View Compilation Error

0_0_37652373_12425.cpp: In function 'void pushdown(int)':
0_0_37652373_12425.cpp:47:6: error: redefinition of 'void pushdown(int)'
 void pushdown(int o){
      ^
0_0_37652373_12425.cpp:35:6: note: 'void pushdown(int)' previously defined here
 void pushdown(int u)
      ^
0_0_37652373_12425.cpp: In function 'void build(int, int, int)':
0_0_37652373_12425.cpp:100:13: error: 'pushup' was not declared in this scope
     pushup(o);
             ^
0_0_37652373_12425.cpp: In function 'void update(int, int, int)':
0_0_37652373_12425.cpp:143:13: error: 'pushup' was not declared in this scope
     pushup(o);
             ^