#include<bits/stdc++.h>

 const int maxn = ;

 int n,m,a[maxn<<],lens;

 char s[maxn],t[maxn];

 int main()

 {

     scanf("%d%d%s%s",&n,&m,s+,t+);

     lens = n;

     for (int i=; i<=n; i++) a[i] = s[i]-'';

     for (int i=; i<=m; i++)

     {

         if (t[i]=='+') a[lens]++;

         if (t[i]=='-') a[lens]--;

         if (t[i]=='*') a[++lens] = ;

         if (t[i]=='/'){

             if (a[lens] < )

                 a[lens-] -= (-a[lens]+)>>;

             else a[lens-] += a[lens]>>;

             a[lens--] = ;

         }

     }

     for (int i=lens; i; i--)

         if (a[i] < )

             a[i-] -= (-a[i]+)>>, a[i] = (-a[i])&;

         else a[i-] += a[i]>>, a[i] = a[i]&;

     for (int i=; i<=lens; i++) putchar(a[i]+'');

     return ;

 }