#include <bits/stdc++.h>
#include "testlib.h"
 
using namespace std;
 
int w[3010][3010], T[3010];
 
int main(int argc, char **argv) {
	registerGen(argc, argv, 1);
 
 
	int n = atoi(argv[1]);
 
 
	printf("%d\n", n);
 
	for (int i = 0; i < n; i++) {
		for (int j = i + 1; j < n; j++) {
			int ck = 0;
			if (i >= n - 3) {
				ck = (j - i) % 2;
			}
			else if(j >= n - 3) {
				ck = 0;
			}
			else {
				ck = rnd.next(0, 1);
			}
			w[i][j] = ck, w[j][i] = 1-ck;
		}
	}
 
	int i;
	for (i = 0; i < n; i++)T[i] = i;
	//shuffle(T, T + n);
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			printf("%c", i == j ? '-' : "LW"[w[T[i]][T[j]]]);
		}
		puts("");
	}
}
 

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