/in/foo.c:2:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main(){int n;scanf("%d",&n),printf("%d\n",n+1>>1);return 0;}
 ^~~~
/in/foo.c: In function 'main':
/in/foo.c:2:44: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 main(){int n;scanf("%d",&n),printf("%d\n",n+1>>1);return 0;}
                                           ~^~