/* MIPT, task # 008
   "Brackets"
   13.09.2011
*/

#include <stdio.h>

#define MAX_STR_LENGTH 4000

int main()
{
  char s[MAX_STR_LENGTH];

  gets (s);

  int balance = 0;
  char *cur = s;
  while (*cur) {
    if ('(' == *cur) {
      ++balance;
    } else {
      --balance;
    }
    if (balance < 0) {
      puts ("NO");
      exit (0);
    }
    ++cur;
  }

  if (!balance) {
    puts ("YES");
  } else {
    puts ("NO");
  }

  return 0;
}