제출 #241719

#제출 시각아이디문제언어결과실행 시간메모리
241719Coroian_David게임 (IOI14_game)C++11
100 / 100
591 ms25336 KiB
#include <bits/stdc++.h> #include "game.h" #define MAX_N 1500 using namespace std; /* int ap[MAX_N + 1]; int pos[MAX_N + 1][MAX_N + 1]; int p2[MAX_N + 1][MAX_N + 1]; */ int N; int comp[MAX_N + 1]; int h[MAX_N + 1]; int dp[MAX_N + 1][MAX_N + 1]; void initialize(int n) { for(int i = 1; i <= n; i ++) { comp[i] = i; h[i] = 1; for(int j = 1; j <= n; j ++) { if(i != j) dp[i][j] = 1; } } N = n; return; /* for(int i = 1; i <= n; i ++) { ap[i] = n - 1; for(int j = 1; j <= n; j ++) { if(i != j) { pos[i][j] = 1; p2[i][j] = 1; } } }*/ } /* void verif(int a) { int n = N; if(ap[a] != 1) return; //cout << "BAGAM LA " << a << "\n"; for(int i = 1; i <= n; i ++) { if(i != a && ap[i] > 0 && pos[a][i] == 1) { // cout << "SE COMBINA CU " << i << "\n"; pos[a][i] = pos[i][a] = 2; ap[i] --; ap[a] --; verif(i); return; } } } int viz[MAX_N + 1]; int cr, cnt; void dfs(int a) { cnt ++; viz[a] = cr; for(int i = 1; i <= N; i ++) { if(i != a && p2[i][a] == 1 && viz[i] < cr) { dfs(i); } } } int brut(int u, int v) { p2[u][v] = p2[v][u] = 0; cr ++; cnt = 0; dfs(u); int rez = 0; if(cnt < N) rez = 1; p2[v][u] = p2[u][v] = rez; return rez; } */ int getComp(int a) { return (comp[a] = (comp[a] == a ? a : getComp(comp[a]))); } void uneste(int a, int b) { if(h[a] < h[b]) swap(a, b); comp[b] = a; h[a] += (h[a] == h[b]); int n = N; for(int i = 1; i <= n; i ++) { int x = getComp(i); if(x != a) { dp[x][a] += dp[x][b]; dp[x][b] = 0; dp[a][x] += dp[b][x]; dp[b][x] = 0; } } } int hasEdge(int u, int v) { u ++; v ++; int ca = getComp(u); int cb = getComp(v); if(ca == cb) { return 0; } else { if(dp[ca][cb] == 1) { uneste(ca, cb); return 1; } else { dp[ca][cb] --; dp[cb][ca] --; return 0; } } return 0; /* int r2 = brut(u, v); if(r2 != rez) { cout << ap[v] << " " << ap[u] << "\n"; cout << " POS " << pos[u][v] << " " << pos[v][u] << " \n"; cout << " SUINTEM ACOACOAL L O " << u << " " << v << " " << cnt << " " << cr << " si trebuie " << r2 << " iese " << rez << "\n"; } assert(r2 == rez); return rez;*/ }
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