Kolakoski

Posted on | In , ,

题目链接

题意

给出一个规则构造数列。

思路

按题意暴力模拟即可。

Code

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#include<bits/stdc++.h>
using namespace std;
#define ll long long
#ifndef ONLINE_JUDGE
#define dbg(x...) do{cout << "\033[33;1m" << #x << "->" ; err(x);} while (0)
void err(){cout << "\033[39;0m" << endl;}
template<template<typename...> class T, typename t, typename... A>
void err(T<t> a, A... x){for (auto v: a) cout << v << ' '; err(x...);}
template<typename T, typename... A>
void err(T a, A... x){cout << a << ' '; err(x...);}
#else
#define dbg(...)
#endif
#define inf 1ll << 50
const int maxn=1e7+10;
int arr[maxn];
queue<int> q;
void init(){
	int cnt=0;
	arr[++cnt]=1;
	q.push(2);
	int cur=1;
	int flag=1;
	while(!q.empty() && cnt<maxn-2){
		int tmp=q.front();
		q.pop();
		cnt++;
		arr[cnt]=((arr[cnt-1]-1)^1)+1;
		q.push(arr[cnt]);
		if(flag){
			q.pop(); flag--;
		}
		if(tmp==2){
			cnt++;
			arr[cnt]=arr[cnt-1];
			q.push(arr[cnt]);
		}
	}
}
int main(){
	init();
	int t;
	scanf("%d",&t);
	while(t--){
		int n;
		scanf("%d",&n);
		printf("%d\n",arr[n]);
	}
}
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