public void solve() throws Exception {
int n = in.nextInt();
int[] a = new int[n];
int sum = 0;
for (int i = 0; i < n; i++) {
a[i] = in.nextInt();
sum += a[i];
}
sum /= 2;
boolean[] dp = new boolean[sum + 1];
dp[0] = true;
for (int tmp : a) {
for (int i = sum; i >= tmp; i--) {
if (dp[i - tmp]) {
dp[i] = true;
}
}
}
String ans = dp[sum] ? "YES" : "NO";
out.println(ans);
}
void run() {
Scanner sc = new Scanner(System.in);
int oo = sc.nextInt();
for (int o = 1; o <= oo; o++) {
que = new PriorityQueue<E>();
int n = sc.nextInt();
tank = new Tank();
count = 0;
int[] h = new int[n + 3], b = new int[n + 3];
h[0] = 100;
b[0] = 0;
h[n + 1] = 50;
b[n + 1] = 100;
h[n + 2] = 50;
b[n + 2] = INF;
for (int i = 1; i <= n; i++) {
b[i] = sc.nextInt();
h[i] = sc.nextInt();
}
n += 3;
for (int i = 1; i < n; i++) {
tank.bs.add(new Box(b[i - 1], b[i], h[i - 1], h[i], 0, 0));
}
int m = sc.nextInt();
for (int i = 0; i < m; i++) {
int f = sc.nextInt();
double a = sc.nextDouble() / 30;
for (Box box : tank.bs) {
if (box.b1 < f && f < box.b2) box.f += a;
}
}
debug(tank.bs);
int l = sc.nextInt();
res = new double[l];
for (int i = 0; i < l; i++) {
que.offer(new W(sc.nextInt(), sc.nextDouble(), i));
}
que.offer(tank.nextEvent());
debug(que.size());
while (!que.isEmpty()) {
if (res[0] < 0) System.exit(1);
que.poll().go();
debug(que.peek().time());
debug(tank.bs);
debug(res);
debug();
if (count == l) break;
}
for (double r : res) {
System.out.println(r);
}
}
}
public void run() {
// Scanner sc = new Scanner(System.in);
Scanner sc = new Scanner();
StringBuilder sb = new StringBuilder(1000000);
// System.setOut(new PrintStream(new BufferedOutputStream(System.out)));
final int N = sc.nextInt();
final int M = sc.nextInt();
final int K = (int) floor(sqrt(N));
final int[] A = new int[N + 1];
A[0] = 1;
for (int i = 1; i <= N; i++) A[i] = sc.nextInt();
final int[] next = new int[N + 1];
final int[] step = new int[N + 1];
final int[] last = new int[N + 1];
for (int i = N; i > 0; i--) {
int j = i + A[i];
if (j > N || j / K > i / K) {
last[i] = i;
step[i] = 1;
next[i] = j;
} else {
last[i] = last[j];
step[i] = step[j] + 1;
next[i] = next[j];
}
}
for (int t = 0; t < M; t++)
if (sc.nextInt() == 1) {
int i = sc.nextInt();
int j = 0;
int k = 0;
while (i <= N) {
j += step[i];
k = last[i];
i = next[i];
}
sb.append(k).append(' ').append(j).append('\n');
// System.out.println(k + " " + j);
} else {
int k = sc.nextInt();
int b = k / K * K;
A[k] = sc.nextInt();
for (int i = min(b + K - 1, N); i >= b; i--) {
int j = i + A[i];
if (j > N || j / K > i / K) {
last[i] = i;
step[i] = 1;
next[i] = j;
} else {
last[i] = last[j];
step[i] = step[j] + 1;
next[i] = next[j];
}
}
}
// System.out.flush();
System.out.print(sb);
}
protected String solve(Scanner sc) {
int N = sc.nextInt();
int K = sc.nextInt();
char[][] board = new char[N][];
for (int i = 0; i < N; i++) board[i] = sc.next().toCharArray();
char[][] rot = new char[N][N];
for (int i = 0; i < N; i++) for (int j = 0; j < N; j++) rot[i][j] = board[N - j - 1][i];
char[][] grav = new char[N][N];
for (int i = 0; i < N; i++) for (int j = 0; j < N; j++) grav[i][j] = '.';
for (int i = 0; i < N; i++)
for (int j = N - 1, c = 0; j >= 0; j--)
if (rot[j][i] == '.') c++;
else grav[j + c][i] = rot[j][i];
// for (char[] cs : grav)
// debug(new String(cs));
int[][][] R = new int[N][N][4];
int[][][] B = new int[N][N][4];
for (int i = 0; i < N; i++)
for (int j = 0; j < N; j++)
switch (grav[i][j]) {
case 'B':
{
for (int d = 0; d < 4; d++)
B[i][j][d] = (in(i + di[d], j + dj[d], N) ? B[i + di[d]][j + dj[d]][d] : 0) + 1;
break;
}
case 'R':
