結果
| 問題 |
No.1121 Social Distancing in Cinema
|
| コンテスト | |
| ユーザー |
fuppy_kyopro
|
| 提出日時 | 2020-07-22 23:12:24 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 5,768 bytes |
| コンパイル時間 | 2,244 ms |
| コンパイル使用メモリ | 196,960 KB |
| 実行使用メモリ | 27,852 KB |
| 最終ジャッジ日時 | 2024-06-23 00:45:11 |
| 合計ジャッジ時間 | 8,110 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | -- * 2 |
| other | AC * 13 WA * 4 TLE * 1 -- * 29 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define DEBUG(x) cerr<<#x<<": "<<x<<endl;
#define DEBUG_VEC(v) cerr<<#v<<":";for(int i=0;i<v.size();i++) cerr<<" "<<v[i]; cerr<<endl;
#define DEBUG_MAT(v) cerr<<#v<<endl;for(int i=0;i<v.size();i++){for(int j=0;j<v[i].size();j++) {cerr<<v[i][j]<<" ";}cerr<<endl;}
typedef long long ll;
#define int ll
#define vi vector<int>
#define vl vector<ll>
#define vii vector< vector<int> >
#define vll vector< vector<ll> >
#define vs vector<string>
#define pii pair<int,int>
#define pis pair<int,string>
#define psi pair<string,int>
#define pll pair<ll,ll>
template<class S, class T> pair<S, T> operator+(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first + t.first, s.second + t.second); }
template<class S, class T> pair<S, T> operator-(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first - t.first, s.second - t.second); }
template<class S, class T> ostream& operator<<(ostream& os, pair<S, T> p) { os << "(" << p.first << ", " << p.second << ")"; return os; }
#define X first
#define Y second
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep1(i,n) for(int i=1;i<=(int)(n);i++)
#define rrep(i,n) for(int i=(int)(n)-1;i>=0;i--)
#define rrep1(i,n) for(int i=(int)(n);i>0;i--)
#define REP(i,a,b) for(int i=a;i<b;i++)
#define in(x, a, b) (a <= x && x < b)
#define all(c) c.begin(),c.end()
template<class T> bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b) { if (a>b) { a = b; return 1; } return 0; }
#define UNIQUE(v) v.erase(std::unique(v.begin(), v.end()), v.end());
const ll inf = 1000000001;
const ll INF = (ll)1e18 + 1;
const long double pi = 3.1415926535897932384626433832795028841971L;
#define Sp(p) cout<<setprecision(25)<< fixed<<p<<endl;
// int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
// int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 };
vi dx = {1, 0, -1, 0}, dy = {0, 1, 0, -1};
// vi dx2 = { 1,1,0,-1,-1,-1,0,1 }, dy2 = { 0,1,1,1,0,-1,-1,-1 };
#define fio() cin.tie(0); ios::sync_with_stdio(false);
const ll MOD = 1000000007;
// const ll MOD = 998244353;
// #define mp make_pair
//#define endl '\n'
int dist(int x, int y, int nx, int ny) {
return (x - nx) * (x - nx) + (y - ny) * (y - ny);
}
signed main() {
fio();
int n;
cin >> n;
vector<set<int>> x2y(501);
map<pii, int> xy2i;
vector<pii> xy;
vi num(n);
priority_queue<pii, vector<pii>, greater<pii>> pq;
rep (i, n) {
int x, y;
cin >> x >> y;
x2y[x].insert(y);
xy2i[pii(x, y)] = i;
xy.push_back(pii(x, y));
}
rep (x, 501) {
for (auto itr = x2y[x].begin(); itr != x2y[x].end(); itr++) {
int y = *itr;
for (int add = -9; add <= 9; add++) {
int nx = x + add;
if (not in(nx, 0, 501)) continue;
auto itr = x2y[nx].lower_bound(y - 9);
while (true) {
if (itr == x2y[nx].end()) break;
int ny = *itr;
if (dist(x, y, nx, ny) < 100) {
num[xy2i[pii(x, y)]]++;
itr++;
}
else {
if (ny <= y) itr++;
else break;
}
}
}
}
}
// DEBUG_VEC(num);
vector<bool> used(n);
rep (i, n) pq.push(pii(num[i], i));
int k = 0;
vi ans;
while (k * 90 < n) {
if (pq.size() == 0) assert(false);
pii temp = pq.top();
pq.pop();
if (used[temp.second]) continue;
used[temp.second] = true;
k++;
ans.push_back(temp.second);
int x = xy[temp.second].first, y = xy[temp.second].second;
vector<pii> era_xy;
for (int add = -9; add <= 9; add++) {
int nx = x + add;
if (not in(nx, 0, 501)) continue;
auto itr = x2y[nx].lower_bound(y - 9);
while (true) {
if (itr == x2y[nx].end()) break;
int ny = *itr;
if (dist(x, y, nx, ny) < 100) {
x2y[nx].erase(itr);
itr = x2y[nx].lower_bound(ny);
era_xy.push_back(pii(nx, ny));
}
else {
if (ny <= y) itr++;
else break;
}
}
}
set<pii> xxyy;
rep (i, era_xy.size()) {
int x = era_xy[i].first, y = era_xy[i].second;
for (int add = -9; add <= 9; add++) {
int nx = x + add;
if (not in(nx, 0, 501)) continue;
auto itr = x2y[nx].lower_bound(y - 9);
while (true) {
if (itr == x2y[nx].end()) break;
int ny = *itr;
if (dist(x, y, nx, ny) < 100) {
num[xy2i[pii(nx, ny)]]--;
xxyy.insert(pii(nx, ny));
itr++;
}
else {
if (ny <= y) itr++;
else break;
}
}
}
}
for (auto itr = xxyy.begin(); itr != xxyy.end(); itr++) {
int x = itr->first, y = itr->second;
int idx = xy2i[pii(x, y)];
pq.push(pii(num[idx], idx));
}
}
// rep (i, ans.size()) {
// for (int j = i + 1; j < ans.size(); j++) {
// if (dist(xy[i].first, xy[i].second, xy[j].first, xy[j].second) < 100
// }
// }
cout << k << endl;
rep (i, ans.size()) cout << ans[i] + 1 << " ";
cout << endl;
}
fuppy_kyopro