/in/foo.cc: In function 'int main()':
/in/foo.cc:15:11: warning: iteration 1100 invokes undefined behavior [-Waggressive-loop-optimizations]
     if(a[i]>0)max++;
        ~~~^
/in/foo.cc:14:18: note: within this loop
     for(int i=0;i<=1100;i++)
                 ~^~~~~~
/in/foo.cc:18:15: warning: iteration 1100 invokes undefined behavior [-Waggressive-loop-optimizations]
         if(a[i]>0){
            ~~~^
/in/foo.cc:17:18: note: within this loop
     for(int i=0;i<=1100;i++){
                 ~^~~~~~