Problem p02623 (C++) — buggy submission, verdict: Runtime Error

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef double db;
typedef string str;

typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<db, db> pd;

typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<ll> vl;
typedef vector<db> vd;
typedef vector<str> vs;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<pd> vpd;

typedef set<int> si;
typedef set<ll> sl;
typedef map<int, int> mii;

#define mp make_pair
#define f first
#define s second
#define sz(x) (int)x.size()
#define len(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend()
#define rsz resize
#define ins insert
#define ft front()
#define bk back()
// #define pf push_front
// #define pb push_back
#define eb emplace_back
#define ep emplace
#define lb lower_bound
#define ub upper_bound

#define vfor(i, a, b) for (int i = (a); i < (b); ++i)
#define f0r(i, a) vfor(i, 0, a)
#define rof(i, a, b) for (int i = (b)-1; i >= (a); --i)
#define r0f(i, a) rof(i, 0, a)
#define trav(a, x) for (auto &a : x)
#define def(fname, rtype, args, ...)                                           \\
  function<rtype args> fname = [__VA_ARGS__] args

#define boost() cin.tie(0), cin.sync_with_stdio(0)

template <class T>
void binstf(T &found, T a, T b, function<bool(T)> test, bool TF = true) {
  T i = a, j = b;
  bool da = test(a), db = test(b);
  if ((da != TF) or (db == TF)) {
    cerr << "---[BS: TF = " << TF << "]---" << endl;
    cerr << a << "->" << da << endl;
    cerr << b << "->" << db << endl;
  }
  while (j - i > 1) {
    T m = (i + j) / 2;
    if (test(m) == TF)
      i = m;
    else
      j = m;
  }
  found = i;
  if (not TF)
    found++;
}

#define binsft(a, b, c, d) binstf(a, b, c, d, false);

template <class T> T dpow(T a, T power) {
  T result = 1;
  while (power) {
    if (power % 2)
      result *= a;
    power /= 2, a = a * a;
  }
  return result;
}

const ld PI = acos((ld)-1);
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count());

template <class T> bool ckmin(T &a, const T &b) { return b < a ? a = b, 1 : 0; }

template <class T> bool ckmax(T &a, const T &b) { return a < b ? a = b, 1 : 0; }

template <class T> bool reorder(T &a, T &b) {
  return (a > b) ? swap(a, b), 1 : 0;
}

// INPUT
template <class A> void re(complex<A> &c);

template <class A, class B> void re(pair<A, B> &p);

template <class A> void re(vector<A> &v);

template <class A, size_t SZ> void re(array<A, SZ> &a);

#define ore(type, x)                                                           \\
  type x;                                                                      \\
  re(x);
#define ire(x) ore(int, x);
#define vire(x) ore(vi, x);
#define lre(x) ore(ll, x);

template <class T> void re(T &x) { cin >> x; }

void re(db &d) {
  str t;
  re(t);
  d = stod(t);
}

void re(ld &d) {
  str t;
  re(t);
  d = stold(t);
}

template <class H, class... T> void re(H &h, T &...t) {
  re(h);
  re(t...);
}

template <class A> void re(complex<A> &c) {
  A a, b;
  re(a, b);
  c = {a, b};
}

template <class A, class B> void re(pair<A, B> &p) { re(p.f, p.s); }

template <class A> void re(vector<A> &x) { trav(a, x) re(a); }

template <class A, size_t SZ> void re(array<A, SZ> &x) { trav(a, x) re(a); }

template <class T> T gcd(T a, T b) {
  a = a < 0 ? -a : a;
  b = b < 0 ? -b : b;
  if (a * b == 0)
    return max(a, b);
  else
    return gcd(min(a, b), max(a, b) % min(a, b));
}

const int MODE107 = 1000000007;

template <class T> T modop(T a, T mode = MODE107) {
  a = a % mode;
  if (a < 0)
    a += mode;
  return a;
}

const int uplrDX[] = {-1, 1, 0, 0};
const int uplrDY[] = {0, 0, -1, 1};

