View Compilation Error

0_0_37786050_8621.cpp: In function 'long double min_cir()':
0_0_37786050_8621.cpp:102:11: error: 'res_up' was not declared in this scope
     while(res_up[i])tt[++n]=a[res_up[i]];
           ^
0_0_37786050_8621.cpp:102:29: error: 'a' was not declared in this scope
     while(res_up[i])tt[++n]=a[res_up[i]];
                             ^
0_0_37786050_8621.cpp:103:11: error: 'res_down' was not declared in this scope
     while(res_down[i])tt[++n]=a[res_down[i]];
           ^
0_0_37786050_8621.cpp:103:31: error: 'a' was not declared in this scope
     while(res_down[i])tt[++n]=a[res_down[i]];
                               ^
0_0_37786050_8621.cpp:104:20: error: 't' was not declared in this scope
     random_shuffle(t+1,t+1+n);
                    ^