Submission #1005351

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005351		jonathanirvings	Flooding Wall (BOI24_wall)	C++17	70 / 100	5057 ms	66824 KiB

Main

//start of jonathanirvings' template v3.0.3 (BETA)

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

typedef long long LL;
typedef pair<int,int> pii;
typedef pair<LL,LL> pll;
typedef pair<string,string> pss;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<pii> vii;
typedef vector<LL> vl;
typedef vector<vl> vvl;

double EPS = 1e-9;
int INF = 1000000005;
long long INFF = 1000000000000000005LL;
double PI = acos(-1);
int dirx[8] = {-1,0,0,1,-1,-1,1,1};
int diry[8] = {0,1,-1,0,-1,1,-1,1};

#ifdef TESTING
  #define DEBUG fprintf(stderr,"====TESTING====\n")
  #define VALUE(x) cerr << "The value of " << #x << " is " << x << endl
  #define debug(...) fprintf(stderr, __VA_ARGS__)
#else
  #define DEBUG
  #define VALUE(x)
  #define debug(...)
#endif

#define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
#define FORN(a,b,c) for (int (a)=(b);(a)<=(c);++(a))
#define FORD(a,b,c) for (int (a)=(b);(a)>=(c);--(a))
#define FORSQ(a,b,c) for (int (a)=(b);(a)*(a)<=(c);++(a))
#define FORC(a,b,c) for (char (a)=(b);(a)<=(c);++(a))
#define FOREACH(a,b) for (auto &(a) : (b))
#define REP(i,n) FOR(i,0,n)
#define REPN(i,n) FORN(i,1,n)
#define MAX(a,b) a = max(a,b)
#define MIN(a,b) a = min(a,b)
#define SQR(x) ((LL)(x) * (x))
#define RESET(a,b) memset(a,b,sizeof(a))
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define ALL(v) v.begin(),v.end()
#define ALLA(arr,sz) arr,arr+sz
#define SIZE(v) (int)v.size()
#define SORT(v) sort(ALL(v))
#define REVERSE(v) reverse(ALL(v))
#define SORTA(arr,sz) sort(ALLA(arr,sz))
#define REVERSEA(arr,sz) reverse(ALLA(arr,sz))
#define PERMUTE next_permutation
#define TC(t) while(t--)

inline string IntToString(LL a){
  char x[100];
  sprintf(x,"%lld",a); string s = x;
  return s;
}

inline LL StringToInt(string a){
  char x[100]; LL res;
  strcpy(x,a.c_str()); sscanf(x,"%lld",&res);
  return res;
}

inline string GetString(void){
  char x[1000005];
  scanf("%s",x); string s = x;
  return s;
}

inline string uppercase(string s){
  int n = SIZE(s);
  REP(i,n) if (s[i] >= 'a' && s[i] <= 'z') s[i] = s[i] - 'a' + 'A';
  return s;
}

inline string lowercase(string s){
  int n = SIZE(s);
  REP(i,n) if (s[i] >= 'A' && s[i] <= 'Z') s[i] = s[i] - 'A' + 'a';
  return s;
}

inline void OPEN (string s) {
  #ifndef TESTING
  freopen ((s + ".in").c_str (), "r", stdin);
  freopen ((s + ".out").c_str (), "w", stdout);
  #endif
}

//end of jonathanirvings' template v3.0.3 (BETA)

template <int Mod>
struct ModInt {
  
  ModInt() : num_(0) {}
 
  template <class T>
  ModInt(T num) {
    long long x = (long long)(num % (long long)(Mod));
    if (x < 0) x += Mod;
    num_ = (int)(x);
  }
 
  ModInt& operator++() {
    num_++;
    if (num_ == Mod) num_ = 0;
    return *this;
  }
  ModInt& operator--() {
    if (num_ == 0) num_ = Mod;
    num_--;
    return *this;
  }
  ModInt operator++(int) {
    ModInt result = *this;
    ++*this;
    return result;
  }
  ModInt operator--(int) {
    ModInt result = *this;
    --*this;
    return result;
  }
 
  ModInt& operator+=(const ModInt& rhs) {
    num_ += rhs.num_;
    if (num_ >= Mod) num_ -= Mod;
    return *this;
  }
  ModInt& operator-=(const ModInt& rhs) {
    num_ -= rhs.num_;
    if (num_ < 0) num_ += Mod;
    return *this;
  }
  ModInt& operator*=(const ModInt& rhs) {
    long long z = num_;
    z *= rhs.num_;
    num_ = (int)(z % Mod);
    return *this;
  }
  ModInt& operator/=(const ModInt& rhs) { return *this = *this * rhs.inv(); }
 
  ModInt operator+() const { return *this; }
  ModInt operator-() const { return ModInt() - *this; }
 
