#include<bits/stdc++.h> using namespace std; char s[1005],zuo=0,you=0; int main(){ scanf("%s",&s); int len=strlen(s); for(int i=0;i<len;i++){ if(s[i]=='(')zuo++; else if(s[i]==')')you++; if(you>zuo){ cout<<"NO"; return 0; } } if(zuo!=you)cout<<"NO"; else cout<<"YES"; return 0; }