View Compilation Error

0_0_7716542_18747.cpp: In function `int main()':
0_0_7716542_18747.cpp:13: error: `i64' undeclared (first use this function)
0_0_7716542_18747.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7716542_18747.cpp:13: error: expected `;' before "a_min"
0_0_7716542_18747.cpp:14: error: `a_min' undeclared (first use this function)
0_0_7716542_18747.cpp:14: error: `a_max' undeclared (first use this function)
0_0_7716542_18747.cpp:19: error: `temp' undeclared (first use this function)