View Compilation Error

0_0_10555167_25218.cpp: In function `int main()':
0_0_10555167_25218.cpp:29: error: `_int64' undeclared (first use this function)
0_0_10555167_25218.cpp:29: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10555167_25218.cpp:29: error: expected `;' before "M"
0_0_10555167_25218.cpp:30: error: `M' undeclared (first use this function)
0_0_10555167_25218.cpp:32: error: expected `;' before "M2"
0_0_10555167_25218.cpp:33: error: `M2' undeclared (first use this function)