Submission #423649

#	Time	Username	Problem	Language	Result	Execution time	Memory
423649		Tangent	Highway Tolls (IOI18_highway)	C++17	6 / 100	127 ms	2156 KiB

highway

#include "highway.h"
#include "bits/stdc++.h"

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vii;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;
typedef vector<vii> vvii;
typedef vector<vll> vvll;
typedef vector<vpii> vvpii;
typedef vector<vpll> vvpll;

#define ffor(i, a, b) for (ll i = a; i < b; i++)
#define rep(i, n) ffor(i, 0, n)
#define forin(x, a) for (auto &x: a)
#define all(a) a.begin(), a.end()

void find_pair(int N, std::vector<int> U, std::vector<int> V, int A, int B) {
  int M = U.size();
  ll dist = ask(vii(M)) / A;
  int lo = 0, hi = N - 1 - dist;
  vii query(M);
  while (lo < hi) {
    int mid = (lo + hi) / 2;
    for (int x = mid; x >= 0; x-= dist) {
      query[x] = 1;
    }
    if (ask(query) > dist * A) {
      hi = mid;
    } else {
      lo = mid + 1;
    }
    for (int x = mid; x >= 0; x-= dist) {
      query[x] = 0;
    }
  }

  answer(lo, lo + dist);
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 7
• Subtask 3: 6 / 6
• Subtask 4: 0 / 33
• Subtask 5: 0 / 18
• Subtask 6: 0 / 31