View Compilation Error

0_0_33503053_10507.cpp: In function 'int main()':
0_0_33503053_10507.cpp:69:3: error: 'n' was not declared in this scope
   n=read(),L=read();
   ^
0_0_33503053_10507.cpp:69:12: error: 'L' was not declared in this scope
   n=read(),L=read();
            ^
0_0_33503053_10507.cpp:87:12: error: 'tree' was not declared in this scope
     int jj=tree[j][l],kk=tree[k][l^1];
            ^
0_0_33503053_10507.cpp:88:17: error: 'kk' was not declared in this scope
     dp[i+1][jj][kk][mask|AC1.endpos[jj]|AC2.endpos[kk]]=mo(dp[i+1][jj][kk][mask|AC1.endpos[jj]|AC2.endpos[kk]]+dp[i][j][k][mask]);
                 ^