#include <bits/stdc++.h>
using namespace std;
const long long MOD = 1000000007;
int main(){
  int K;
  cin >> K;
  vector<int> D(K), L(K);
  for (int i = 0; i < K; i++){
    cin >> D[i] >> L[i];
    L[i] %= 6;
  }
  vector<vector<long long>> dp(K + 1, vector<long long>(7, 0));
  dp[0][0] = 1;
  for (int i = 0; i < K; i++){
    for (int j = 0; j < 7; j++){
      dp[i + 1][j] += dp[i][j];
      dp[i + 1][j] %= MOD;
      int j2 = j;
      for (int k = 0; k < L[i]; k++){
        j2 = (j2 * 10 + D[i]) % 7;
      }
      dp[i + 1][j2] += dp[i][j];
      dp[i + 1][j2] %= MOD;
    }
  }
  long long ans = 0;
  for (int i = 0; i < 7; i++){
    ans += dp[K][i] * i % MOD;
  }
  cout << ans << endl;
}