View Compilation Error

0_0_28050969_10114.cpp:11:1: error: expected ',' or ';' before 'int'
 int ans[maxn*3+100];
 ^
0_0_28050969_10114.cpp: In function 'void init()':
0_0_28050969_10114.cpp:24:12: error: 'ans' was not declared in this scope
     memset(ans,0,sizeof(ans));
            ^
0_0_28050969_10114.cpp: In function 'int main()':
0_0_28050969_10114.cpp:42:16: error: 'ans' was not declared in this scope
  printf("%d\n",ans[n]);
                ^