#include <cstdio>

 #include <cstring>

 #define MAXN 85

 typedef struct {

     char m[MAXN][MAXN];

 } mat_st;

 int n, m;

 char buf[MAXN];

 mat_st e;

 mat_st mat_mult(mat_st a, mat_st b) {

     int i, j, k;

     mat_st c;

     memset(c.m, , sizeof(c.m));

     for (i=; i<=n; ++i) {

         for (j=; j<=n; ++j) {

             for (k=; k<=n; ++k)

                 c.m[i][j] += a.m[i][k] & b.m[k][j];

         }

     }

     return c;

 }

 mat_st mat_power(mat_st a, int r) {

     mat_st ret;

     memset(ret.m, , sizeof(ret.m));

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

         ret.m[i][i] = ;

     while (r) {

         if (r & )

             ret = mat_mult(ret, a);

         a = mat_mult(a, a);

         r >>= ;

     }

     return ret;

 }

 int main() {

     mat_st org;

     int i, j;

     while (scanf("%d %d",&n,&m)!=EOF && n) {

         memset(org.m, , sizeof(org.m));

         for (i=; i<=n; ++i) {

             scanf("%d", &j);

             org.m[i][j] = ;

         }

         getchar();

         gets(buf+);

         mat_st ans = mat_power(org, m);

         for (i=; i<=n; ++i) {

             for (j=; j<=n; ++j) {

                 if (ans.m[j][i]) {

                     printf("%c", buf[j]);

                     break;

                 }

             }

         }

         printf("\n");

     }

     return ;

 }