Submission #950720

#	Time	Username	Problem	Language	Result	Execution time	Memory
950720		kilkuwu	Game (IOI14_game)	C++17	100 / 100	314 ms	26632 KiB

game

#ifdef LOCAL
#ifndef _GAME_H
#define _GAME_H

void initialize(int n);
int hasEdge(int u, int v);

#include <cstdio>
#include <cassert>
#include "game.h"

int read_int() {
    int x;
    assert(scanf("%d", &x) == 1);
    return x;
}

int main() {
    int n, u, v;
    n = read_int();
    initialize(n);
    for (int i = 0; i < n * (n - 1) / 2; i++) {
        u = read_int();
        v = read_int();
        printf("%d\n", hasEdge(u, v));
    }
    return 0;
}

#endif
#else 
#include "game.h"
#endif

#include <bits/stdc++.h>

const int mxN = 1500;
int s[mxN][mxN];
int n;

std::vector<int> r[mxN];
int f[mxN];


void initialize(int _n) {
  n = _n;
  for (int i = 0; i < n; i++) {
    r[i].push_back(i);
    f[i] = i;
  }

  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      if (i != j) s[i][j] = 1;
    }
  }
}

#ifdef LOCAL
#include "template\debug.hpp"
#else
#define dbg(...) ;
#define timer(...) ;
#endif

int hasEdge(int u, int v) {
  int a = f[u], b = f[v];
  dbg(a, b);
  // let's delete this
  s[a][b]--;
  s[b][a]--;
  if (s[a][b] >= 1) {
    return 0;
  }

  // we move em

  // move from one to another


  for (int i : r[b]) {
    r[a].push_back(i);
    f[i] = a;
  }

  for (int i = 0; i < n; i++) {
    if (i != a) {
      s[a][i] += s[b][i];
      s[i][a] += s[b][i];
    }
    s[b][i] = s[i][b] = 0;
  }

  dbg(std::vector<int>(f, f + n));
  for (int i = 0; i < n; i++) {
    dbg(std::vector<int>(s[i], s[i] + n));
  }

  return 1;
}

• Subtask 1: 15 / 15
• Subtask 2: 27 / 27
• Subtask 3: 58 / 58