Submission #1201128

#	Time	Username	Problem	Language	Result	Execution time	Memory
1201128		hackstar	Finding Routers (IOI20_routers)	C++20	100 / 100	1 ms	584 KiB

routers

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

using namespace std;

vector<int> find_routers(int l, int n, int q) {
	vector<int>vis(l+10,-1);
	vector<int>ans(n);
	ans[0]=0;
	for(int i=1;i<n;i++){
		int lx=0,rx=l;
		int cur=lx;
		while(lx<rx){
			int m=lx+rx>>1;
			int id;
			if(~vis[m]){
				id=vis[m];
			}
			else{
				id=use_detector(m);
				vis[m]=id;
			}
			if(id<=i-1){
				cur=m;
				lx=m+1;
			}
			else{
				rx=m;
			}
		}
		cur*=2;
		cur-=ans[i-1];
		ans[i]=cur;
	}
	return ans;
}

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