View Compilation Error

0_0_33912863_31859.cpp: In function 'int main()':
0_0_33912863_31859.cpp:119:24: error: 'read' was not declared in this scope
   rep(i,1,n){a[i]=read();}
                        ^
0_0_33912863_31859.cpp:119:24: note: suggested alternative:
0_0_33912863_31859.cpp:14:6: note:   'Fast_IO::read'
  int read(){
      ^
0_0_33912863_31859.cpp:128:26: error: 'read' was not declared in this scope
   rep(i,1,m){q[i].l=read();q[i].r=read();q[i].id=i;}
                          ^
0_0_33912863_31859.cpp:128:26: note: suggested alternative:
0_0_33912863_31859.cpp:14:6: note:   'Fast_IO::read'
  int read(){
      ^