#include <cstdio>

 #include <cstring>

 using namespace std;

 const int maxn = 1e8;

 int begina, beginb, enda, endb, point1, point2, len1, len2;

 bool flag;

 char a[maxn], b[maxn];

 int main () {

     while(~scanf("%s %s", a, b)) {

         flag = true;

         point1 = point2 = maxn;

         len1 = strlen(a), len2 = strlen(b);

         if(strchr(a, '.'))

             point1 = strchr(a, '.') - a;

         if(strchr(b, '.'))

             point2 = strchr(b, '.') - b;

         begina = -, beginb = -, enda = len1, endb = len2;

         for(int i = ; i < len1; i ++)// find begina

             if(a[i] == '' && i < point1) begina = i;

             else break;

         for(int i = ; i < len2; i ++)// find beginb

             if(b[i] == '' && i < point2) beginb = i;

             else break;

         for(int i = len1 - ; i >= point1; i --)// find enda

             if(a[i] == '') enda = i;

             else if(a[i] == '.') enda = i;

             else break;

         for(int i = len2 -; i >= point2; i --)// find endb

             if(b[i] == '') endb = i;

             else if(b[i] == '.') endb = i;

             else break;

         int i = begina + ;

         for(int j = beginb + ; i < enda; j ++)

             if(a[i ++] != b[j]) {

                 printf("NO\n");

                 flag = false;

                 break;

             }

         if(flag) printf("YES\n");

     }

     return ;

 }