#include <bits/stdc++.h>
using namespace std;

int main(){
    int T,A,B;
    cin>>T>>A>>B;
    if(A>T || B>T || (A==0 && B==0 && T==1)){
        cout<<"NO"<<endl;
        return 0;
    }
    cout<<"YES"<<endl;
    vector<string> updown(T),rightleft(T);
    for(int i=0;i<T;i++){
        if(A){
            updown[i]="^";
            A--;
        }else{
            updown[i]="v";
            A++;
        }
        if(B){
            rightleft[T-1-i]=">";
            B--;
        }else{
            rightleft[T-1-i]="<";
            B++;
        }
    }
    if(A){
        updown[T-1]="";
    }
    if(B){
        rightleft[0]="";
    }
    for(int i=0;i<T;i++){
        cout<<updown[i]<<rightleft[i]<<endl;
    }
}