{
for (int d = 0; d < 4; d++)
R[i][j][d] = (in(i + di[d], j + dj[d], N) ? R[i + di[d]][j + dj[d]][d] : 0) + 1;
break;
}
}
boolean Rwin = false, Bwin = false;
for (int i = 0; i < N; i++)
for (int j = 0; j < N; j++)
for (int d = 0; d < 4; d++) {
if (R[i][j][d] >= K) Rwin = true;
if (B[i][j][d] >= K) Bwin = true;
}
return Rwin ? Bwin ? "Both" : "Red" : Bwin ? "Blue" : "Neither";
}
public void solve() throws Exception {
long a = in.nextLong();
long b = in.nextLong();
long ans = 0;
while (a != 0 && b != 0) {
if (a > b) {
ans += a / b;
a = a % b;
} else {
ans += b / a;
b = b % a;
}
}
out.println(ans);
}
public void diff(int id, String small, String large) {
try {
Scanner sm = new Scanner(new File(small));
Scanner lg = new Scanner(new File(large));
int line = 0;
while (sm.hasNextLine() && lg.hasNextLine()) {
String s = sm.nextLine();
String l = lg.nextLine();
if (!s.equals(l)) {
System.out.println(line + ">" + s);
System.out.println(line + "<" + l);
}
line++;
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
for (int N = sc.nextInt(); N > 0; N = sc.nextInt()) {
int M = sc.nextInt();
int L = sc.nextInt();
boolean[][] map = new boolean[N][N];
int[][] D = new int[N][N];
int[][] E = new int[N][N];
while (M-- > 0) {
int A = sc.nextInt() - 1;
int B = sc.nextInt() - 1;
map[A][B] = map[B][A] = true;
D[A][B] = D[B][A] = sc.nextInt();
E[A][B] = E[B][A] = sc.nextInt();
}
boolean[][] visited = new boolean[N][L + 1];
Queue<Edge> q = new PriorityQueue<Edge>();
q.offer(new Edge(0, 0, L));
while (!q.isEmpty()) {
Edge e = q.poll();
if (visited[e.to][e.money]) continue;
visited[e.to][e.money] = true;
if (e.to == N - 1) {
System.out.println(e.enemy);
break;
}
for (int i = 0; i < N; i++)
if (map[e.to][i]) {
if (D[e.to][i] <= e.money) q.offer(new Edge(e.enemy, i, e.money - D[e.to][i]));
q.offer(new Edge(e.enemy + E[e.to][i], i, e.money));
}
}
}
}
public void solve() throws Exception {
n = in.nextInt();
m = in.nextInt();
graph = new char[n][m];
cracked = new boolean[n][m];
for (int i = 0; i < n; i++) {
graph[i] = in.next().trim().toCharArray();
}
sx = in.nextInt() - 1;
sy = in.nextInt() - 1;
gx = in.nextInt() - 1;
gy = in.nextInt() - 1;
cracked[sx][sy] = true;
if (sx == gx && sy == gy) {
if (graph[sx][sy] == 'X') {}
}
int scount = 0;
for (int i = 0; i < 4; i++) {
int nx = sx + dx[i];
int ny = sy + dy[i];
if (nx < 0 || nx > n - 1 || ny < 0 || ny > m - 1) {
continue;
}
if (graph[nx][ny] == '.') {
scount++;
}
}
int gcount = 0;
for (int i = 0; i < 4; i++) {
int nx = gx + dx[i];
int ny = gy + dy[i];
if (nx < 0 || nx > n - 1 || ny < 0 || ny > m - 1) {
continue;
}
if (graph[nx][ny] == '.') {
gcount++;
}
}
boolean isNeighbors = false;
for (int i = 0; i < 4 && !isNeighbors; i++) {
int nx = sx + dx[i];
int ny = sy + dy[i];
if (nx < 0 || nx > n - 1 || ny < 0 || ny > m - 1) {
continue;
}
if (nx == gx && ny == gy) {
isNeighbors = true;
}
}
if (sx == gx && sy == gy) {
if (graph[sx][sy] == 'X') {
if (scount >= 1) {
out.println("YES");
} else {
out.println("NO");
}
} else {
if (scount >= 2) {
out.println("YES");
} else {
out.println("NO");
}
}
} else if (isNeighbors) {
if (graph[gx][gy] == 'X') {
out.println("YES");
} else {
if (gcount >= 1) {
out.println("YES");
} else {
out.println("NO");
}
}
} else if (dfs(sx, sy)) {
if (graph[gx][gy] == 'X') {
out.println("YES");
} else {
if (gcount >= 2) {
out.println("YES");
} else {
out.println("NO");
}
}
} else {
out.println("NO");
}
}
public void run() {
Scanner sc = new Scanner(System.in);
int T = sc.nextInt();
sc.nextLine();
for (int t = 1; t <= T; t++) System.out.printf("Case #%s: %s%n", t, solve(sc));
}