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();
    }
    
}