#include <stdio.h>

#define MAX 100

struct sqlist{

    int data[MAX];

    int length;

}s;

void input(sqlist *s) {

    printf("请输入元素个数：");

    scanf("%d",&s -> length);

    printf("请输入%d个元素：",s -> length);

    for(int i = ;i < s -> length;i ++) {

        scanf("%d",&s -> data[i]);

    }

}

void print(sqlist s) {

    printf("%d\n",s.length);

    for(int i = ;i < s.length;i ++) {

        printf("%d ",s.data[i]);

    }

    putchar('\n');

}

void del_1(sqlist *s,int x) {//记录不等于x的个数

    int k = ;

    for(int i = ;i < s -> length;i ++) {

        if(s -> data[i] != x) s -> data[k ++] = s -> data[i];

    }

    s -> length = k;

}

void del_2(sqlist *s,int x) {//记录等于x的个数

    int k = ;

    for(int i = ;i < s -> length;i ++) {

        if(s -> data[i] == x) k ++;

        else s -> data[i - k] = s -> data[i];

    }

    s -> length -= k;

}

int main() {

    input(&s);

    int x;

    printf("请输入x：");

    scanf("%d",&x);

    del_1(&s,x);

    print(s);

    return ;

}