#define ts to_string

str ts(char c) { return str(1, c); }

str ts(bool b) { return b ? "true" : "false"; }

str ts(const char *s) { return (str)s; }

str ts(str s) { return s; }

template <class A> str ts(complex<A> c) {
  stringstream ss;
  ss << c;
  return ss.str();
}

str ts(vector<bool> v) {
  str res = "{";
  f0r(i, sz(v)) res += char('0' + v[i]);
  res += "}";
  return res;
}

template <size_t SZ> str ts(bitset<SZ> b) {
  str res = "";
  f0r(i, SZ) res += char('0' + b[i]);
  return res;
}

template <class A, class B> str ts(pair<A, B> p);

template <class T> str ts(T v) { // containers with begin(), end()
  bool fst = 1;
  str res = "{";
  for (const auto &x : v) {
    if (!fst)
      res += ", ";
    fst = 0;
    res += ts(x);
  }
  res += "}";
  return res;
}

template <class A, class B> str ts(pair<A, B> p) {
  return "(" + ts(p.f) + ", " + ts(p.s) + ")";
}

// OUTPUT
template <class A> void pr(A x) { cout << ts(x); }

template <class H, class... T> void pr(const H &h, const T &...t) {
  pr(h);
  pr(t...);
}

void ps() { pr("\\n"); } // print w/ spaces
template <class H, class... T> void ps(const H &h, const T &...t) {
  pr(h);
  if (sizeof...(t))
    pr(" ");
  ps(t...);
}

// DEBUG
void DBG() { cerr << "]" << endl; }

template <class H, class... T> void DBG(H h, T... t) {
  cerr << ts(h);
  if (sizeof...(t))
    cerr << ", ";
  DBG(t...);
}

#ifdef LOCAL // compile with -DLOCAL
#define dbg(...)                                                               \\
  cerr << "LINE(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [",           \\
      DBG(__VA_ARGS__)
#else
#define dbg(...) 0
#endif

// REINITIALIZE ARRAYS BETWEEN TCs

/**
 * Description: Use in place of \\texttt{complex<T>}.
 * Source: http://codeforces.com/blog/entry/22175, KACTL
 * Verification: various
 */

typedef int T;

int sgn(T a) { return (a > 0) - (a < 0); }

T sq(T a) { return a * a; }

namespace Point {
typedef pair<T, T> P;
typedef vector<P> vP;

T norm(const P &p) { return sq(p.f) + sq(p.s); }

T abs(const P &p) { return sqrt(norm(p)); }

T arg(const P &p) { return atan2(p.s, p.f); }

P conj(const P &p) { return P(p.f, -p.s); }

P perp(const P &p) { return P(-p.s, p.f); }

P dir(T ang) { return P(cos(ang), sin(ang)); }

P operator-(const P &l) { return P(-l.f, -l.s); }

P operator+(const P &l, const P &r) { return P(l.f + r.f, l.s + r.s); }

P operator-(const P &l, const P &r) { return P(l.f - r.f, l.s - r.s); }

P operator*(const P &l, const T &r) { return P(l.f * r, l.s * r); }

P operator*(const T &l, const P &r) { return r * l; }

P operator/(const P &l, const T &r) { return P(l.f / r, l.s / r); }

P operator*(const P &l, const P &r) {
  return P(l.f * r.f - l.s * r.s, l.s * r.f + l.f * r.s);
}

P operator/(const P &l, const P &r) { return l * conj(r) / norm(r); }

P &operator+=(P &l, const P &r) { return l = l + r; }

P &operator-=(P &l, const P &r) { return l = l - r; }

P &operator*=(P &l, const T &r) { return l = l * r; }

P &operator/=(P &l, const T &r) { return l = l / r; }

P &operator*=(P &l, const P &r) { return l = l * r; }

P &operator/=(P &l, const P &r) { return l = l / r; }

P unit(const P &p) { return p / abs(p); }

T dot(const P &a, const P &b) { return a.f * b.f + a.s * b.s; }

T cross(const P &a, const P &b) { return a.f * b.s - a.s * b.f; }

T cross(const P &p, const P &a, const P &b) { return cross(a - p, b - p); }

P reflect(const P &p, const P &a, const P &b) {
  return a + conj((p - a) / (b - a)) * (b - a);
}

