/in/foo.cc: In function 'int main()':
/in/foo.cc:18:10: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
        if(k>1 && h[k-1]>=h[k])
          ^
/in/foo.cc:21:10: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
        if(k<n && h[k+1]>=h[k])
          ^