Submission #35892

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
35892	2017-12-02 05:35:16	funcsr	One-Way Streets (CEOI17_oneway)	C++14	100 / 100	363 ms	23852 KiB

oneway

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#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>
#define pb push_back
#define all(xs) xs.begin(), xs.end()
#define rep(i, n) for (int i=0; i<(n); i++)
using namespace std;
typedef pair<int, int> P;
#define _1 first
#define _2 second
struct UnionFind {
  int N;
  vector<int> U, R;
  UnionFind(int N) : N(N), U(N), R(N) {
    rep(i, N) U[i] = i, R[i] = 1;
  }
  int find(int x) {
    if (U[x] == x) return x;
    return U[x] = find(U[x]);
  }
  void unite(int x, int y) {
    x = find(x), y = find(y);
    if (x == y) return;
    if (R[x] < R[y]) swap(x, y);
    U[y] = x;
    R[x] += R[y];
  }
};
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40