結果
| 問題 |
No.94 圏外です。(EASY)
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-06-28 21:32:48 |
| 言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
| 結果 |
WA
(最新)
CE
(最初)
|
| 実行時間 | - |
| コード長 | 4,835 bytes |
| コンパイル時間 | 12,181 ms |
| コンパイル使用メモリ | 283,360 KB |
| 最終ジャッジ日時 | 2025-01-05 00:54:08 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 5 WA * 17 |
コンパイルメッセージ
main.cpp: In member function '{anonymous}::MaiScanner& {anonymous}::MaiScanner::operator>>(std::string&)':
main.cpp:72:9: warning: no return statement in function returning non-void [-Wreturn-type]
72 | }
| ^
ソースコード
#pragma GCC optimize ("O3")
#pragma GCC target ("avx")
#include "bits/stdc++.h" // define macro "/D__MAI"
using namespace std;
typedef long long int ll;
#define debugv(v) printf("L%d %s => ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;
#define debugm(m) printf("L%d %s is..\n",__LINE__,#m);for(auto v:m){for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) printf("L%d %s is => ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;
#define debugaa(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[x][y]<<" ";}cout<<endl;}
#define debugaar(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;}
#define ALL(v) (v).begin(),(v).end()
#define repeat(l) for(auto cnt=0;cnt<(l);++cnt)
#define iterate(b,e) for(auto cnt=(b);cnt!=(e);++cnt)
#define MD 1000000007ll
#define PI 3.1415926535897932384626433832795
template<typename T1, typename T2>
ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; }
#define TIME chrono::system_clock::now()
#define MILLISEC(t) (chrono::duration_cast<chrono::milliseconds>(t).count())
namespace {
std::chrono::system_clock::time_point ttt;
void tic() { ttt = TIME; }
void toc() { fprintf(stderr, "TIME : %lldms\n", MILLISEC(TIME - ttt)); }
std::chrono::system_clock::time_point tle = TIME;
#ifdef __MAI
void safe_tle(int msec) { assert(MILLISEC(TIME - tle) < msec); }
#else
#define safe_tle(k) ;
#endif
}
#ifdef __MAI
#define getchar_unlocked getchar
#define putchar_unlocked putchar
#endif
#ifdef __VSCC
#define getchar_unlocked _getchar_nolock
#define putchar_unlocked _putchar_nolock
#endif
namespace {
#define isvisiablechar(c) (0x21<=(c)&&(c)<=0x7E)
class MaiScanner {
public:
template<typename T>
void input_integer(T& var) {
var = 0;
T sign = 1;
int cc = getchar_unlocked();
for (; cc<'0' || '9'<cc; cc = getchar_unlocked())
if (cc == '-') sign = -1;
for (; '0' <= cc&&cc <= '9'; cc = getchar_unlocked())
var = (var << 3) + (var << 1) + cc - '0';
var = var*sign;
}
inline int c() { return getchar_unlocked(); }
inline MaiScanner& operator>>(int& var) {
input_integer<int>(var);
return *this;
}
inline MaiScanner& operator>>(long long& var) {
input_integer<long long>(var);
return *this;
}
inline MaiScanner& operator>>(string& var) {
int cc = getchar_unlocked();
for (; !isvisiablechar(cc); cc = getchar_unlocked());
for (; isvisiablechar(cc); cc = getchar_unlocked())
var.push_back(cc);
}
};
}
MaiScanner scanner;
class qunionfind {
public:
vector<vector<int>> toItems;
vector<int> data;
qunionfind(int size) : data(size, -1) {
toItems.resize(size);
for (int i = 0; i<size; i++) {
toItems[i].emplace_back(i);
}
}
bool union_set(int x, int y) {
x = root(x); y = root(y);
if (x != y) {
if (data[y] < data[x]) swap(x, y);
toItems[x].insert(toItems[x].end(), ALL(toItems[y]));
data[x] += data[y]; data[y] = x;
}
return x != y;
}
inline bool find_set(int x, int y) {
return root(x) == root(y);
}
inline int root(int x) {
return data[x] < 0 ? x : data[x] = root(data[x]);
}
inline int size(int x) {
return -data[root(x)];
}
};
int n;
ll pos[1010][2];
inline ll hypo(ll x, ll y) { return x*x + y*y; }
int main() {
scanner >> n;
if (n == 0) {
cout << 1 << endl;
return 0;
}
repeat(n) {
int x, y;
scanner >> x >> y;
pos[cnt][0] = x;
pos[cnt][1] = y;
}
// vector<pair<double, int>> edges;
// edges.reserve(n*(n + 1) / 2 + 10);
qunionfind uf(n);
for (int i = 0; i < n-1; ++i) {
ll x = pos[i][0];
ll y = pos[i][1];
for (int j = i+1; j < n; ++j) {
if (hypo(x - pos[j][0], y - pos[j][1]) <= 100) {
uf.union_set(i, j);
}
}
}
ll best = 0;
vector<int> visit(n);
for (int t = 0; t < n; ++t) {
int head = uf.root(t);
if (visit[head]) continue;
visit[head] = 1;
const vector<int>& items = uf.toItems[head];
int m = items.size();
for (int i = 0; i < m - 1; ++i) {
for (int j = 1 + i; j < m; ++j) {
best = max(hypo(pos[i][0] - pos[j][0], pos[i][0] - pos[j][1]), best);
}
}
}
printf("%.10f\n", sqrt(best) + 2);
return 0;
}