#include <iostream>

int sign(int val)
{
    return (val>0) - (val<0);
}

int max(int a, int b)
{
    return (a < b)? b:a;
}

int main()
{
    int t, p[2];
    int pos[2] = {0};
    std::cin >> t >> p[0] >> p[1];

    if((t < max(p[0], p[1])) || ((p[0] == 0) && (p[1] == 0) && (t == 1)))
    {
        std::cout << "NO" << std::endl;
        return 0;
    }
    if(t == 1)
    {
        if(p[1])
            std::cout << ">";
        if(p[0])
            std::cout << ">";
        
        std::cout << std::endl;
    }
    
    p[0]--;
    p[1]--;
    
    std::cout << "YES" << std::endl;  
    
    while((pos[0] != p[0]) || (pos[1] != p[1]))
    {
        char out[3] = {0};
        int i = 0;
        
        switch(sign(p[1] - pos[1]))
        {
            case 1:  out[i] = '>'; pos[1]++; i++; break;
            case -1: out[i] = '<'; pos[1]--; i++; break;
            default:;
        }
        switch(sign(p[0] - pos[0]))
        {
            case 1:  out[i] = '^'; pos[0]++; break;
            case -1: out[i] = 'v'; pos[0]--; break;
            default:;
        }
        
        t--;
        std::cout << out << std::endl;
    }
    
    int i;
    for(i = 0; t > 1; i++)
    {
        t--;
        std::cout << (((i % 2) == 0)? ">":"<") << std::endl;
    }
    std::cout << (((i % 2) == 0)? ">^":"^") << std::endl;
    
    return 0;
}