Submission #1230157

#	Time	Username	Problem	Language	Result	Execution time	Memory
1230157		djsksbrbf	Finding Routers (IOI20_routers)	C++20	0 / 100	1 ms	328 KiB

routers

#include "routers.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> find_routers(int l, int n, int q) {
	pair <long long, long long> p[n + 1];
	long long prev = 1;
	
	vector <long long> ans;
	for(int i = 0 ; i < n - 1 ; i++){
		long long l = prev, r = l;
		
		long long tmp = -1;
		while(l <= r){
			long long mid = (l + r) >> 1;
			if(use_detector(mid) != i)r = mid - 1;
			else{
				tmp = mid;
				l = mid + 1;
			}
		}
		
		p[i] = {prev, tmp};
		prev = tmp + 1;
	}
	
	p[n - 1] = {prev, l};
	vector <int> v;	v.push_back(0);
	
	for(int i = 1 ; i < n ; i++){
		pair <long long, long long> cur = p[i], prev = p[i - 1];
		long long prv = v.back();
		
		v.push_back(cur.first - prv + prev.second - 1);
	}
	
	return v;
}

• Subtask 1: 0 / 16
• Subtask 2: 0 / 21
• Subtask 3: 0 / 23
• Subtask 4: 0 / 40