View Compilation Error

0_0_21851527_19572.cpp: In function 'void init()':
0_0_21851527_19572.cpp:28:25: error: 'n' was not declared in this scope
     for(int i = 1; i <= n; ++i) go[i].reset();
                         ^
0_0_21851527_19572.cpp:28:33: error: 'go' was not declared in this scope
     for(int i = 1; i <= n; ++i) go[i].reset();
                                 ^