제출 #169446

#제출 시각아이디문제언어결과실행 시간메모리
169446AlexLuchianov게임 (IOI14_game)C++14
100 / 100
497 ms25188 KiB
#include "game.h" using ll = long long; #define MIN(a, b) (((a) < (b)) ? (a) : (b)) #define MAX(a, b) (((a) < (b)) ? (b) : (a)) int const nmax = 1500; int coef[1 + nmax][1 + nmax]; int n; namespace Dsu{ int mult[1 + nmax]; int sz[1 + nmax]; void init(){ for(int i = 0;i < n; i++) mult[i] = i; for(int i = 0;i < n; i++) sz[i] = 1; } int jump(int gala){ if(mult[gala] != gala) mult[gala] = jump(mult[gala]); return mult[gala]; } void unite(int gala, int galb){ gala = jump(gala); galb = jump(galb); sz[galb] += sz[gala]; for(int i = 0; i < n; i++) coef[i][galb] += coef[i][gala]; for(int i = 0; i < n; i++) coef[galb][i] += coef[gala][i]; mult[gala] = galb; } } void initialize(int n_) { n = n_; Dsu::init(); } int hasEdge(int u, int v) { u = Dsu::jump(u); v = Dsu::jump(v); coef[u][v]++; coef[v][u]++; if(Dsu::sz[u] * Dsu::sz[v] == coef[u][v]) { Dsu::unite(u, v); return 1; } else return 0; }
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