#include <bits/stdc++.h>
using namespace std;
char a[110];
int main(){
    int i = 0,k = 0,len;
    gets(a);
    len = strlen(a) - 1;
    for(i = 0;i <= len;i++){
        if(a[i] == '('){
        	k++;
		}
        if(a[i] == ')'){
        	k--;
		}
    }
    if(k == 0)
        cout << "YES";
    else
        cout << "NO";
    return 0;
}