제출 #103762

#제출 시각아이디문제언어결과실행 시간메모리
103762Osama_Alkhodairy게임 (IOI14_game)C++17
0 / 100
2 ms384 KiB
#include <bits/stdc++.h> #include "game.h" //#include "grader.h" //#include "grader.cpp" using namespace std; const int N = 1501; int n, dsu[N], ok[N][N], sz[N]; vector <vector <int> > cnt; int find(int x){ if(dsu[x] == x) return x; return dsu[x] = find(dsu[x]); } void initialize(int nn){ n = nn; cnt.assign(n, vector <int>(n, 0)); for(int i = 0 ; i < n ; i++) dsu[i] = i; for(int i = 0 ; i < n ; i++){ for(int j = i + 1 ; j < n ; j++){ ok[i][j] = ok[j][i] = 1; } } } void merge(int x, int y){ sz[x] += sz[y]; dsu[y] = x; for(int i = 0 ; i < n ; i++) cnt[x][i] += cnt[y][i]; for(int i = 0 ; i < n ; i++){ if(find(i) == i && i != x){ ok[i][x] = ok[x][i] = sz[x] * sz[i]; } } for(int i = 0 ; i < n ; i++){ int r = find(i); if(r == x) continue; ok[x][r] -= cnt[x][i]; ok[r][x] -= cnt[x][i]; } } int hasEdge(int u, int v){ int x = find(u); int y = find(v); if(x == y) return 1; ok[x][y]--; ok[y][x]--; cnt[x][y]++; cnt[y][x]++; if(ok[x][y] == 0){ merge(x, y); return 1; } return 0; }
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