Submission #1201696

#	Time	Username	Problem	Language	Result	Execution time	Memory
1201696		HappyCapybara	Finding Routers (IOI20_routers)	C++20	100 / 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){
  vector<int> res(1, 0);
  vector<int> his(n, l);
  for (int i=1; i<n; i++){
    int lo = res.back(), hi = his[i];
    while (lo < hi-1){
      int mid = (lo+hi)/2;
      int x = use_detector(mid);
      if (x >= i){
        hi = mid;
        for (int j=x; j>i; j--) his[j] = min(his[j], mid);
      }
      else lo = mid;
    }
    res.push_back(2*lo-res.back());
  }
  return res;
}

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