#define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES

#include <bits/stdc++.h>
using namespace std;
using i32 = int; using i64 = long long int; using f64 = double; using str = string;
template <typename T> using vec = vector<T>;
template <typename T> using heap = priority_queue<T>;
void in() {}; template <typename T, typename...TS> void in(T &&x, TS &&...xs) { cin>>x; in(move(xs)...); };
template <typename T> void _out(const char *sep, const char *end, T &&x) { cout<<x<<end; };
template <typename T, typename...TS> void _out(const char *sep, const char *end, T &&x, TS &&...xs) { cout<<x<<sep; _out(sep, end, move(xs)...); }
#define indef(t, ...) t __VA_ARGS__; in(__VA_ARGS__)
#define get(t) []{ t _; cin >> _; return _; }()
#define put(...) _out("", "", __VA_ARGS__)
#define out(...) _out(" ", "\n", __VA_ARGS__)
#define times(n, i) for (i32 i =  0 ; i <  (n); ++i)
#define range(a, b, i) for (i32 i = (a); i <  (b); ++i)
#define upto(a, b, i) for (i32 i = (a); i <= (b); ++i)
#define downto(a, b, i) for (i32 i = (a); i >= (b); --i)
#define all(xs) (xs).begin(), (xs).end()
#define sortall(xs) sort(all(xs))
#define reverseall(xs) reverse(all(xs))
#define even(x) (((x) & 1) == 0)
#define odd(x) (((x) & 1) == 1)
#define append emplace_back
#define findge lower_bound
#define findgt upper_bound
const i64 MOD = 1000000007;
const f64 EPS = 1e-10;

i64 n, m;
i64 v[100], w[100];
i64 dp[101][100001];

i32 main()
{
    in(n);
    i64 allw = 0;
    times(n, i) {
        in(v[i], w[i]);
        allw += w[i];
    }
    in(m);

    upto(1, 100000, wi) {
        upto(1, n, ni) {
            if (wi >= w[ni-1]) {
                dp[ni][wi] = max(dp[ni-1][wi], dp[ni-1][wi-w[ni-1]] + v[ni-1]);
            }
            else {
                dp[ni][wi] = dp[ni-1][wi];
            }
        }
    }

    i64 low = 0, high = 0;
    upto(1, allw, wi) {
        if (dp[n][wi] == m) {
            low = wi;
            break;
        }
    }
    upto(low+1, allw, wi) {
        if (dp[n][wi] != m) {
            high = wi-1;
            break;
        }
    }
    out(low);
    if (high < low || high == allw) {
        out("inf");
    }
    else {
        out(high);
    }

    return 0;
}