View Compilation Error

0_0_18130164_10904.cpp:1:15: error: 't' was not declared in this scope
      int mid=(t[cur].r+t[cur].l)/2;
               ^
0_0_18130164_10904.cpp:1:17: error: 'cur' was not declared in this scope
      int mid=(t[cur].r+t[cur].l)/2;
                 ^
0_0_18130164_10904.cpp:1:24: error: 't' was not declared in this scope
      int mid=(t[cur].r+t[cur].l)/2;
                        ^
0_0_18130164_10904.cpp:1:26: error: 'cur' was not declared in this scope
      int mid=(t[cur].r+t[cur].l)/2;
                          ^
0_0_18130164_10904.cpp:2:9: error: 't' does not name a type
         t[cur<<1].add+=t[cur].add;
         ^
0_0_18130164_10904.cpp:3:9: error: 't' does not name a type
         t[cur<<1|1].add+=t[cur].add;
         ^
0_0_18130164_10904.cpp:4:9: error: 't' does not name a type
         t[cur<<1].sum+=(mid-t[cur].l+1)*t[cur].add;
         ^
0_0_18130164_10904.cpp:5:9: error: 't' does not name a type
         t[cur<<1|1].sum+=(t[cur].r-mid)*t[cur].add;
         ^
0_0_18130164_10904.cpp:6:5: error: expected declaration before '}' token
     }
     ^