func_code_string: #include <bits/stdc++.h>   long long n, m, Now, Ans, i;   long long sumi(long long a, long long b);   int main() {     scanf( %I64d %I64d , &n, &m);     Now = sumi(2, m);     if (Now == 0)       Now = 1000000009 - 1;     else       Now--;     Ans = 1;     for (i = 1; i <= n; i++) {       Ans *= Now;       Ans %= 1000000009;       if (Now == 0)         Now = 1000000009 - 1;       else         Now--;     }     printf( %I64d n , Ans);     return 0;   }   long long sumi(long long a, long long b) {     long long ret = 1, i, c = a;     for (i = 1; i <= b; i += i) {       if ((b & i) > 0) {         ret *= c;         ret %= 1000000009;       }       c *= c;       c %= 1000000009;     }     return ret;   }   