P foot(const P &p, const P &a, const P &b) {
  return (p + reflect(p, a, b)) / (T)2;
}

bool onSeg(const P &p, const P &a, const P &b) {
  return cross(a, b, p) == 0 && dot(p - a, p - b) <= 0;
}

ostream &operator<<(ostream &os, const P &p) {
  return os << "(" << p.f << "," << p.s << ")";
}
}; // namespace Point

// using namespace Point;

typedef unsigned long long ull;

class trie {
public:
  map<char, trie> l;

  void add(string t) {
    if (t.length() > 0) {
      l[t[0]].add(t.substr(1));
    }
  }

  bool contains(string t) {
    if (not l.count(t[0]))
      return false;
    return l[t[0]].contains(t.substr(1));
  }
};

template <class T> class rq {
  /* range query
   */
  vector<vector<T>> content;
  function<T(T, T)> op;

public:
  rq(vector<T> &orig, function<T(T, T)> operation) {
    op = operation;
    int size = 1;
    content.emplace_back(orig);
    while (size < orig.size()) {
      size *= 2;
      content.emplace_back(0);
      auto &todo = content.back(), &from = content[content.size() - 2];
      f0r(i, sz(from) - size / 2) {
        todo.eb(op(from[i],
                   from[i + size / 2])); //[i ~ i+s[ = [i, i+s/2[ + [i+s/2,i+s[
      }
    }
  }

  T query(int i, int j) { //[i,j[
    if (j <= i or j > content[0].size() or i < 0 or i >= content[0].size()) {
      cerr << "i=" << i << endl;
      cerr << "j=" << j << endl;
      throw "bad i j";
    }
    tie(i, j) = mp(min(i, j), max(i, j));
    int size = 1, pow = 0;
    while (size * 2 < j - i) {
      size *= 2, pow++;
    }
    assert(pow < content.size());
    auto &c = content[pow];
    assert(i < c.size() and i >= 0);
    assert(j - size < c.size() and j - size >= 0);
    T dbg = op(content[pow][i], content[pow][j - size]);
    return dbg;
  }
};

template <class T> class maxflow {
public:
  typedef T unit;
  int src, drn; // source and drain node id
  vector<vi> adj, radj;
  map<pi, unit> lims;
  map<pi, unit> rlims; // will contain solution after solve()
  void genradj() {
    radj.resize(sz(adj));
    f0r(from, sz(adj)) {
      trav(to, adj[from]) { radj[to].emplace_back(from); }
    }
  }

  unit solve() {
    while (true) {
      map<int, pair<pi, unit>> backtrack;
      bool found = false;
      set<int> seen; // bfs from src
      queue<pair<int, unit>> todo;
      todo.emplace(src, -1);
      while (not todo.empty()) {
        int from = todo.front().f;
        unit bottleneck = todo.front().s;
        todo.pop();
        if (from == drn) {
          found = true;
          break;
        }
        trav(to, adj[from]) {
          pi edge = mp(from, to);
          unit bn = min(bottleneck, lims[edge]);
          if (bn and not seen.count(to)) {
            seen.emplace(to);
            todo.emplace(to, bn);
            backtrack[to] = mp(edge, bn);
          }
        }

        trav(to, radj[from]) {
          pi edge = mp(to, from);
          unit bn = min(bottleneck, rlims[edge]);
          if (bn and not seen.count(to)) {
            seen.emplace(to);
            todo.emplace(to, bn);
            backtrack[to] = mp(edge, bn);
          }
        }
      }
      if (not found)
        break;
      else {
        list<pi> edges;
        int to = drn;
        unit flow = backtrack[to].second;
        while (to != src) {
          pi edge = backtrack[to].f;
          int from = edge.f + edge.s - to;
          edges.emplace_front(edge);
          to = from;
        }
        int from = src;
        trav(e, edges) {
          if (e.f == from)
            rlims[e] += flow, lims[e] -= flow;
          else
            rlims[e] -= flow, lims[e] += flow;
          from = e.f + e.s - from;
        }
      }
    }
    unit res = 0;
    trav(to, adj[src]) res += rlims[mp(src, to)];
    return res;
  }
};

