View Compilation Error

0_0_8413543_29230.cpp: In function `int main()':
0_0_8413543_29230.cpp:9: error: `_int64' undeclared (first use this function)
0_0_8413543_29230.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8413543_29230.cpp:9: error: expected `;' before "m"
0_0_8413543_29230.cpp:10: error: `m' undeclared (first use this function)
0_0_8413543_29230.cpp:11: error: `a' undeclared (first use this function)