Submission #1200143

#	Time	Username	Problem	Language	Result	Execution time	Memory
1200143		rayan_bd	Finding Routers (IOI20_routers)	C++20	77.94 / 100	4 ms	1096 KiB

routers

#include <bits/stdc++.h>
#include "routers.h"

using namespace std;


std::vector<int> find_routers(int l, int n, int q){
	vector<int> ans={0};
	map<int,int> seen;
	for(int i=0;i<n-1;++i){
		int st=ans.back()+1,en=l,cmid=0;
		while(st<=en){
			int mid=st+(en-st)/2;
			int curr=0;
			if(seen.count(mid)) curr=seen[mid];
			else curr=seen[mid]=use_detector(mid);
			if(curr==i){
				st=mid+1;
				cmid=mid;
			}else{
				en=mid-1;
			}
		}
		ans.push_back(cmid*2-ans.back());
	}
	return ans;
}

• Subtask 1: 16 / 16
• Subtask 2: 21 / 21
• Subtask 3: 23 / 23
• Subtask 4: 17.9392 / 40