View Compilation Error

0_0_25730340_27045.cpp:85:8: error: 'u' does not name a type
 inline u read(){
        ^
0_0_25730340_27045.cpp:91:19: error: variable or field 'write' declared void
 inline void write(ull x){
                   ^
0_0_25730340_27045.cpp:91:19: error: 'ull' was not declared in this scope
0_0_25730340_27045.cpp: In function 'int main()':
0_0_25730340_27045.cpp:98:12: error: 'read' was not declared in this scope
     t=read();
            ^
0_0_25730340_27045.cpp:101:27: error: 'x' was not declared in this scope
         n=read();m=read();x=read();y=read();z=read();
                           ^
0_0_25730340_27045.cpp:101:36: error: 'y' was not declared in this scope
         n=read();m=read();x=read();y=read();z=read();
                                    ^
0_0_25730340_27045.cpp:101:45: error: 'z' was not declared in this scope
         n=read();m=read();x=read();y=read();z=read();
                                             ^
0_0_25730340_27045.cpp:113:18: error: 'write' was not declared in this scope
         write(ans);
                  ^