  ModInt pow(long long n) const {
    assert(0 <= n);
    ModInt x = *this, r = 1;
    while (n) {
      if (n & 1) r *= x;
      x *= x;
      n >>= 1;
    }
    return r;
  }
  ModInt inv() const {
    return pow(Mod - 2);
  }
 
  friend ModInt operator+(const ModInt& lhs, const ModInt& rhs) {
    return ModInt(lhs) += rhs;
  }
  friend ModInt operator-(const ModInt& lhs, const ModInt& rhs) {
    return ModInt(lhs) -= rhs;
  }
  friend ModInt operator*(const ModInt& lhs, const ModInt& rhs) {
    return ModInt(lhs) *= rhs;
  }
  friend ModInt operator/(const ModInt& lhs, const ModInt& rhs) {
    return ModInt(lhs) /= rhs;
  }
  friend bool operator==(const ModInt& lhs, const ModInt& rhs) {
    return lhs.num_ == rhs.num_;
  }
  friend bool operator!=(const ModInt& lhs, const ModInt& rhs) {
    return lhs.num_ != rhs.num_;
  }
 
  int get() const { return num_; }
 
  int num_;
};

template <int Mod>
struct ModBinomCoeff {
 
  ModBinomCoeff() {}
  ModBinomCoeff(int N) : fact_(N + 1), inv_fact_(N + 1) {
    fact_[0] = 1;
    for (int i = 1; i <= N; ++i) {
      fact_[i] = fact_[i - 1] * (i);
    }
    inv_fact_[N] = fact_[N].inv();
    for (int i = N - 1; i >= 0; --i) {
      inv_fact_[i] = inv_fact_[i + 1] * (i + 1);
    }
  }
 
  ModInt<Mod> fact(int N) {
    assert(N < fact_.size());
    return fact_[N];
  }
  ModInt<Mod> choose(int N, int K) {
    assert(N < fact_.size());
    return fact_[N] * inv_fact_[K] * inv_fact_[N - K];
  }
 
  vector<ModInt<Mod>> fact_;
  vector<ModInt<Mod>> inv_fact_;
};
 
constexpr int Mod998244353 = 998244353;
constexpr int Mod1000000007 = 1000000007;
constexpr int Mod = Mod1000000007;

using Int = ModInt<Mod>;

#ifndef ATCODER_LAZYSEGTREE_HPP
#define ATCODER_LAZYSEGTREE_HPP 1

#include <algorithm>
#include <cassert>
#include <functional>
#include <vector>

#ifndef ATCODER_INTERNAL_BITOP_HPP
#define ATCODER_INTERNAL_BITOP_HPP 1

#ifdef _MSC_VER
#include <intrin.h>
#endif

#if __cplusplus >= 202002L
#include <bit>
#endif

namespace atcoder {

namespace internal {

#if __cplusplus >= 202002L

using std::bit_ceil;

#else

// @return same with std::bit::bit_ceil
unsigned int bit_ceil(unsigned int n) {
    unsigned int x = 1;
    while (x < (unsigned int)(n)) x *= 2;
    return x;
}

#endif

// @param n `1 <= n`
// @return same with std::bit::countr_zero
int countr_zero(unsigned int n) {
#ifdef _MSC_VER
    unsigned long index;
    _BitScanForward(&index, n);
    return index;
#else
    return __builtin_ctz(n);
#endif
}

// @param n `1 <= n`
// @return same with std::bit::countr_zero
constexpr int countr_zero_constexpr(unsigned int n) {
    int x = 0;
    while (!(n & (1 << x))) x++;
    return x;
}

}  // namespace internal

}  // namespace atcoder

#endif  // ATCODER_INTERNAL_BITOP_HPP

namespace atcoder {

#if __cplusplus >= 201703L

template <class S,
          auto op,
          auto e,
          class F,
          auto mapping,
          auto composition,
          auto id>
struct lazy_segtree {
    static_assert(std::is_convertible_v<decltype(op), std::function<S(S, S)>>,
                  "op must work as S(S, S)");
    static_assert(std::is_convertible_v<decltype(e), std::function<S()>>,
                  "e must work as S()");
    static_assert(
        std::is_convertible_v<decltype(mapping), std::function<S(F, S)>>,
        "mapping must work as S(F, S)");
    static_assert(
        std::is_convertible_v<decltype(composition), std::function<F(F, F)>>,
        "composition must work as F(F, F)");
    static_assert(std::is_convertible_v<decltype(id), std::function<F()>>,
                  "id must work as F()");

#else

template <class S,
          S (*op)(S, S),
          S (*e)(),
          class F,
          S (*mapping)(F, S),
          F (*composition)(F, F),
          F (*id)()>
struct lazy_segtree {