void precalc() {
  // start here
}

void solve(int ti) {
  // start here
  int n, m, k;
  re(n, m, k);
  vl a(n), b(m);
  re(a, b);
  vl cuma = {0}, cumb = {0};
  trav(aa, a) cuma.emplace_back(cuma.back() + aa);
  trav(bb, b) cumb.emplace_back(cumb.back() + bb);
  int ai = 0, bi = 0, most = 0;
  while (bi < sz(cumb) and cumb[bi] <= k)
    bi++;
  for (ai = 0; ai < sz(cuma) and cuma[ai] <= k; ai++) {
    ll left = k - cuma[ai];
    while (bi >= 0 and (bi >= sz(cumb) or cumb[bi] > left))
      bi--;
    ckmax(most, ai + bi);
  }
  ps(most);
}

int main() {
  precalc();
  bool online = true;
#ifdef OFFLINE
  online = false;
  if (online)
    boost();
  string testinputs[] = {
      R"(
5 5 14
5 5 5 5 5
5 5 5 5 5

)",
      //            R"(3 2
      // 1 1 0
      // 1 2
      // 1 3
      //
      //)",
  }; // TODO
  trav(testinput, testinputs) {
    istringstream iss(testinput);
    cout << "---local mode---" << endl;
    cin.rdbuf(iss.rdbuf());
#endif
    // setIO("A");
    int T = 1;
    {
      //            re(T);
    }
    vfor(i, 1, T + 1) {
      //        cout << "Case #" << i << ": ";//Google Code jam
      solve(i);
    }

#ifdef OFFLINE
  }
#endif
}

Error: 0

Fixed submission:

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef double db;
typedef string str;

typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<db, db> pd;

typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<ll> vl;
typedef vector<db> vd;
typedef vector<str> vs;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<pd> vpd;

typedef set<int> si;
typedef set<ll> sl;
typedef map<int, int> mii;

#define mp make_pair
#define f first
#define s second
#define sz(x) (int)x.size()
#define len(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend()
#define rsz resize
#define ins insert
#define ft front()
#define bk back()
// #define pf push_front
// #define pb push_back
#define eb emplace_back
#define ep emplace
#define lb lower_bound
#define ub upper_bound

#define vfor(i, a, b) for (int i = (a); i < (b); ++i)
#define f0r(i, a) vfor(i, 0, a)
#define rof(i, a, b) for (int i = (b)-1; i >= (a); --i)
#define r0f(i, a) rof(i, 0, a)
#define trav(a, x) for (auto &a : x)
#define def(fname, rtype, args, ...)                                           \\
  function<rtype args> fname = [__VA_ARGS__] args

#define boost() cin.tie(0), cin.sync_with_stdio(0)

template <class T>
void binstf(T &found, T a, T b, function<bool(T)> test, bool TF = true) {
  T i = a, j = b;
  bool da = test(a), db = test(b);
  if ((da != TF) or (db == TF)) {
    cerr << "---[BS: TF = " << TF << "]---" << endl;
    cerr << a << "->" << da << endl;
    cerr << b << "->" << db << endl;
  }
  while (j - i > 1) {
    T m = (i + j) / 2;
    if (test(m) == TF)
      i = m;
    else
      j = m;
  }
  found = i;
  if (not TF)
    found++;
}

