#include <bits/stdc++.h>
#define PB push_back
#define MP make_pair
#define REP(i,n) for (int i=0;i<(n);i++)
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define ALL(a) (a).begin(),(a).end()
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> P;
const ll MOD=1e9+7;
int main(){
      ll n,ans=0,c,d;
      cin>>n;
      REP(i,n){
            cin>>c>>d;
            cout<<c<<" "<<d<<endl;
            ans+=(c+1)/2*d;
            ans%=MOD;
            cout<<ans<<endl;
      }
      cout<<(ans+MOD)%MOD<<endl;
}