View Compilation Error

0_0_4391030_1008.cpp:3: error: `main' must return `int'
0_0_4391030_1008.cpp: In function `int main(...)':
0_0_4391030_1008.cpp:18: error: integer constant is too large for "long" type
0_0_4391030_1008.cpp:20: error: integer constant is too large for "long" type
0_0_4391030_1008.cpp:21: error: integer constant is too large for "long" type