#define binsft(a, b, c, d) binstf(a, b, c, d, false);

template <class T> T dpow(T a, T power) {
  T result = 1;
  while (power) {
    if (power % 2)
      result *= a;
    power /= 2, a = a * a;
  }
  return result;
}

const ld PI = acos((ld)-1);
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count());

template <class T> bool ckmin(T &a, const T &b) { return b < a ? a = b, 1 : 0; }

template <class T> bool ckmax(T &a, const T &b) { return a < b ? a = b, 1 : 0; }

template <class T> bool reorder(T &a, T &b) {
  return (a > b) ? swap(a, b), 1 : 0;
}

// INPUT
template <class A> void re(complex<A> &c);

template <class A, class B> void re(pair<A, B> &p);

template <class A> void re(vector<A> &v);

template <class A, size_t SZ> void re(array<A, SZ> &a);

#define ore(type, x)                                                           \\
  type x;                                                                      \\
  re(x);
#define ire(x) ore(int, x);
#define vire(x) ore(vi, x);
#define lre(x) ore(ll, x);

template <class T> void re(T &x) { cin >> x; }

void re(db &d) {
  str t;
  re(t);
  d = stod(t);
}

void re(ld &d) {
  str t;
  re(t);
  d = stold(t);
}

template <class H, class... T> void re(H &h, T &...t) {
  re(h);
  re(t...);
}

template <class A> void re(complex<A> &c) {
  A a, b;
  re(a, b);
  c = {a, b};
}

template <class A, class B> void re(pair<A, B> &p) { re(p.f, p.s); }

template <class A> void re(vector<A> &x) { trav(a, x) re(a); }

template <class A, size_t SZ> void re(array<A, SZ> &x) { trav(a, x) re(a); }

template <class T> T gcd(T a, T b) {
  a = a < 0 ? -a : a;
  b = b < 0 ? -b : b;
  if (a * b == 0)
    return max(a, b);
  else
    return gcd(min(a, b), max(a, b) % min(a, b));
}

const int MODE107 = 1000000007;

template <class T> T modop(T a, T mode = MODE107) {
  a = a % mode;
  if (a < 0)
    a += mode;
  return a;
}

const int uplrDX[] = {-1, 1, 0, 0};
const int uplrDY[] = {0, 0, -1, 1};

#define ts to_string

str ts(char c) { return str(1, c); }

str ts(bool b) { return b ? "true" : "false"; }

str ts(const char *s) { return (str)s; }

str ts(str s) { return s; }

template <class A> str ts(complex<A> c) {
  stringstream ss;
  ss << c;
  return ss.str();
}

str ts(vector<bool> v) {
  str res = "{";
  f0r(i, sz(v)) res += char('0' + v[i]);
  res += "}";
  return res;
}

template <size_t SZ> str ts(bitset<SZ> b) {
  str res = "";
  f0r(i, SZ) res += char('0' + b[i]);
  return res;
}

template <class A, class B> str ts(pair<A, B> p);

template <class T> str ts(T v) { // containers with begin(), end()
  bool fst = 1;
  str res = "{";
  for (const auto &x : v) {
    if (!fst)
      res += ", ";
    fst = 0;
    res += ts(x);
  }
  res += "}";
  return res;
}

template <class A, class B> str ts(pair<A, B> p) {
  return "(" + ts(p.f) + ", " + ts(p.s) + ")";
}

// OUTPUT
template <class A> void pr(A x) { cout << ts(x); }

template <class H, class... T> void pr(const H &h, const T &...t) {
  pr(h);
  pr(t...);
}

void ps() { pr("\\n"); } // print w/ spaces
template <class H, class... T> void ps(const H &h, const T &...t) {
  pr(h);
  if (sizeof...(t))
    pr(" ");
  ps(t...);
}

// DEBUG
void DBG() { cerr << "]" << endl; }

template <class H, class... T> void DBG(H h, T... t) {
  cerr << ts(h);
  if (sizeof...(t))
    cerr << ", ";
  DBG(t...);
}

#ifdef LOCAL // compile with -DLOCAL
#define dbg(...)                                                               \\
  cerr << "LINE(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [",           \\
      DBG(__VA_ARGS__)
#else
#define dbg(...) 0
#endif

