#include <bits/stdc++.h>
#define rep(i, a, n) for(int i = a; i < n; i++)
#define repb(i, a, b) for(int i = a; i >= b; i--)
#define all(a) a.begin(), a.end()
#define o(a) cout << a << endl
#define int long long
#define fi first
#define se second
using namespace std;
typedef pair<int, int> P;

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

signed main(){
    int n, V;
    cin >> n;
    rep(i, 0, n){
        cin >> v[i] >> w[i];
    }
    cin >> V;
    rep(i, 0, n){
        repb(j, 100000, 0){
            if(j - w[i] < 0) continue;
            dp[j] = max(dp[j], dp[j - w[i]] + v[i]);
        }
    }
    int l = -1, r = 1;
    rep(i, 1, 100001){
        if(dp[i] == V){
            if(l == -1) l = i;
            r = i;
        }
    }
    l = max((int)1, l);
    cout << l << endl;
    if(r == 100000) cout << "inf" << endl;
    else cout << r << endl;
}