char*z,c,s[2d5],t[2d5];ll k,n,p[2d5],q[2d5][128];{rd(s@n,t@p[n]);rrep(i,n){for(p[i]=p[i+1];~p[i]&&t[--p[i]]-s[i];);rep(j,128)q[n][j]=n,q[i][j]=s[i]-j?q[i+1][j]:i;}for(~*p?cout<<-1,z=0:z=t-1;z++;cout<=z-t;c++);}