Problem p02686 (C++) — buggy submission, verdict: Runtime Error

#include <bits/stdc++.h>
using namespace std;

int main() {
  int N;
  cin >> N;

  vector<pair<int, int>> left, right;
  for (int i = 0; i < N; i++) {
    string s;
    cin >> s;
    int d = 0, mi_d = 0;
    for (auto c : s) {
      if (c == '(')
        d++;
      else
        d--;
      mi_d = min(mi_d, d);
    }
    if (d > 0)
      left.emplace_back(mi_d, d);
    else
      right.emplace_back(mi_d - d, -d);
  }
  sort(rbegin(left), rend(left));
  sort(rbegin(right), rend(right));
  int D = 0, sum = 0;
  bool ok = true;
  for (auto p : left) {
    int mi = p.first, d = p.second;
    if (D + mi < 0)
      ok = false;
    D += d;
    sum += d;
  }
  D = 0;
  for (auto p : right) {
    int mi = p.first, d = p.second;
    if (D + mi < 0)
      ok = false;
    D += d;
    sum -= d;
  }
  if (ok && sum == 0)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
}


Error: 0

Fixed submission:

/**
 * code generated by JHelper
 * More info: https://github.com/AlexeyDmitriev/JHelper
 * @author Gosu_Hiroo
 */

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")

#define VI vector<int>
#define G(size_1) vector<vector<int>>(size_1, vector<int>())
#define SZ(x) ((int)(x).size())
#define READ                                                                   \\
  ({                                                                           \\
    int t;                                                                     \\
    cin >> t;                                                                  \\
    t;                                                                         \\
  })
#define PII pair<int, int>

#define FOR(i, _begin, _end)                                                   \\
  for (__typeof(_end) end = _end, begin = _begin,                              \\
                      i = (begin) - ((begin) > (end));                         \\
       i != (end) - ((begin) > (end)); i += 1 - 2 * ((begin) > (end)))
#define REP(i, end) for (__typeof(end) i = 0, _len = (end); i < (_len); i += 1)
#define ALL(x) (x).begin(), (x).end()
#define F first
#define S second
#define y0 y3487465
#define y1 y8687969
#define j0 j1347829
#define j1 j234892
#define MOD(x, m) ((((x) % (m)) + (m)) % (m))
#define BIT(n) (1LL << (n))
#define UNIQUE(v) v.erase(unique(v.begin(), v.end()), v.end());
#define EB emplace_back
#define PB push_back
#define fcout cout << fixed << setprecision(12)
#define fcerr cerr << fixed << setprecision(12)
#define print(x) cout << (x) << endl
#define fprint(x) cout << fixed << setprecision(12) << (x) << endl
#define BYE(a)                                                                 \\
  do {                                                                         \\
    cout << (a) << endl;                                                       \\
    return;                                                                    \\
  } while (false)

#ifdef DEBUG
#define ERR(args...)                                                           \\
  {                                                                            \\
    string _s = #args;                                                         \\
    replace(_s.begin(), _s.end(), ',', ' ');                                   \\
    stringstream _ss(_s);                                                      \\
    istream_iterator<string> _it(_ss);                                         \\
    _err(cerr, _it, args);                                                     \\
  }
#define DBG(x) cerr << #x << " is " << x << endl;
#else
#define DBG(x) {};
#define ERR(args...) {};
#endif
void _err(std::ostream &cerr, istream_iterator<string> it) { cerr << endl; }
template <typename T, typename... Args>
void _err(std::ostream &cerr, istream_iterator<string> it, T a, Args... args) {
  cerr << *it << " = " << a << "  ";
  _err(cerr, ++it, args...);
}

const double pi = 2 * acos(.0);
const int inf = 0x3f3f3f3f;
const ll mod = (ll)(1e9) + 7;

template <class T> bool Chmax(T &a, const T &b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T> bool Chmin(T &a, const T &b) {
  if (b < a) {
    a = b;
    return 1;
  }
  return 0;
}

template <typename T> istream &operator>>(istream &is, vector<T> &V) {
  for (auto &&ele : V)
    is >> ele;
  return is;
}

template <typename T> ostream &operator<<(ostream &os, const vector<T> V) {
  os << "[";
  int cnt = 0;
  T curr;
  if (!V.empty()) {
    for (int i = 0; i < V.size() - 1; ++i) {
      if (V[i] == curr)
        cnt++;
      else
        cnt = 0;
      if (cnt == 4)
        os << "... ";
      if (cnt < 4)
        os << i << ":" << V[i] << " ";
      curr = V[i];
    }
    os << V.size() - 1 << ":" << V.back();
  }
  os << "]\\n";
  return os;
}

template <typename T, typename U>
ostream &operator<<(ostream &os, const pair<T, U> P) {
  os << "(";
  os << P.first << "," << P.second;
  os << ")";
  return os;
}

