View Compilation Error

0_0_1631638_13331.cpp: In function `int main()':
0_0_1631638_13331.cpp:32: error: expected primary-expression before "int"
0_0_1631638_13331.cpp:32: error: `ans' undeclared (first use this function)
0_0_1631638_13331.cpp:32: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1631638_13331.cpp:33: error: `n' undeclared (first use this function)
0_0_1631638_13331.cpp:34: error: `k' undeclared (first use this function)