View Compilation Error

0_0_2316891_23737.cpp: In function `int main()':
0_0_2316891_23737.cpp:11: error: `_int64' undeclared (first use this function)
0_0_2316891_23737.cpp:11: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2316891_23737.cpp:11: error: expected `;' before "most"
0_0_2316891_23737.cpp:21: error: `most' undeclared (first use this function)