View Compilation Error

0_0_8693426_24155.cpp: In function `int main()':
0_0_8693426_24155.cpp:5: error: `_int64' undeclared (first use this function)
0_0_8693426_24155.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8693426_24155.cpp:5: error: expected `;' before "m1"
0_0_8693426_24155.cpp:7: error: `m1' undeclared (first use this function)
0_0_8693426_24155.cpp:7: error: `m2' undeclared (first use this function)
0_0_8693426_24155.cpp:9: error: `r1' undeclared (first use this function)
0_0_8693426_24155.cpp:9: error: `r2' undeclared (first use this function)
0_0_8693426_24155.cpp:9: error: `r3' undeclared (first use this function)
0_0_8693426_24155.cpp:11: error: `i' undeclared (first use this function)