View Compilation Error

0_0_4861637_30982.cpp:53: error: redefinition of `int n'
0_0_4861637_30982.cpp:14: error: `int n' previously declared here
0_0_4861637_30982.cpp:53: error: redefinition of `int m'
0_0_4861637_30982.cpp:14: error: `int m' previously declared here
0_0_4861637_30982.cpp:53: error: redefinition of `int i'
0_0_4861637_30982.cpp:14: error: `int i' previously declared here
0_0_4861637_30982.cpp:53: error: redefinition of `int j'
0_0_4861637_30982.cpp:14: error: `int j' previously declared here
0_0_4861637_30982.cpp: In function `int main()':
0_0_4861637_30982.cpp:59: error: redefinition of `int main()'
0_0_4861637_30982.cpp:16: error: `int main()' previously defined here