제출 #1087442

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1087442		juicy	보물 찾기 (CEOI13_treasure2)	C++17	26 / 100	1 ms	616 KiB

treasure

#include "treasure.h"

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

vector<array<int, 2>> res;

void rec(int a, int b, int c, int d, int cnt, bool r) {
  if (!cnt) {
    return;
  }
  if (tie(a, b) == tie(c, d)) {
    res.push_back({a, b});
    return;
  }
  if (r && a != c) {
    int m = (a + c) / 2;
    int x = countTreasure(a, b, m, d);
    if (x) {
      rec(a, b, m, d, x, r ^ 1);
    }
    if (x < cnt) {
      rec(m + 1, b, c, d, cnt - x, r ^ 1);
    }
  } else {
    int m = (b + d) / 2;
    int x = countTreasure(a, b, c, m);
    if (x) {
      rec(a, b, c, m, x, r ^ 1);
    }
    if (x < cnt) {
      rec(a, m + 1, c, d, cnt - x, r ^ 1);
    } 
  }
}

void findTreasure (int n) {
  rec(1, 1, n, n, countTreasure(1, 1, n, n), rng() % 2);
  for (auto [x, y] : res) {
    Report(x, y);
  }
}

• Subtask 1: 26 / 100