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

public class Main {
    static final int MOD = 1000000007;
    static long base;
    static HashMap<Long, Long> dp = new HashMap<>();
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        long[][] dp = new long[60][4];
        dp[0] = new long[]{1, 0, 0, 1};
        for (int i = 1; i < 60; i++) {
            for (int a = 0; a < 4; a++) {
                for (int b = 0; b < 4; b++) {
                    if (a % 2 == 1 && b >= 2) {
                        continue;
                    }
                    int idx = (a >> 1 << 1) + b % 2;
                    dp[i][idx] += dp[i - 1][a] * dp[i - 1][b] % MOD;
                    dp[i][idx] %= MOD;
                }
            }
        }
        long result = 1;
        while (n-- > 0) {
            long k = sc.nextLong();
            long[] ans = null;
            for (int i = 59; i >= 0; i--) {
                if (k < (1L << i)) {
                    continue;
                }
                k -= (1L << i);
                if (ans == null) {
                    ans = new long[4];
                    for (int a = 0; a < 4; a++) {
                        ans[a] = dp[i][a];
                    }
                    continue;
                }
                long[] next = new long[4];
                for (int a = 0; a < 4; a++) {
                    for (int b = 0; b < 4; b++) {
                        if (a % 2 == 1 && b >= 2) {
                            continue;
                        }
                        int idx = (a >> 1 << 1) + b % 2;
                        next[idx] += ans[a] * dp[i][b] % MOD;
                        next[idx] %= MOD;
                    }
                }
                ans = next;
            }
            result *= pow(getAmount(ans), sc.next().toCharArray());
            result %= MOD;
        }
        System.out.println(result);
    }
    
    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;
        }
    }
    
    static long pow(long x, char[] s) {
        long ans = 1;
        for (int i = s.length - 1; i >= 0; i--) {
            ans *= pow(x, s[i] - '0');
            ans %= MOD;
            x = pow(x, 10);
        }
        return ans;
    }
    
    static long getAmount(long[] arr) {
        long ans = 0;
        for (long x : arr) {
            ans += x;
            ans %= MOD;
        }
        return ans;
    }
}
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();
    }
    
}