View Compilation Error

0_0_4688634_9682.cpp:4: error: `_int64' does not name a type
0_0_4688634_9682.cpp:16: error: `_int64' does not name a type
0_0_4688634_9682.cpp: In function `int main()':
0_0_4688634_9682.cpp:25: error: `_int64' undeclared (first use this function)
0_0_4688634_9682.cpp:25: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4688634_9682.cpp:25: error: expected `;' before "x"
0_0_4688634_9682.cpp:29: error: `ans' undeclared (first use this function)
0_0_4688634_9682.cpp:32: error: `x' undeclared (first use this function)
0_0_4688634_9682.cpp:33: error: `lcm' undeclared (first use this function)