Submission #225793

#	Time	Username	Problem	Language	Result	Execution time	Memory
225793		Blerargh	Lost in the cycle (IOI19_cycle)	C++17	100 / 100	5 ms	384 KiB

cycle

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

void escape(int n){
  bool chk;
  int half = n/2;
  if (!jump(half)){
    chk = jump(n-half);
  }
  
  int l=0, r=half, prevjump=n;
  while (l+1<r){
    int mid = (l+r)/2;
	chk = jump((mid+n-prevjump)%n);
    if (chk) l=mid;
    else r=mid-1;
    prevjump = mid;
  }
  chk = jump((l+n-prevjump)%n);
  if (l+1 == r){
	  if (!jump(1) || n==2){
		  chk = jump(n-1);
	  }
  }

  return;
}

• Subtask 1: 11 / 11
• Subtask 2: 33 / 33
• Subtask 3: 56 / 56