View Compilation Error

0_0_23366905_24442.cpp: In function 'int main()':
0_0_23366905_24442.cpp:21:4: error: 'ans' was not declared in this scope
    ans=a[i];
    ^
0_0_23366905_24442.cpp:37:9: error: 'maxsum' was not declared in this scope
   cout<<maxsum<<" "<<i1+1<<" "<<j+1<<endl;
         ^