#include<iostream>
using namespace std;
int main(){
  char g;
  double len[11],total=0;
  double train1,train2;
  double a;
  while(1){
    total=0;
    for(int i=0;i<10;i++){
      cin >> len[i] >> g;
      total+=len[i];
    }
    cin >> train1 >> g >> train2;
    if(cin.eof()) break;
    a=total/(train1+train2);
    a*=train1;
    total=0;
    int i=0;
    while(a>total){
      total+=len[i];
      i++;
    }
    cout << i << endl;
  }
}