View Compilation Error

0_0_25730364_17525.cpp: In function 'int main()':
0_0_25730364_17525.cpp:103:27: error: 'x' was not declared in this scope
         n=read();m=read();x=read();y=read();z=read();
                           ^
0_0_25730364_17525.cpp:103:36: error: 'y' was not declared in this scope
         n=read();m=read();x=read();y=read();z=read();
                                    ^
0_0_25730364_17525.cpp:103:45: error: 'z' was not declared in this scope
         n=read();m=read();x=read();y=read();z=read();
                                             ^