#endif

  public:
    lazy_segtree() : lazy_segtree(0) {}
    explicit lazy_segtree(int n) : lazy_segtree(std::vector<S>(n, e())) {}
    explicit lazy_segtree(const std::vector<S>& v) : _n(int(v.size())) {
        size = (int)internal::bit_ceil((unsigned int)(_n));
        log = internal::countr_zero((unsigned int)size);
        d = std::vector<S>(2 * size, e());
        lz = std::vector<F>(size, id());
        for (int i = 0; i < _n; i++) d[size + i] = v[i];
        for (int i = size - 1; i >= 1; i--) {
            update(i);
        }
    }

    void set(int p, S x) {
        assert(0 <= p && p < _n);
        p += size;
        for (int i = log; i >= 1; i--) push(p >> i);
        d[p] = x;
        for (int i = 1; i <= log; i++) update(p >> i);
    }

    S get(int p) {
        assert(0 <= p && p < _n);
        p += size;
        for (int i = log; i >= 1; i--) push(p >> i);
        return d[p];
    }

    S prod(int l, int r) {
        assert(0 <= l && l <= r && r <= _n);
        if (l == r) return e();

        l += size;
        r += size;

        for (int i = log; i >= 1; i--) {
            if (((l >> i) << i) != l) push(l >> i);
            if (((r >> i) << i) != r) push((r - 1) >> i);
        }

        S sml = e(), smr = e();
        while (l < r) {
            if (l & 1) sml = op(sml, d[l++]);
            if (r & 1) smr = op(d[--r], smr);
            l >>= 1;
            r >>= 1;
        }

        return op(sml, smr);
    }

    S all_prod() { return d[1]; }

    void apply(int p, F f) {
        assert(0 <= p && p < _n);
        p += size;
        for (int i = log; i >= 1; i--) push(p >> i);
        d[p] = mapping(f, d[p]);
        for (int i = 1; i <= log; i++) update(p >> i);
    }
    void apply(int l, int r, F f) {
        assert(0 <= l && l <= r && r <= _n);
        if (l == r) return;

        l += size;
        r += size;

        for (int i = log; i >= 1; i--) {
            if (((l >> i) << i) != l) push(l >> i);
            if (((r >> i) << i) != r) push((r - 1) >> i);
        }

        {
            int l2 = l, r2 = r;
            while (l < r) {
                if (l & 1) all_apply(l++, f);
                if (r & 1) all_apply(--r, f);
                l >>= 1;
                r >>= 1;
            }
            l = l2;
            r = r2;
        }

        for (int i = 1; i <= log; i++) {
            if (((l >> i) << i) != l) update(l >> i);
            if (((r >> i) << i) != r) update((r - 1) >> i);
        }
    }

    template <bool (*g)(S)> int max_right(int l) {
        return max_right(l, [](S x) { return g(x); });
    }
    template <class G> int max_right(int l, G g) {
        assert(0 <= l && l <= _n);
        assert(g(e()));
        if (l == _n) return _n;
        l += size;
        for (int i = log; i >= 1; i--) push(l >> i);
        S sm = e();
        do {
            while (l % 2 == 0) l >>= 1;
            if (!g(op(sm, d[l]))) {
                while (l < size) {
                    push(l);
                    l = (2 * l);
                    if (g(op(sm, d[l]))) {
                        sm = op(sm, d[l]);
                        l++;
                    }
                }
                return l - size;
            }
            sm = op(sm, d[l]);
            l++;
        } while ((l & -l) != l);
        return _n;
    }

    template <bool (*g)(S)> int min_left(int r) {
        return min_left(r, [](S x) { return g(x); });
    }
    template <class G> int min_left(int r, G g) {
        assert(0 <= r && r <= _n);
        assert(g(e()));
        if (r == 0) return 0;
        r += size;
        for (int i = log; i >= 1; i--) push((r - 1) >> i);
        S sm = e();
        do {
            r--;
            while (r > 1 && (r % 2)) r >>= 1;
            if (!g(op(d[r], sm))) {
                while (r < size) {
                    push(r);
                    r = (2 * r + 1);
                    if (g(op(d[r], sm))) {
                        sm = op(d[r], sm);
                        r--;
                    }
                }
                return r + 1 - size;
            }
            sm = op(d[r], sm);
        } while ((r & -r) != r);
        return 0;
    }

  private:
    int _n, size, log;
    std::vector<S> d;
    std::vector<F> lz;

    void update(int k) { d[k] = op(d[2 * k], d[2 * k + 1]); }
    void all_apply(int k, F f) {
        d[k] = mapping(f, d[k]);
        if (k < size) lz[k] = composition(f, lz[k]);
    }
    void push(int k) {
        all_apply(2 * k, lz[k]);
        all_apply(2 * k + 1, lz[k]);
        lz[k] = id();
    }
};

