「雜題亂刷」AT_abc161_d

wangmarui發表於2024-06-14

程式碼恢復訓練 2024.6.14.

bfs 板子題。

連結 (luogu)

連結 (atcoder)

程式碼:

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/*
Tips:
你陣列開小了嗎?
你MLE了嗎?
你覺得是貪心,是不是該想想dp?
一個小時沒調出來,是不是該考慮換題?
打 cf 不要用 umap!!!

記住,rating 是身外之物。

該衝正解時衝正解!

Problem:

演算法:

思路:

*/
#include<bits/stdc++.h>
using namespace std;
//#define map unordered_map
#define forl(i,a,b) for(register long long i=a;i<=b;i++)
#define forr(i,a,b) for(register long long i=a;i>=b;i--)
#define forll(i,a,b,c) for(register long long i=a;i<=b;i+=c)
#define forrr(i,a,b,c) for(register long long i=a;i>=b;i-=c)
#define lc(x) x<<1
#define rc(x) x<<1|1
#define mid ((l+r)>>1)
#define cin(x) scanf("%lld",&x)
#define cout(x) printf("%lld",x)
#define lowbit(x) (x&-x)
#define pb push_back
#define pf push_front
#define IOS ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define endl '\n'
#define QwQ return 0;
#define ll long long
#define ull unsigned long long
#define lcm(x,y) x/__gcd(x,y)*y
#define Sum(x,y) 1ll*(x+y)*(y-x+1)/2
#define aty cout<<"Yes\n";
#define atn cout<<"No\n";
#define cfy cout<<"YES\n";
#define cfn cout<<"NO\n";
#define xxy cout<<"yes\n";
#define xxn cout<<"no\n";
#define printcf(x) x?cout<<"YES\n":cout<<"NO\n";
#define printat(x) x?cout<<"Yes\n":cout<<"No\n";
#define printxx(x) x?cout<<"yes\n":cout<<"no\n";
ll t;
ll n;
ll a[1000010],k;
queue<ll>q; 
void init()
{
	forl(i,1,9)
		q.push(i),a[++k]=i;
	while(!q.empty() && k<=1e5)
	{
		ll num=q.front(),x=num%10;
		q.pop();
		forl(i,-1,1)
		{
			ll y=x+i;
			if(y<10 && y>=0)
				a[++k]=num*10+y,q.push(num*10+y);
		}
	}
}
void solve()
{
	cin>>n;
	init();
	sort(a+1,a+1+k);
	cout<<a[n]<<endl;
}
int main()
{
	IOS;
	t=1;
// 	cin>>t;
	while(t--)
		solve();
    /******************/
	/*while(L<q[i].l) */
	/*    del(a[L++]);*/
	/*while(L>q[i].l) */
	/*    add(a[--L]);*/
	/*while(R<q[i].r) */
	/*	  add(a[++R]);*/
	/*while(R>q[i].r) */
	/*    del(a[R--]);*/
    /******************/
	QwQ;
}