제출 #360951

#제출 시각아이디문제언어결과실행 시간메모리
360951jesus_coconut게임 (IOI14_game)C++17
100 / 100
558 ms25436 KiB
#include <bits/stdc++.h> #include "game.h" using namespace std; int n; struct DSU { vector<int> par, rank, setsize; int numsets; vector<vector<int>> con; explicit DSU(int n) { par.assign(n, 0); iota(begin(par), end(par), 0); rank.assign(n, 0); setsize.assign(n, 1); con.assign(n, vector<int>(n)); numsets = n; } int findSet(int x) { return (par[x] == x) ? x : (par[x] = findSet(par[x])); } bool sameSet(int x, int y) { return findSet(x) == findSet(y); } bool unite(int x, int y) { if (sameSet(x, y)) return false; x = findSet(x), y = findSet(y); if (rank[x] > rank[y]) swap(x, y); par[x] = y; for (int i = 0; i < n; ++i) { con[y][i] += con[x][i]; con[i][y] = con[y][i]; } if (rank[x] == rank[y]) ++rank[y]; setsize[y] += setsize[x]; --numsets; return true; } }; DSU dsu(1); void initialize(int n) { ::n = n; dsu = DSU(n); } int hasEdge(int u, int v) { int a = dsu.findSet(u); int b = dsu.findSet(v); dsu.con[a][b]++; dsu.con[b][a]++; if (dsu.con[a][b] == dsu.setsize[a] * dsu.setsize[b]) { dsu.unite(a, b); return 1; } else { return 0; } }
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