View Compilation Error

0_0_11811601_14274.cpp: In function `int main()':
0_0_11811601_14274.cpp:6: error: `_int64' undeclared (first use this function)
0_0_11811601_14274.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11811601_14274.cpp:6: error: expected `;' before "dp"
0_0_11811601_14274.cpp:7: error: `dp' undeclared (first use this function)