#include "brperm.h" int n; char* str; inline int Mpow2(int x) { return (1 << x); } int rot(int x, int k) { int ans = 0; for (int i = 0; i < k; i++) if ((x >> i) & 1) ans |= (1 << (k - 1 - i)); return ans; } void init(int l, const char s[]) { n = l; str = s; } int query(int s, int k) { if (s + Mpow2(k) - 1 >= n) return 0; for (int i = s; i < s + Mpow2(k); i++) if (str[i] != str[s + rot(i - s, k)]) return 0; return 1; }

brperm.cpp: In function 'void init(int, const char*)':
brperm.cpp:22:9: error: invalid conversion from 'const char*' to 'char*' [-fpermissive]
   22 |   str = s;
      |         ^
      |         |
      |         const char*