제출 #106472

#제출 시각아이디문제언어결과실행 시간메모리
106472tincamatei게임 (IOI14_game)C++14
100 / 100
712 ms15992 KiB
#include "game.h" const int MAX_N = 1500; int sef[MAX_N]; int edges[MAX_N][MAX_N]; int size[MAX_N]; int N; int myfind(int x) { if(x == sef[x]) return x; sef[x] = myfind(sef[x]); return sef[x]; } void myunion(int a, int b) { int sa, sb; sa = myfind(a); sb = myfind(b); sef[sb] = sa; if(sa != sb) { edges[sa][sb] = edges[sb][sa] = 0; for(int i = 0; i < N; ++i) { edges[sa][i] += edges[sb][i]; edges[i][sa] += edges[i][sb]; } size[sa] += size[sb]; } } void initialize(int n) { N = n; for(int i = 0; i < n; ++i) { sef[i] = i; size[i] = 1; } } int hasEdge(int u, int v) { int su, sv; su = myfind(u); sv = myfind(v); edges[su][sv]++; edges[sv][su]++; if(edges[su][sv] == size[su] * size[sv]) { myunion(su, sv); return 1; } else return 0; }
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