import java.io.*; import java.util.*; import java.util.stream.*; public class Main { static final int MOD = 1000000007; public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); long[][][] matrix = new long[60][2][2]; matrix[0] = new long[][]{{0, 1}, {1, 1}}; for (int i = 1; i < 60; i++) { for (int a = 0; a < 2; a++) { for (int b = 0; b < 2; b++) { for (int c = 0; c < 2; c++) { matrix[i][a][c] += matrix[i - 1][a][b] * matrix[i - 1][b][c] % MOD; matrix[i][a][c] %= MOD; } } } } long total = 1; while (n-- > 0) { long c = sc.nextLong(); long[] ans = new long[]{1, 2}; for (int i = 59; i >= 0; i--) { if (c < (1L << i)) { continue; } c -= (1L << i); long[] next = new long[2]; for (int a = 0; a < 2; a++) { for (int b = 0; b < 2; b++) { next[a] += matrix[i][a][b] * ans[b] % MOD; next[a] %= MOD; } } ans = next; } long x = ans[0]; long current = 1; char[] inputs = sc.next().toCharArray(); for (int i = inputs.length - 1; i >= 0; i--) { current *= pow(x, inputs[i] - '0'); current %= MOD; x = pow(x, 10); } total *= current; total %= MOD; } System.out.println(total); } static long pow(long x, int p) { if (p == 0) { return 1; } else if (p % 2 == 0) { return pow(x * x % MOD, p / 2); } else { return pow(x, p - 1) * x % MOD; } } } class Utilities { static String arrayToLineString(Object[] arr) { return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n")); } static String arrayToLineString(int[] arr) { return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new)); } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); StringBuilder sb = new StringBuilder(); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public double nextDouble() throws Exception { return Double.parseDouble(next()); } public int[] nextIntArray() throws Exception { return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray(); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }