#include<bits/stdc++.h>
using namespace std;
int main(){
    int T,A,B;

    cin>>T>>A>>B;

    if(max(A,B)==T){
        cout<<"YES"<<endl;
        for(int i=0;i<T;i++){
            if(i<A)cout<<"^";
            if(i<B)cout<<">";
            cout<<endl;
        }
    }
    else if(max(A,B)>T){
        cout<<"NO"<<endl;
    }
    else if(A+B>=T){
        for(int i=0;i<T;i++){
            if(i<A)cout<<"^";
            if(i+B>=T)cout<<">";
            cout<<endl;
        }
    }
    else if(T-max(A,B)==1){
        cout<<"NO"<<endl;
    }
    else{
        for(int i=0;i<max(A,B);i++){
            if(i<A)cout<<"^";
            if(i<B)cout<<">";
            cout<<endl;
        }
        T-=max(A,B);
        if(T&1){
            T-=3;
            cout<<"^>\nv\n<\n";
        }
        for(int i=0;i<T/2;i++){
            cout<<"^\nv\n";
        }
    }

    return 0;
}