// REINITIALIZE ARRAYS BETWEEN TCs

/**
 * Description: Use in place of \\texttt{complex<T>}.
 * Source: http://codeforces.com/blog/entry/22175, KACTL
 * Verification: various
 */

typedef int T;

int sgn(T a) { return (a > 0) - (a < 0); }

T sq(T a) { return a * a; }

namespace Point {
typedef pair<T, T> P;
typedef vector<P> vP;

T norm(const P &p) { return sq(p.f) + sq(p.s); }

T abs(const P &p) { return sqrt(norm(p)); }

T arg(const P &p) { return atan2(p.s, p.f); }

P conj(const P &p) { return P(p.f, -p.s); }

P perp(const P &p) { return P(-p.s, p.f); }

P dir(T ang) { return P(cos(ang), sin(ang)); }

P operator-(const P &l) { return P(-l.f, -l.s); }

P operator+(const P &l, const P &r) { return P(l.f + r.f, l.s + r.s); }

P operator-(const P &l, const P &r) { return P(l.f - r.f, l.s - r.s); }

P operator*(const P &l, const T &r) { return P(l.f * r, l.s * r); }

P operator*(const T &l, const P &r) { return r * l; }

P operator/(const P &l, const T &r) { return P(l.f / r, l.s / r); }

P operator*(const P &l, const P &r) {
  return P(l.f * r.f - l.s * r.s, l.s * r.f + l.f * r.s);
}

P operator/(const P &l, const P &r) { return l * conj(r) / norm(r); }

P &operator+=(P &l, const P &r) { return l = l + r; }

P &operator-=(P &l, const P &r) { return l = l - r; }

P &operator*=(P &l, const T &r) { return l = l * r; }

P &operator/=(P &l, const T &r) { return l = l / r; }

P &operator*=(P &l, const P &r) { return l = l * r; }

P &operator/=(P &l, const P &r) { return l = l / r; }

P unit(const P &p) { return p / abs(p); }

T dot(const P &a, const P &b) { return a.f * b.f + a.s * b.s; }

T cross(const P &a, const P &b) { return a.f * b.s - a.s * b.f; }

T cross(const P &p, const P &a, const P &b) { return cross(a - p, b - p); }

P reflect(const P &p, const P &a, const P &b) {
  return a + conj((p - a) / (b - a)) * (b - a);
}

P foot(const P &p, const P &a, const P &b) {
  return (p + reflect(p, a, b)) / (T)2;
}

bool onSeg(const P &p, const P &a, const P &b) {
  return cross(a, b, p) == 0 && dot(p - a, p - b) <= 0;
}

ostream &operator<<(ostream &os, const P &p) {
  return os << "(" << p.f << "," << p.s << ")";
}
}; // namespace Point

// using namespace Point;

typedef unsigned long long ull;

class trie {
public:
  map<char, trie> l;

  void add(string t) {
    if (t.length() > 0) {
      l[t[0]].add(t.substr(1));
    }
  }

  bool contains(string t) {
    if (not l.count(t[0]))
      return false;
    return l[t[0]].contains(t.substr(1));
  }
};

template <class T> class rq {
  /* range query
   */
  vector<vector<T>> content;
  function<T(T, T)> op;

public:
  rq(vector<T> &orig, function<T(T, T)> operation) {
    op = operation;
    int size = 1;
    content.emplace_back(orig);
    while (size < orig.size()) {
      size *= 2;
      content.emplace_back(0);
      auto &todo = content.back(), &from = content[content.size() - 2];
      f0r(i, sz(from) - size / 2) {
        todo.eb(op(from[i],
                   from[i + size / 2])); //[i ~ i+s[ = [i, i+s/2[ + [i+s/2,i+s[
      }
    }
  }

