View Compilation Error

0_0_36576138_11495.cpp:28:7: error: 'N' was not declared in this scope
 ull h[N], p[N];
       ^
0_0_36576138_11495.cpp:28:13: error: 'N' was not declared in this scope
 ull h[N], p[N];
             ^
0_0_36576138_11495.cpp: In function 'void gethash(long long int)':
0_0_36576138_11495.cpp:31:5: error: 'p' was not declared in this scope
     p[0] = 1;
     ^
0_0_36576138_11495.cpp:33:9: error: 'h' was not declared in this scope
         h[i] = h[i - 1] * mod + s[i];
         ^
0_0_36576138_11495.cpp: In function 'ull get(long long int, long long int)':
0_0_36576138_11495.cpp:38:12: error: 'h' was not declared in this scope
     return h[r] - h[l - 1] * p[r - l + 1];
            ^
0_0_36576138_11495.cpp:38:30: error: 'p' was not declared in this scope
     return h[r] - h[l - 1] * p[r - l + 1];
                              ^