View Compilation Error

0_0_39760410_6045.cpp: In function 'void solve()':
0_0_39760410_6045.cpp:37:5: error: 'vector' was not declared in this scope
   37 |     vector<int> dp(n+1);
      |     ^~~~~~
0_0_39760410_6045.cpp:3:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
    2 | #include <iostream>
  +++ |+#include <vector>
    3 | #define int long long
0_0_39760410_6045.cpp:3:13: error: expected primary-expression before 'long'
    3 | #define int long long
      |             ^~~~
0_0_39760410_6045.cpp:37:12: note: in expansion of macro 'int'
   37 |     vector<int> dp(n+1);
      |            ^~~
0_0_39760410_6045.cpp:38:5: error: 'dp' was not declared in this scope
   38 |     dp[1]=1;
      |     ^~