結果
問題 | No.1121 Social Distancing in Cinema |
ユーザー | fuppy_kyopro |
提出日時 | 2020-07-22 23:46:37 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 8,418 bytes |
コンパイル時間 | 2,211 ms |
コンパイル使用メモリ | 203,624 KB |
実行使用メモリ | 13,120 KB |
最終ジャッジ日時 | 2024-06-23 01:56:22 |
合計ジャッジ時間 | 7,806 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
10,624 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 3 ms
5,376 KB |
testcase_11 | AC | 3 ms
5,376 KB |
testcase_12 | AC | 5 ms
5,376 KB |
testcase_13 | AC | 12 ms
5,376 KB |
testcase_14 | AC | 32 ms
5,376 KB |
testcase_15 | AC | 156 ms
5,888 KB |
testcase_16 | AC | 735 ms
13,120 KB |
testcase_17 | TLE | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
testcase_43 | -- | - |
testcase_44 | -- | - |
testcase_45 | -- | - |
testcase_46 | -- | - |
testcase_47 | -- | - |
testcase_48 | -- | - |
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); } bool solve1(int n, vector<set<int>> x2y, map<pii, int> xy2i, vector<pii> xy) { vi num(n); priority_queue<pii, vector<pii>, greater<pii>> pq; 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) return false; pii temp = pq.top(); pq.pop(); if (used[temp.second]) continue; int x = xy[temp.second].first, y = xy[temp.second].second; if (x2y[x].count(y) == 0) continue; used[temp.second] = true; k++; ans.push_back(temp.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[ans[i]].first, xy[ans[i]].second, xy[ans[j]].first, xy[ans[j]].second) < 100) assert(false); // } // } cout << k << endl; rep (i, ans.size()) cout << ans[i] + 1 << " "; cout << endl; return true; } bool solve2(int n, vector<set<int>> x2y, map<pii, int> xy2i, vector<pii> xy, bool x_flip, bool y_flip) { 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) { itr++; } else { if (ny <= y) itr++; else break; } } } } } // DEBUG_VEC(num); priority_queue<pii, vector<pii>, greater<pii>> pq; vector<bool> used(n); rep (i, n) { pii temp = xy[i]; if (x_flip) temp.first *= -1; if (y_flip) temp.second *= -1; pq.push(temp); } int k = 0; vi ans; while (k * 90 < n) { if (pq.size() == 0) return false; pii xy = pq.top(); pq.pop(); if (x_flip) xy.first *= -1; if (y_flip) xy.second *= -1; int idx = xy2i[xy]; if (used[idx]) continue; int x = xy.first, y = xy.second; if (x2y[x].count(y) == 0) continue; used[idx] = true; k++; ans.push_back(idx); 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; } } } } cout << k << endl; rep (i, ans.size()) cout << ans[i] + 1 << " "; cout << endl; return true; } signed main() { fio(); int n; cin >> n; vector<set<int>> x2y(501); map<pii, int> xy2i; vector<pii> xy; rep (i, n) { int x, y; cin >> x >> y; x2y[x].insert(y); xy2i[pii(x, y)] = i; xy.push_back(pii(x, y)); } if (solve1(n, x2y, xy2i, xy)) return 0; else { rep (i, 2) { rep (j, 2) { if (solve2(n, x2y, xy2i, xy, i, j)) return 0; } } } }