Submission #138842

#	Time	Username	Problem	Language	Result	Execution time	Memory
138842		muradeyn	Highway Tolls (IOI18_highway)	C++14	6 / 100	130 ms	2092 KiB

highway

#include "highway.h"
#include <bits/stdc++.h>
#define F first
#define S second
#define intt long long

using namespace std;

const int maxx = 100000;

vector<int>w;

void find_pair(int n, vector<int> u, vector<int> vv, int a, int b) {
	int m = u.size();
	w.resize(m , 0);
	intt ret = ask(w);
	intt len = ret / (1LL * a);
	int l = 0 , r = n - 1;
	while (r - l != len) {
		int mid = (l + r) >> 1;
		for (int i = l;i<mid;i++)w[i] = 0;
		for (int i = mid;i < r;i++)w[i] = 1;
		ret = ask(w);
		if (ret % len == 0 && ret / len == b) l = mid;
		else if (ret % len == 0 && ret / len == a) r = mid;
		else {
			for (int i = l;i<mid;i++) {
				intt res = 1LL * (mid - i) * a;
				res += 1LL * (len - (mid - i)) * b;
				if (res == ret) {
					l = i;
					r = i + len;
					break;
				}
			}
		}
	}
	answer(l , r);
}

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