View Compilation Error

0_0_36619188_7545.cpp: In function 'int main()':
0_0_36619188_7545.cpp:30:29: error: 'kind' was not declared in this scope
         sort(pts + 1, pts + kind + 1);
                             ^
0_0_36619188_7545.cpp:31:42: error: expected ';' before 'f'
         for(int i = 1; i <= n; ++i)(i,n) f[i] = 0;
                                          ^
0_0_36619188_7545.cpp:32:37: error: 'j' was not declared in this scope
         for(int i = 1; i <= n ; i = j){
                                     ^