View Compilation Error

0_0_36024904_21134.cpp: In function 'int main()':
0_0_36024904_21134.cpp:21:27: error: redeclaration of 'int maxn'
         int s = 1, e = 1, maxn = 0;
                           ^
0_0_36024904_21134.cpp:14:13: note: 'int maxn' previously declared here
         int maxn = -0x7fffffff;
             ^