  T query(int i, int j) { //[i,j[
    if (j <= i or j > content[0].size() or i < 0 or i >= content[0].size()) {
      cerr << "i=" << i << endl;
      cerr << "j=" << j << endl;
      throw "bad i j";
    }
    tie(i, j) = mp(min(i, j), max(i, j));
    int size = 1, pow = 0;
    while (size * 2 < j - i) {
      size *= 2, pow++;
    }
    assert(pow < content.size());
    auto &c = content[pow];
    assert(i < c.size() and i >= 0);
    assert(j - size < c.size() and j - size >= 0);
    T dbg = op(content[pow][i], content[pow][j - size]);
    return dbg;
  }
};

template <class T> class maxflow {
public:
  typedef T unit;
  int src, drn; // source and drain node id
  vector<vi> adj, radj;
  map<pi, unit> lims;
  map<pi, unit> rlims; // will contain solution after solve()
  void genradj() {
    radj.resize(sz(adj));
    f0r(from, sz(adj)) {
      trav(to, adj[from]) { radj[to].emplace_back(from); }
    }
  }

  unit solve() {
    while (true) {
      map<int, pair<pi, unit>> backtrack;
      bool found = false;
      set<int> seen; // bfs from src
      queue<pair<int, unit>> todo;
      todo.emplace(src, -1);
      while (not todo.empty()) {
        int from = todo.front().f;
        unit bottleneck = todo.front().s;
        todo.pop();
        if (from == drn) {
          found = true;
          break;
        }
        trav(to, adj[from]) {
          pi edge = mp(from, to);
          unit bn = min(bottleneck, lims[edge]);
          if (bn and not seen.count(to)) {
            seen.emplace(to);
            todo.emplace(to, bn);
            backtrack[to] = mp(edge, bn);
          }
        }

        trav(to, radj[from]) {
          pi edge = mp(to, from);
          unit bn = min(bottleneck, rlims[edge]);
          if (bn and not seen.count(to)) {
            seen.emplace(to);
            todo.emplace(to, bn);
            backtrack[to] = mp(edge, bn);
          }
        }
      }
      if (not found)
        break;
      else {
        list<pi> edges;
        int to = drn;
        unit flow = backtrack[to].second;
        while (to != src) {
          pi edge = backtrack[to].f;
          int from = edge.f + edge.s - to;
          edges.emplace_front(edge);
          to = from;
        }
        int from = src;
        trav(e, edges) {
          if (e.f == from)
            rlims[e] += flow, lims[e] -= flow;
          else
            rlims[e] -= flow, lims[e] += flow;
          from = e.f + e.s - from;
        }
      }
    }
    unit res = 0;
    trav(to, adj[src]) res += rlims[mp(src, to)];
    return res;
  }
};

void precalc() {
  // start here
}

void solve(int ti) {
  // start here
  int n, m, k;
  re(n, m, k);
  vl a(n), b(m);
  re(a, b);
  vl cuma = {0}, cumb = {0};
  trav(aa, a) cuma.emplace_back(cuma.back() + aa);
  trav(bb, b) cumb.emplace_back(cumb.back() + bb);
  int ai = 0, bi = 0, most = 0;
  while (bi < sz(cumb) and cumb[bi] <= k)
    bi++;
  for (ai = 0; cuma[ai] <= k; ai++) {
    ll left = k - cuma[ai];
    while (bi >= 0 and cumb[bi] > left)
      bi--;
    ckmax(most, ai + bi);
  }
  ps(most);
}

int main() {
  precalc();
  bool online = true;
#ifdef OFFLINE
  online = false;
  if (online)
    boost();
  string testinputs[] = {
      R"(
5 4 1
1000000000 1000000000 1000000000 1000000000 1000000000
1000000000 1000000000 1000000000 1000000000

)",
      //            R"(3 2
      // 1 1 0
      // 1 2
      // 1 3
      //
      //)",
  }; // TODO
  trav(testinput, testinputs) {
    istringstream iss(testinput);
    cout << "---local mode---" << endl;
    cin.rdbuf(iss.rdbuf());
#endif
    // setIO("A");
    int T = 1;
    {
      //            re(T);
    }
    vfor(i, 1, T + 1) {
      //        cout << "Case #" << i << ": ";//Google Code jam
      solve(i);
    }

#ifdef OFFLINE
  }
#endif
}