template <typename T, typename U>
ostream &operator<<(ostream &os, const set<T, U> V) {
  os << "{";
  if (!V.empty()) {
    auto it = V.begin();
    for (int i = 0; i < V.size() - 1; ++i) {
      os << *it << " ";
      it++;
    }
    os << *it;
  }
  os << "}\\n";
  return os;
}

template <typename K, typename H, typename P>
ostream &operator<<(ostream &os, const unordered_set<K, H, P> V) {
  os << "{";
  if (!V.empty()) {
    auto it = V.begin();
    for (int i = 0; i < V.size() - 1; ++i) {
      os << *it << " ";
      it++;
    }
    os << *it;
  }
  os << "}\\n";
  return os;
}

template <typename K, typename C>
ostream &operator<<(ostream &os, const multiset<K, C> V) {
  os << "{";
  if (!V.empty()) {
    auto it = V.begin();
    for (int i = 0; i < V.size() - 1; ++i) {
      os << *it << " ";
      it++;
    }
    os << *it;
  }
  os << "}";
  return os;
}

template <typename K, typename T, typename C>
ostream &operator<<(ostream &os, const map<K, T, C> V) {
  os << "{";
  if (!V.empty()) {
    auto it = V.begin();
    for (int i = 0; i < V.size() - 1; ++i) {
      os << "(";
      os << it->first << "," << it->second;
      os << ") ";
      it++;
    }
    os << "(";
    os << it->first << "," << it->second;
    os << ")";
  }
  os << "}\\n";
  return os;
}

template <typename K, typename T, typename C>
ostream &operator<<(ostream &os, const unordered_map<K, T, C> V) {
  os << "{";
  if (!V.empty()) {
    auto it = V.begin();
    for (int i = 0; i < V.size() - 1; ++i) {
      os << "(";
      os << it->first << "," << it->second;
      os << ") ";
      it++;
    }
    os << "(";
    os << it->first << "," << it->second;
    os << ")";
  }
  os << "}\\n";
  return os;
}

template <typename T> ostream &operator<<(ostream &os, const deque<T> V) {
  os << "[";
  if (!V.empty()) {
    for (int i = 0; i < V.size() - 1; ++i) {
      os << V[i] << "->";
    }
    if (!V.empty())
      os << V.back();
  }
  os << "]\\n";
  return os;
};

template <typename T, typename Cont, typename Comp>
ostream &operator<<(ostream &os, const priority_queue<T, Cont, Comp> V) {
  priority_queue<T, Cont, Comp> _V = V;
  os << "[";
  if (!_V.empty()) {
    while (_V.size() > 1) {
      os << _V.top() << "->";
      _V.pop();
    }
    os << _V.top();
  }
  os << "]\\n";
  return os;
};

template <class F> struct y_combinator {
  F f; // the lambda will be stored here

  // a forwarding operator():
  template <class... Args> decltype(auto) operator()(Args &&...args) const {
    // we pass ourselves to f, then the arguments.
    // the lambda should take the first argument as `auto&& recurse` or similar.
    return f(*this, std::forward<Args>(args)...);
  }
};
// helper function that deduces the type of the lambda:
template <class F> y_combinator<std::decay_t<F>> recursive(F &&f) {
  return {std::forward<F>(f)};
}

struct hash_pair {
  template <class T1, class T2> size_t operator()(const pair<T1, T2> &p) const {
    auto hash1 = hash<T1>{}(p.first);
    auto hash2 = hash<T2>{}(p.second);
    return hash1 ^ hash2;
  }
};

template <typename T, typename U> std::vector<T> multi_vector(int n, U v) {
  return std::vector<T>(n, v);
}

template <typename U, typename... Args> auto multi_vector(int n, Args... args) {
  auto val = multi_vector<U>(std::forward<Args>(args)...);
  return std::vector<decltype(val)>(n, std::move(val));
}
class FBracketSequencing {
public:
  void solve(std::istream &cin, std::ostream &cout, std::ostream &cerr) {
    int N;
    cin >> N;
    vector<PII> p(N);
    REP(i, N) {
      string s;
      cin >> s;
      int n1 = 0, n2 = 0;
      int mi = inf;
      for (auto c : s) {
        if (c == '(')
          n1++;
        else
          n2++;
        Chmin(mi, n1 - n2);
      }
      p[i] = {mi, n1 - n2};
    }
    sort(ALL(p), [](PII a, PII b) {
      return min(a.F, a.S + b.F) >= min(b.F, b.S + a.F);
    });
    ERR(p)
    int s = 0;
    int ok = 1;
    REP(i, N) {
      if (s + p[i].F < 0)
        ok = 0;
      s += p[i].S;
    }
    if (s == 0 && ok)
      print("Yes");
    else
      print("No");
  }
};

#undef int
int main() {

  FBracketSequencing solver;
  std::istream &in(std::cin);
  std::ostream &out(std::cout);
  std::ostringstream err;
  in.tie(0);
  ios::sync_with_stdio(0);
  solver.solve(in, out, err);
  return 0;
}