結果

問題 No.2179 Planet Traveler
ユーザー au7777
提出日時 2023-01-26 14:33:29
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
WA  
実行時間 -
コード長 3,256 bytes
コンパイル時間 4,103 ms
コンパイル使用メモリ 241,548 KB
実行使用メモリ 6,940 KB
最終ジャッジ日時 2024-06-27 08:52:00
合計ジャッジ時間 6,346 ms
ジャッジサーバーID
(参考情報)
judge2 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 25 WA * 1
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
#include <atcoder/all>
typedef long long int ll;
using namespace std;
typedef pair<ll, ll> P;
using namespace atcoder;
template<typename T> using min_priority_queue = priority_queue<T, vector<T>, greater<T>>;
#define USE998244353
#ifdef USE998244353
const ll MOD = 998244353;
using mint = modint998244353;
#else
const ll MOD = 1000000007;
using mint = modint1000000007;
#endif
const int MAX = 2000005;
long long fac[MAX], finv[MAX], inv[MAX];
void COMinit() {
fac[0] = fac[1] = 1;
finv[0] = finv[1] = 1;
inv[1] = 1;
for (int i = 2; i < MAX; i++){
fac[i] = fac[i - 1] * i % MOD;
inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
finv[i] = finv[i - 1] * inv[i] % MOD;
}
}
long long COM(int n, int k){
if (n < k) return 0;
if (n < 0 || k < 0) return 0;
return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
ll gcd(ll x, ll y) {
if (y == 0) return x;
else if (y > x) {
return gcd (y, x);
}
else return gcd(x % y, y);
}
ll lcm(ll x, ll y) {
return x / gcd(x, y) * y;
}
ll my_sqrt(ll x) {
//
ll m = 0;
ll M = 3000000001;
while (M - m > 1) {
ll now = (M + m) / 2;
if (now * now <= x) {
m = now;
}
else {
M = now;
}
}
return m;
}
ll keta(ll num, ll arity) {
ll ret = 0;
while (num) {
num /= arity;
ret++;
}
return ret;
}
ll ceil(ll n, ll m) {
// n > 0, m > 0
ll ret = n / m;
if (n % m) ret++;
return ret;
}
ll pow_ll(ll x, ll n) {
if (n == 0) return 1;
if (n % 2) {
return pow_ll(x, n - 1) * x;
}
else {
ll tmp = pow_ll(x, n / 2);
return tmp * tmp;
}
}
vector<ll> compress(vector<ll>& v) {
// [3 5 5 6 1 1 10 1] -> [1 2 2 3 0 0 4 0]
vector<ll> u = v;
sort(u.begin(), u.end());
u.erase(unique(u.begin(),u.end()),u.end());
map<ll, ll> mp;
for (int i = 0; i < u.size(); i++) {
mp[u[i]] = i;
}
for (int i = 0; i < v.size(); i++) {
v[i] = mp[v[i]];
}
return v;
}
ll dis(ll x1, ll y1) {
return x1 * x1 + y1 * y1;
}
bool canGo(ll x1, ll y1, ll x2, ll y2, ll s) {
ll sqDis1 = dis(x1, y1);
ll sqDis2 = dis(x2, y2);
return abs(sqrt(sqDis1) - sqrt(sqDis2)) <= sqrt(s);
}
int main() {
int n;
cin >> n;
ll x[n];
ll y[n];
ll t[n];
for (int i = 0; i < n; i++) cin >> x[i] >> y[i] >> t[i];
ll M = (ll)1e10;
ll m = -1;
while (M - m > 1) {
ll mid = (M + m) / 2;
// check if we can go to n-th planet in level of mid
dsu d(n);
for (int i = 0; i < n; i++) {
for (int j = i + 1; j < n; j++) {
if (t[i] == t[j]) {
if (dis(x[i] - x[j], y[i] - y[j]) <= mid) {
d.merge(i, j);
}
}
else {
if (canGo(x[i], y[i], x[j], y[j], mid)) {
d.merge(i, j);
}
}
}
}
if (d.same(0, n - 1)) {
// can go with level mid
M = mid;
}
else {
m = mid;
}
}
cout << M << endl;
return 0;
}
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