View Compilation Error

0_0_30524955_22943.cpp: In function 'int main()':
0_0_30524955_22943.cpp:10:9: error: redeclaration of 'int n'
     int n;
         ^
0_0_30524955_22943.cpp:9:9: note: 'int n' previously declared here
     int n, i, j, k, cnt, sum, num;
         ^