View Compilation Error

0_0_34831582_20555.cpp:11:1: error: 'll' does not name a type
 ll cal[maxn*maxm*2];
 ^
0_0_34831582_20555.cpp: In function 'int main()':
0_0_34831582_20555.cpp:21:4: error: 'cal' was not declared in this scope
    cal[i] = 0;
    ^
0_0_34831582_20555.cpp:47:13: error: 'cal' was not declared in this scope
      ans += cal[nextt[now][tmp^1]]-(1ll*num[nextt[now][tmp^1]]*pre[i][j][tmp]);
             ^
0_0_34831582_20555.cpp:60:5: error: 'cal' was not declared in this scope
     cal[now] += 1ll*pre[i-1][j][tmp^1];
     ^