View Compilation Error

0_0_27834916_17701.cpp: In function 'int main()':
0_0_27834916_17701.cpp:64:14: error: 'i' was not declared in this scope
         tree[i].val = 2;
              ^
0_0_27834916_17701.cpp:72:13: error: 'else' without a previous 'if'
             else {
             ^
0_0_27834916_17701.cpp:75:34: error: expected ',' or ';' before 'l'
                 int ss = v.size()l
                                  ^
0_0_27834916_17701.cpp:77:22: error: 't' was not declared in this scope
                 for (t = v.begin(); t != v.end(); ++t) {
                      ^