Language: C++

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

#define LL long long
#define LD long double
#define SC(t,x) static_cast<t>(x)
#define AR(t) vector < t >
#define PII pair < int, int >
#define PLL pair < LL, LL >
#define PIL pair < int, LL >
#define PLI pair < LL, int >
#define MP make_pair
#define PB push_back
#define PF push_front
#define POB pop_back
#define POF pop_front
#define PRF first
#define PRS second
#define INIT(ar,val) memset ( ar, val, sizeof ( ar ) )
#define lp(loop,start,end) for ( int loop = start; loop < end; ++loop )
#define lpd(loop,start,end) for ( int loop = start; loop > end; --loop )
#define lpi(loop,start,end) for ( int loop = start; loop <= end; ++loop )
#define lpdi(loop,start,end) for ( int loop = start; loop >= end; --loop )
#define qmax(a,b) (((a)>(b))?(a):(b))
#define qmin(a,b) (((a)<(b))?(a):(b))
#define qabs(a) (((a)>=0)?(a):(-(a)))

const int INF = 0x3fffffff;
const int SINF = 0x7fffffff;
const long long LINF = 0x3fffffffffffffff;
const long long SLINF = 0x7fffffffffffffff;
const int MAXN = 1007;

const char S[] = ".<>^v";

int n, m, tn, tm, A, B;
int g[MAXN][MAXN];

void init ();
void input ();
void work ();



int main ()
{
	init ();
	input ();
	work ();
}



void init ()
{
	// Init Everything Here

	ios::sync_with_stdio ( false );
}

void input ()
{
	// input method

	cin >> n >> m >> A >> B;
}

void work ()
{
	// main work

	tn = n, tm = m;
	if ( n & 1 ) {
		for ( int t = 1; t <= m && A; t += 2 ) {
			g[n][t] = 1, g[n][t + 1] = 2;
			--A;
		}
		--tn;
	}
	if ( m & 1 ) {
		for ( int t = 1; t <= n && B; t += 2 ) {
			g[t][m] = 3, g[t + 1][m] = 4;
			--B;
		}
		--tm;
	}

	for ( int i = 1; i <= tn && ( A || B ); i += 2 ) {
		for ( int j = 1; j <= tm && ( A || B ); j += 2 ) {
			if ( A ) {
				g[i][j] = 1, g[i][j + 1] = 2;
				--A;
				if ( A ) {
					g[i + 1][j] = 1, g[i + 1][j + 1] = 2;
					--A;
				}
			} else {
				g[i][j] = 3, g[i + 1][j] = 4;
				--B;
				if ( B ) {
					g[i][j + 1] = 3, g[i + 1][j + 1] = 4;
					--B;
				}
			}
		}
	}

	if ( A || B ) printf ( "NO\n" );
	else {
		printf ( "YES\n" );
		lpi ( i, 1, n ) {
			lpi ( j, 1, m ) putchar ( S[g[i][j]] );
			putchar ( '\n' );
		}
	}
}

Compiler output:
a.cc: In function 'void work()':
a.cc:72:17: error: reference to 'tm' is ambiguous
   72 |         tn = n, tm = m;
      |                 ^~
In file included from /usr/include/time.h:39,
                 from /usr/include/pthread.h:23,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/gthr-default.h:35,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/gthr.h:157,
                 from /usr/include/c++/14/ext/atomicity.h:35,
                 from /usr/include/c++/14/bits/ios_base.h:39,
                 from /usr/include/c++/14/streambuf:43,
                 from /usr/include/c++/14/bits/streambuf_iterator.h:35,
                 from /usr/include/c++/14/iterator:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:54,
                 from a.cc:1:
/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h:7:8: note: candidates are: 'struct tm'
    7 | struct tm
      |        ^~
a.cc:36:15: note:                 'int tm'
   36 | int n, m, tn, tm, A, B;
      |               ^~
a.cc:85:19: error: reference to 'tm' is ambiguous
   85 |                 --tm;
      |                   ^~
/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h:7:8: note: candidates are: 'struct tm'
    7 | struct tm
      |        ^~
a.cc:36:15: note:                 'int tm'
   36 | int n, m, tn, tm, A, B;
      |               ^~
a.cc:89:39: error: reference to 'tm' is ambiguous
   89 |                 for ( int j = 1; j <= tm && ( A || B ); j += 2 ) {
      |                                       ^~
/usr/include/x86_64-linux-gnu/bits/types/struct_tm.h:7:8: note: candidates are: 'struct tm'
    7 | struct tm
      |        ^~
a.cc:36:15: note:                 'int tm'
   36 | int n, m, tn, tm, A, B;
      |               ^~