View Compilation Error

0_0_14017211_7204.cpp:3:7: error: 'maxn' does not name a type
 const maxn=10000
       ^
0_0_14017211_7204.cpp: In function 'int main()':
0_0_14017211_7204.cpp:15:14: error: 'a' was not declared in this scope
              a[temp]++;
              ^
0_0_14017211_7204.cpp:22:12: error: 'a' was not declared in this scope
         if(a[j]==0)
            ^
0_0_14017211_7204.cpp:33:12: error: 'a' was not declared in this scope
         if(a[k]==0)
            ^