题目链接：判断子序列

#include <iostream>

using namespace std;

const int N = 100010;

int n, m;
int a[N], b[N];

int main()
{
    cin >> n >> m;
    for(int i = 0; i < n; i++) cin >> a[i];
    for(int i = 0; i < m; i++) cin >> b[i];
    
    int i = 0, j = 0;
    while(i < n && j < m)
    {
        if(a[i] ==  b[j]) i++;
        j++;
    }
    if(i == n) puts("Yes");
    else puts("No");
    return 0;
}