View Compilation Error

0_0_29138209_6462.cpp:8:8: error: 'maxn' was not declared in this scope
 int rt[maxn],minv[maxn<<2],x,y;
        ^
0_0_29138209_6462.cpp:8:19: error: 'maxn' was not declared in this scope
 int rt[maxn],minv[maxn<<2],x,y;
                   ^
0_0_29138209_6462.cpp:9:10: error: 'maxn' was not declared in this scope
 int maxv[maxn<<2],lazy[maxn<<2];
          ^
0_0_29138209_6462.cpp:9:24: error: 'maxn' was not declared in this scope
 int maxv[maxn<<2],lazy[maxn<<2];
                        ^
0_0_29138209_6462.cpp:10:1: error: 'll' does not name a type
 ll sum[maxn<<2];
 ^
0_0_29138209_6462.cpp:11:15: error: variable or field 'build' declared void
 void build(lrt){
               ^
0_0_29138209_6462.cpp:11:12: error: 'lrt' was not declared in this scope
 void build(lrt){
            ^