/in/foo.cc: In function 'int main()':
/in/foo.cc:18:32: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
                 if (a[i]>a[i-1]&&a[i]>=a[i+1]||a[i]<a[i-1]&&a[i]<=a[i+1]) ++cnt;
                     ~~~~~~~~~~~^~~~~~~~~~~~~~