CodeForces

A - A

 CodeForces - 876A

Winnie-the-Pooh likes honey very much! That is why he decided to visit his friends. Winnie has got three best friends: Rabbit, Owl and Eeyore, each of them lives in his own house. There are winding paths between each pair of houses. The length of a path between Rabbit's and Owl's houses is a meters, between Rabbit's and Eeyore's house is b meters, between Owl's and Eeyore's house is c meters.

For enjoying his life and singing merry songs Winnie-the-Pooh should have a meal ntimes a day. Now he is in the Rabbit's house and has a meal for the first time. Each time when in the friend's house where Winnie is now the supply of honey is about to end, Winnie leaves that house. If Winnie has not had a meal the required amount of times, he comes out from the house and goes to someone else of his two friends. For this he chooses one of two adjacent paths, arrives to the house on the other end and visits his friend. You may assume that when Winnie is eating in one of his friend's house, the supply of honey in other friend's houses recover (most probably, they go to the supply store).

Winnie-the-Pooh does not like physical activity. He wants to have a meal n times, traveling minimum possible distance. Help him to find this distance.

Input

First line contains an integer n (1 ≤ n ≤ 100) — number of visits.

Second line contains an integer a (1 ≤ a ≤ 100) — distance between Rabbit's and Owl's houses.

Third line contains an integer b (1 ≤ b ≤ 100) — distance between Rabbit's and Eeyore's houses.

Fourth line contains an integer c (1 ≤ c ≤ 100) — distance between Owl's and Eeyore's houses.

Output

Output one number — minimum distance in meters Winnie must go through to have a meal n times.

Example

Input

3231

Output

3

Input

1235

Output

0

Note

In the first test case the optimal path for Winnie is the following: first have a meal in Rabbit's house, then in Owl's house, then in Eeyore's house. Thus he will pass the distance 2 + 1 = 3.

In the second test case Winnie has a meal in Rabbit's house and that is for him. So he doesn't have to walk anywhere at all.

 

/*题意：给出n代表蹭饭的次数，给出3个点之间的距离，而某某是个吃货，想吃最多的饭，走最少的路起点是自己家，也就是支持一顿饭在自家解决即可，出0；其他简单模拟*/#include<iostream>#include<stdio.h>using namespace std;#define N 1000000000#define ll long longint min(int a,int b){    return a<b?a:b;}int main(){    int n;    int a,b,c;    ll ans=0;    int step=1;    cin>>n>>a>>b>>c;    for(int i=1;i<n;i++)    {        if(b<=a&&step==1)        {            ans+=b;            step=3;        }        else if(b>a&&step==1)        {            ans+=a;            step=2;        }        else if(b<=c&&step==3)        {            ans+=b;            step=1;        }        else if(b>c&&step==3)        {            ans+=c;            step=2;        }        else if(a<=c&&step==2)        {            ans+=a;            step=1;        }        else if(a>c&&step==2)        {            ans+=c;            step=3;        }    }    cout<<ans<<endl;    return 0;}

B - B

 CodeForces - 876B 

You are given a multiset of n integers. You should select exactly k of them in a such way that the difference between any two of them is divisible by m, or tell that it is impossible.

Numbers can be repeated in the original multiset and in the multiset of selected numbers, but number of occurrences of any number in multiset of selected numbers should not exceed the number of its occurrences in the original multiset.

Input

First line contains three integers n, k and m (2 ≤ k ≤ n ≤ 100 000, 1 ≤ m ≤ 100 000) — number of integers in the multiset, number of integers you should select and the required divisor of any pair of selected integers.

Second line contains n integers a₁, a₂, ..., a_n (0 ≤ a_i ≤ 10⁹) — the numbers in the multiset.

Output

If it is not possible to select k numbers in the desired way, output «No» (without the quotes).

Otherwise, in the first line of output print «Yes» (without the quotes). In the second line print k integers b₁, b₂, ..., b_k — the selected numbers. If there are multiple possible solutions, print any of them.

Example

Input

3 2 31 8 4

Output

Yes1 4 

Input

3 3 31 8 4

Output

No

Input

4 3 52 7 7 7

Output

Yes2 7 7 

/*题意：n，m，mod  n个数从这n个数里面找出对mod取余相等的数，如果个数大于等于m输出m个数（符合条件的），否则No思路：找出所有的余数，记录个数，找到最多的那一个，记下此时的余数，遍历*/#include<iostream>#include<stdio.h>#include<string.h>#include<map>#include<string>using namespace std;#define N 100010#define ll long longint vis[N];int num,a[N],b[N],c[N];int main(){    int n,m,mod;    int temp,flag=0;    cin>>n>>m>>mod;    for(int i=1;i<=n;i++)    {        scanf("%d",&a[i]);        temp=a[i]%mod;        b[i]=temp;        c[temp]++;    }    for(int i=0;i<mod;i++)        if(c[i]>=m)        {            flag=1;            num=i;            break;        }    temp=0;    if(flag==1)    {        cout<<"Yes"<<endl;        for(int i=1;i<=n;i++)            if(b[i]==num)            {                temp++;                if(temp==m)                {                    printf("%d\n",a[i]);                    break;                }                else                printf("%d ",a[i]);            }    }    else cout<<"No"<<endl;    return 0;}

C - C

 CodeForces - 876C 

Eighth-grader Vova is on duty today in the class. After classes, he went into the office to wash the board, and found on it the number n. He asked what is this number and the teacher of mathematics Inna Petrovna answered Vova that n is the answer to the arithmetic task for first-graders. In the textbook, a certain positive integer xwas given. The task was to add x to the sum of the digits of the number x written in decimal numeral system.

Since the number n on the board was small, Vova quickly guessed which x could be in the textbook. Now he wants to get a program which will search for arbitrary values of the number n for all suitable values of x or determine that such x does not exist. Write such a program for Vova.

Input

The first line contains integer n (1 ≤ n ≤ 10⁹).

Output

In the first line print one integer k — number of different values of x satisfying the condition.

In next k lines print these values in ascending order.

Example

Input

21

Output

115

Input

20

Output

0

Note

In the first test case x = 15 there is only one variant: 15 + 1 + 5 = 21.

In the second test case there are no such x.

/*题意：略思路：直接暴力一发，超时，立刻换了方式，上限10^9，这些书中最大的也就是9个9，和是81，也就是答案一定在[n-81,n]之间*/#include<iostream>#include<stdio.h>using namespace std;#define N 1000000000#define ll long longll map[1000000];int max(int a,int b){    return a>b?a:b;}ll change(ll n){    ll ans=0;    while(n>0)    {        ans+=(n%10);        n/=10;    }    return ans;}int main(){    ll n;    ll temp=0,num=0;    scanf("%lld",&n);    for(int i=max(1,n-82);i<n;i++)    {        if(i+change(i)==n)        {            map[num++]=i;        }    }    printf("%d\n",num);    for(int i=0;i<num;i++)    {        printf("%lld\n",map[i]);    }    return 0;}