View Compilation Error

0_0_39667201_19631.cpp:4:1: error: 'vector' does not name a type
    4 | vector<int> nums;
      | ^~~~~~
0_0_39667201_19631.cpp: In function 'int main()':
0_0_39667201_19631.cpp:10:16: error: 'nums' was not declared in this scope
   10 |         cin >> nums;
      |                ^~~~
0_0_39667201_19631.cpp:13:10: error: 'nums' was not declared in this scope
   13 |     sort(nums.begin(),nums.end(), greater<int>());
      |          ^~~~