View Compilation Error

0_0_2138227_25754.cpp:35: error: conflicting declaration 'int n'
0_0_2138227_25754.cpp:4: error: 'n' has a previous declaration as `long long int n'
0_0_2138227_25754.cpp:35: error: type mismatch with previous external decl of `int n'
0_0_2138227_25754.cpp:4: error: previous external decl of `long long int n'
0_0_2138227_25754.cpp:35: error: declaration of `int n'
0_0_2138227_25754.cpp:4: error: conflicts with previous declaration `long long int n'
0_0_2138227_25754.cpp: In function `int main()':
0_0_2138227_25754.cpp:56: error: redefinition of `int main()'
0_0_2138227_25754.cpp:22: error: `int main()' previously defined here