#include <iostream>
#include <stdio.h>
using namespace std;
int main() {
  int b[10],k[10],i,v1,v2;
  double h;
  while (scanf("%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d",&b[0],&b[1],&b[2],&b[3],&b[4],&b[5],&b[6],&b[7],&b[8],&b[9],&v1,&v2)!=EOF) {
    k[0]=b[0];
	for (i=1;i<10;i++) k[i]=k[i-1]+b[i];
	h=(double)k[9]*v1/(v1+v2);
	for (i=0;i<10;i++) if (h>=k[i]-b[i] && h<=k[i]) break;
	cout << i+1 << endl;
  }
  return 0;
  }
// God put a smile upon your face <3

#include <bits/stdc++.h>

#define slld(longvalue) scanf("%lld", &longvalue)

#define ll long long
#define ull unsigned long long
#define pll pair < long long, long long >

#define fastio ios_base:: sync_with_stdio(false); cin.tie(0); cout.tie(0)

#define pb push_back

#define bug printf("BUG\n")

#define mxlld LLONG_MAX
#define mnlld -LLONG_MAX

#define mxd 2e8
#define mnd -2e8

#define pi 3.14159265359

using namespace std;

bool check(ll n, ll pos)
{
	return n & (1LL << pos);
}

ll Set(ll n, ll pos)
{
	return n = n | (1LL << pos);
}

int main()
{
    ll i, j, k, l, m, n, o, r, q;
    ll testcase;
    ll input, flag, tag, ans;

//    freopen("input.txt", "r", stdin);

//    freopen("output.txt", "w", stdout);

    double rad;

    while(cin >> rad)
    {
		cout << setprecision(10) << fixed << 2.0 * acos(-1.0) * rad << "\n";
    }


}


