View Compilation Error

0_0_23049532_2511.cpp:38:1: error: invalid use of template-name 'std::vector' without an argument list
 vector
 ^
0_0_23049532_2511.cpp: In function 'int main()':
0_0_23049532_2511.cpp:46:9: error: 'vec' was not declared in this scope
         vec.clear();
         ^