제출 #588038

#제출 시각아이디문제언어결과실행 시간메모리
588038Clan328분수 공원 (IOI21_parks)C++17
0 / 100
0 ms212 KiB
#include "parks.h" #include <bits/stdc++.h> using namespace std; #define pb push_back struct Coord { int x, y, i; bool operator<(Coord other) const { if (y == other.y) { return x < other.x; } return y < other.y; } }; int construct_roads(std::vector<int> x, std::vector<int> y) { if (x.size() == 1) { build({}, {}, {}, {}); return 1; } std::vector<int> u, v, a, b; int n = x.size(); vector<pair<int, int>> yi(n); vector<Coord> coords(n); for (int i = 0; i < n; i++) { coords[i] = {x[i], y[i], i}; } sort(coords.begin(), coords.end()); bool res = true; for (int i = 0; i < n-1; i++) { if (coords[i].y+2 < coords[i+1].y) res = false; if (coords[i].x == coords[i+1].x) { u.pb(coords[i].i); v.pb(coords[i+1].i); a.pb(coords[i].x+1); b.pb(coords[i].y+1); } else if (coords[i].y == coords[i+1].y) { u.pb(coords[i].i); v.pb(coords[i+1].i); a.pb(coords[i].x+1); b.pb(coords[i].y-1); } if (i+2 < n) { if (coords[i].x == coords[i+2].x) { u.pb(coords[i].i); v.pb(coords[i+2].i); a.pb(coords[i].x+1); b.pb(coords[i].y+1); } else if (coords[i].y == coords[i+2].y) { u.pb(coords[i].i); v.pb(coords[i+2].i); a.pb(coords[i].x+1); b.pb(coords[i].y-1); } } // res &= yi[i].first+2 == yi[i+1].first; // u.pb(yi[i].second); // v.pb(yi[i+1].second); // a.pb(3); // b.pb(yi[i].first+1); } if (!res) return 0; // int maxY = 0; // for (int i = 0; i < y.size(); i++) maxY = max(maxY, y[i]); // vvi mat(maxY/2-1, vi(3)), matIdx(maxY/2-1, vi(3)); // for (int i = 0; i < x.size(); i++) { // mat[x[i]/2-1][y[i]/2-1] = 1; // matIdx[x[i]/2-1][y[i]/2-1] = i; // } build(u, v, a, b); return 1; }
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