View Compilation Error

0_0_2698728_10264.cpp:36: error: redefinition of `int pre[1000001]'
0_0_2698728_10264.cpp:5: error: `int pre[1000001]' previously declared here
0_0_2698728_10264.cpp:36: error: redefinition of `int now[1000001]'
0_0_2698728_10264.cpp:5: error: `int now[1000001]' previously declared here
0_0_2698728_10264.cpp:36: error: redefinition of `int num[1000001]'
0_0_2698728_10264.cpp:5: error: `int num[1000001]' previously declared here
0_0_2698728_10264.cpp: In function `int main()':
0_0_2698728_10264.cpp:39: error: redefinition of `int main()'
0_0_2698728_10264.cpp:8: error: `int main()' previously defined here