View Compilation Error

0_0_36647027_11420.cpp: In function 'int32_t main()':
0_0_36647027_11420.cpp:56:31: error: expected primary-expression before ')' token
         t1.push_back(bitset<N>);
                               ^
0_0_36647027_11420.cpp:57:31: error: expected primary-expression before ')' token
         t2.push_back(bitset<N>);
                               ^