import java.io.*;
import java.util.*;


public class Main {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		final int MOD = 1_000_000_007;

		int n = sc.nextInt();
		long k = sc.nextLong();

		// AT
		int[][] a = sc.nextIntArrays(n, n);
		
		int[] x = new int[n];
		Arrays.fill(x, 1);

		long loop = k;
		while (loop > 0) {
			if (loop % 2 == 1) {
				x = Matrix.mul(a, x, MOD);
			}
			a = Matrix.mul(a, a, MOD);
			loop /= 2;
		}

		long ans = 0;
		for (int e : x) {
			ans += e;
			ans %= MOD;
		}
	
		pr.println(ans);
	}
	
	static class Matrix {
		static int[] mul(int[][] a, int[] x, int MOD) {
			// これを超えるまではMODを取らない。
			long INF = Long.MAX_VALUE - (long)(MOD - 1) * (MOD - 1);
			
			int m = a.length;
			int n = a[0].length;
			if (n != x.length) {
				throw new IllegalArgumentException();
			}

			int[] y = new int[m];
			for (int i = 0; i < m; i++) {
				long tmp = 0;
				for (int j = 0; j < n; j++) {
					tmp += (long)a[i][j] * x[j];
					if (tmp > INF) tmp %= MOD;
				}
				y[i] = (int)(tmp % MOD);
			}

			return y;
		}

		static int[][] mul(int[][] a, int[][] a2, int MOD) {
			// これを超えるまではMODを取らない。
			long INF = Long.MAX_VALUE - (long)(MOD - 1) * (MOD - 1);

			int m = a.length;
			int n = a2[0].length;
			int l = a[0].length;
			if (l != a2.length) {
				throw new IllegalArgumentException();
			}

			int[][] y = new int[m][n];
			for (int j = 0; j < n; j++) {
				long[] tmp2 = new long[n];
				for (int k = 0; k < n; k++) {
					tmp2[k] = a2[k][j];
				}
				for (int i = 0; i < m; i++) {
					long tmp = 0;
					for (int k = 0; k < l; k++) {
//						tmp += (long)a[i][k] * a2[k][j];
						tmp += a[i][k] * tmp2[k];
						if (tmp > INF) tmp %= MOD;
					}
					y[i][j] = (int)(tmp % MOD);
				}
			}

			return y;
		}

		static int[][] getI(int n) {
			int[][] mat = new int[n][];
			for (int i = 0; i < n; i++) {
				mat[i] = new int[n];
				mat[i][i] = 1;
			}

			return mat;
		}
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		pr = new Printer(System.out);
			
		solve();
			
		pr.close();
		sc.close();
	}

	static class Scanner {
		BufferedReader br;

		Scanner (InputStream in) {
			br = new BufferedReader(new InputStreamReader(in));
		}

		private boolean isPrintable(int ch) {
			return ch >= '!' && ch <= '~';
		}

		private boolean isCRLF(int ch) {
			return ch == '\n' || ch == '\r' || ch == -1;
		}

		private int nextPrintable() {
			try {
				int ch;
				while (!isPrintable(ch = br.read())) {
					if (ch == -1) {
						throw new NoSuchElementException();
					}
				}

				return ch;
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}

		String next() {
			try {
				int ch = nextPrintable();
				StringBuilder sb = new StringBuilder();
				do {
					sb.appendCodePoint(ch);
				} while (isPrintable(ch = br.read()));

				return sb.toString();
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}

		int nextInt() {
			try {
				// parseInt from Integer.parseInt()
				boolean negative = false;
				int res = 0;
				int limit = -Integer.MAX_VALUE;
				int radix = 10;

				int fc = nextPrintable();
				if (fc < '0') {
					if (fc == '-') {
						negative = true;
						limit = Integer.MIN_VALUE;
					} else if (fc != '+') {
						throw new NumberFormatException();
					}
					fc = br.read();
				}
				int multmin = limit / radix;

				int ch = fc;
				do {
					int digit = ch - '0';
					if (digit < 0 || digit >= radix) {
						throw new NumberFormatException();
					}
					if (res < multmin) {
						throw new NumberFormatException();
					}
					res *= radix;
					if (res < limit + digit) {
						throw new NumberFormatException();
					}
					res -= digit;

				} while (isPrintable(ch = br.read()));

				return negative ? res : -res;
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}

		long nextLong() {
			try {
				// parseLong from Long.parseLong()
				boolean negative = false;
				long res = 0;
				long limit = -Long.MAX_VALUE;
				int radix = 10;

				int fc = nextPrintable();
				if (fc < '0') {
					if (fc == '-') {
						negative = true;
						limit = Long.MIN_VALUE;
					} else if (fc != '+') {
						throw new NumberFormatException();
					}
					fc = br.read();
				}
				long multmin = limit / radix;

				int ch = fc;
				do {
					int digit = ch - '0';
					if (digit < 0 || digit >= radix) {
						throw new NumberFormatException();
					}
					if (res < multmin) {
						throw new NumberFormatException();
					}
					res *= radix;
					if (res < limit + digit) {
						throw new NumberFormatException();
					}
					res -= digit;

				} while (isPrintable(ch = br.read()));

				return negative ? res : -res;
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}

		float nextFloat() {
			return Float.parseFloat(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			try {
				int ch;
				while (isCRLF(ch = br.read())) {
					if (ch == -1) {
						throw new NoSuchElementException();
					}
				}
				StringBuilder sb = new StringBuilder();
				do {
					sb.appendCodePoint(ch);
				} while (!isCRLF(ch = br.read()));

				return sb.toString();
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}
		
		int[] nextIntArray(int n) {
			int[] ret = new int[n];
			for (int i = 0; i < n; i++) {
				ret[i] = sc.nextInt();
			}
			
			return ret;
		}

		long[] nextLongArray(int n) {
			long[] ret = new long[n];
			for (int i = 0; i < n; i++) {
				ret[i] = sc.nextLong();
			}
			
			return ret;
		}

		int[][] nextIntArrays(int m, int n) {
			int[][] ret = new int[m][n];
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					ret[j][i] = sc.nextInt();
				}
			}
			
			return ret;
		}

		void close() {
			try {
				br.close();
			} catch (IOException e) {
//				throw new NoSuchElementException();
			}
		}
	}

	static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
		
		void printInts(int... a) {
			StringBuilder sb = new StringBuilder(32);
			for (int i = 0, size = a.length; i < size; i++) {
				if (i > 0) {
					sb.append(' ');
				}
				sb.append(a[i]);
			}

			println(sb);
		}
		
		void printLongs(long... a) {
			StringBuilder sb = new StringBuilder(64);
			for (int i = 0, size = a.length; i < size; i++) {
				if (i > 0) {
					sb.append(' ');
				}
				sb.append(a[i]);
			}

			println(sb);
		}
		
		void printStrings(String... a) {
			StringBuilder sb = new StringBuilder(32);
			for (int i = 0, size = a.length; i < size; i++) {
				if (i > 0) {
					sb.append(' ');
				}
				sb.append(a[i]);
			}

			println(sb);
		}
	}
}


Measured memory_bytes: 25268