#include<iostream>
#include<algorithm>
#include<utility>
using namespace std;

int v[110], w[110];
int dp[110][100010]; 

pair<int, int> solve(int n, int V, pair<int, int>P)
{
	P = make_pair(1000000, 0);
	for (int i = 1; i <= n; i++)
	{
		for (int j = 1; j <= 100001; j++)
		{
			if (j < w[i]) dp[i][j] = dp[i - 1][j];
			else dp[i][j] = max(dp[i - 1][j], dp[i - 1][j - w[i]] + v[i]);

			if (dp[i][j] == V)
			{
				P.first = min(P.first, j);
				P.second = max(P.second, j);
			}
		}
	}
	return P;
}

int main()
{
	int n, V;
	pair<int, int> P;

	cin >> n;

	for (int i = 1; i <= n; i++) cin >> v[i] >> w[i];

	cin >> V;

	cout << solve(n, V, P).first << endl;
	if(solve(n, V, P).second != 100001) cout << solve(n, V, P).second << endl;
	else cout << "inf" << endl;
}