less_equal<long long>,
rb_tree_tag,
tree_order_statistics_node_update> orset;
void freopen(string s) { freopen((s + ".in").c_str(), "r", stdin); freopen((s + ".out").c_str(), "w", stdout); }
ll bp(ll x, ll y, ll z) { ll res = 1; while (y) { if (y & 1) { res = (res * x) % z; y--; } x = (x * x) % z; y >>= 1; } return res; }
// C(n, k) = ((fact[n] * bp(fact[k], mod - 2)) % mod * bp(fact[n - k], mod - 2)) % mod;
ll lcm(ll a, ll b) { return (a / __gcd(a, b)) * b; }
const ll N = 5e4 + 11;
const ll inf = 1e9 + 7;
ll tt = 1;
vector<pll> g[N];
ll d[N], pr[N];
ll up[N][17];
void dfs(ll v, ll p) {
up[v][0] = p;
for (int i = 1;i <= 16;i++) up[v][i] = up[up[v][i - 1]][i - 1];
for (auto to : g[v]) {
if (to.ff != p) {
d[to.ff] = d[v] + 1;
pr[to.ff] = pr[v] + to.ss;
// cout << d[to.ff] << sp << pr[d[to.ff]] << sp << to.ff << sp << v << en;
dfs(to.ff, v);
}
}
}
ll lca(ll x, ll y) {
// cout << x << sp << y << en;
if (d[x] < d[y]) swap(x, y);
ll k = d[x] - d[y];
for (int i = 0;i < 17;i++) {
if (k & (1 << i)) {
x = up[x][i];
}
}
if (x == y) return x;
for (int i = 0;i < 17;i++) {
if (up[x][i] != up[y][i]) {
x = up[x][i];
y = up[y][i];
}
}
return up[x][0];
}
void solve() {
ll n; cin >> n;
for (int i = 1;i < n;i++) {
ll u, v, w; cin >> u >> v >> w;
u++, v++;
g[u].pb({v, w});
g[v].pb({u, w});
}
ll rt = 0;
// for (int i = 1;i <= n;i++) {
// if (g[i].sz == 1) {
// d[i] = 1;
// rt = i;
// dfs(i, 0);
// br;
// }
// }
dfs(1, 0);
// cout << rt << en;
ll q; cin >> q;
while (q--) {
ll b[6], ans[6];
ll lc = 0;
vector<pll> v;
v.clear();
bool u[6];
for (int i = 1;i <= 5;i++) {
u[i] = 0;
ans[i] = 0;
cin >> b[i];
b[i]++;
if (i == 1) {
lc = b[1];
}
if (i > 1) {
lc = lca(lc, b[i]);
}
v.pb({d[b[i]], b[i]});
}
sort(v.bg, v.ed);
reverse(v.bg, v.ed);
for (int i = 2;i <= 5;i++) {
ll x = v[i - 1].ss;
for (int j = 1;j < i;j++) {
if (lca(x, v[j - 1].ss) == x && !u[j]) {
ans[i] += ans[j];
ll dis = pr[v[j - 1].ss] - pr[x];
ans[i] += dis;
// cout << x << sp << i << sp << j << sp << v[j - 1].ss << sp << ans[i] << en;
u[j] = 1;
}
}
}
ll res = 0;
for (int j = 1;j <= 5;j++) {
if (!u[j]) {
res += ans[j];
ll dis = pr[v[j - 1].ss] - pr[lc];
res += dis;
}
}
cout << res << en;
}
}
int main() {
boba
// freopen("ladder");
// precalc();
// cin >> tt;
for (int i = 1;i <= tt;i++) {
solve();
}
}
Compilation message
roadsideadverts.cpp:7: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
7 | #pragma GCC optimization("g", on)
|
roadsideadverts.cpp:8: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
8 | #pragma GCC optimization("03")
|
roadsideadverts.cpp:9: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
9 | #pragma comment(linker, "/stack:200000000")
|
roadsideadverts.cpp: In function 'void solve()':
roadsideadverts.cpp:101:5: warning: unused variable 'rt' [-Wunused-variable]
101 | ll rt = 0;
| ^~
roadsideadverts.cpp: In function 'void freopen(std::string)':
roadsideadverts.cpp:49:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
49 | void freopen(string s) { freopen((s + ".in").c_str(), "r", stdin); freopen((s + ".out").c_str(), "w", stdout); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
roadsideadverts.cpp:49:75: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
49 | void freopen(string s) { freopen((s + ".in").c_str(), "r", stdin); freopen((s + ".out").c_str(), "w", stdout); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
1492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
61 ms |
13400 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
19 ms |
11452 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
1492 KB |
Output is correct |
| 2 |
Incorrect |
61 ms |
13400 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
