View Compilation Error

0_0_38624552_26737.cpp: In function 'int main()':
0_0_38624552_26737.cpp:25:23: error: 't' was not declared in this scope
     c = (n - 11 * a * t - b * t) / 2;
                       ^
0_0_38624552_26737.cpp:32:23: error: 't' was not declared in this scope
     c = (n - 11 * a * t - b * t) / 2;
                       ^
0_0_38624552_26737.cpp:38:3: error: 'sort' was not declared in this scope
   sort(ans.begin(), ans.end());
   ^~~~
0_0_38624552_26737.cpp:38:3: note: suggested alternative: 'qsort'
   sort(ans.begin(), ans.end());
   ^~~~
   qsort