}  // namespace atcoder

#endif  // ATCODER_LAZYSEGTREE_HPP

struct MultiplicationNode {
  Int val;
  int count;

  static MultiplicationNode e() {
    return (MultiplicationNode){1, 0};
  }
  static MultiplicationNode op(MultiplicationNode a, MultiplicationNode b) {
    return (MultiplicationNode){a.val * b.val, a.count + b.count};  
  }
  static MultiplicationNode mapping(Int f, MultiplicationNode x) {
    return (MultiplicationNode){x.val * f.pow(x.count), x.count};
  }
};

Int multiply(Int f, Int g) {
  return f * g;
}
Int add(Int f, Int g) {
  return f + g;
}
Int one() {
  return Int(1);
}
Int zero() {
  return Int(0);
}

using MultiplicationSegtree = atcoder::lazy_segtree<
    MultiplicationNode, MultiplicationNode::op, MultiplicationNode::e,
    Int, MultiplicationNode::mapping, multiply, one>;
using AdditionSegtree = atcoder::lazy_segtree<
    Int, add, zero,
    Int, multiply, multiply, one>;

int n;
int a[500005];
int b[500005];
int rem[500005];
Int totkiri[500005],totkanan[500005];
Int two[50005];

MultiplicationSegtree segrem;
AdditionSegtree segkanantambah;
AdditionSegtree segkanankurang;
AdditionSegtree segkiritambah;
AdditionSegtree segkirikurang;

int main()
{
  scanf("%d",&n);

  two[0] = 1;
  FORN(i,1,n+2) two[i] = two[i - 1] * 2;
  segrem = MultiplicationSegtree(
      vector<MultiplicationNode>(n, (MultiplicationNode){2, 1}));
  // segkanantambah = segkanankurang = segkiritambah = segkirikurang =
  //     AdditionSegtree(vector<Int>(n));
  segkanantambah = segkanankurang = segkiritambah = segkirikurang =
      AdditionSegtree(vector<Int>(n, two[n]));
  REP(i,n)
  {
    // segkanantambah.set(i, two[n]);
    // segkanankurang.set(i, two[n - i - 1]);
    // segkiritambah.set(i, two[n]);
    // segkirikurang.set(i, two[i]);
  }

  REP(i,n) scanf("%d",&a[i]);
  REP(i,n) scanf("%d",&b[i]);
  vii angka;
  REP(i,n)
  {
    angka.pb(mp(a[i],i));
    angka.pb(mp(b[i],i));
  }
  SORT(angka);
  Int risan = 0;
  if (angka.back().fi == 2)
  {
    Int kiri = 1;
    Int kanan = two[n - 1];
    REP(i,n)
    {
      risan += (kiri - 1) * (kanan - 1);
      kiri *= 2;
      kanan /= 2;
    }
    printf("%d\n",risan.get());
    return 0;
  }
  REP(i,n) rem[i] = 2;
  FORD(i,SIZE(angka)-1,0)
  {
    int pos = angka[i].se;
    int h = angka[i].fi;
    // totkiri[0] = 1;
    // FOR(j,1,n) totkiri[j] = totkiri[j - 1] * rem[j - 1];
    // totkanan[n - 1] = 1;
    // FORD(j,n-2,0) totkanan[j] = totkanan[j + 1] * rem[j + 1];
    
    {
      risan += Int(h) / rem[pos] * segkanantambah.prod(pos + 1, n);
      risan -= Int(h) / rem[pos] * segkanankurang.prod(pos + 1, n);
      // FOR(j,pos+1,n)
      {
        // risan += totkiri[j] / rem[pos] * h * rem[j] * (two[n - j - 1] - totkanan[j]);
        // risan += Int(h) / rem[pos] * totkiri[j] * rem[j] * two[n - j - 1];
        // risan -= Int(h) / rem[pos] * totkiri[j] * rem[j] * totkanan[j];
      }
    }
    {
      risan += Int(h) / rem[pos] * segkiritambah.prod(0, pos);
      risan -= Int(h) / rem[pos] * segkirikurang.prod(0, pos);
      // FORD(j,pos-1,0)
      {
        // risan += totkanan[j] / rem[pos] * h * rem[j] * (two[j] - totkiri[j]);
        // risan += Int(h) / rem[pos] * totkanan[j] * rem[j] * two[j];
        // risan -= Int(h) / rem[pos] * totkanan[j] * rem[j] * totkiri[j];
      }
    }
    {
      // Int cur = 1;
      // REP(j,n) if (j != pos) cur *= rem[j];
      // risan += h * cur;
      // cur = 1;
      // REP(j,pos) cur *= rem[j];
      // risan += h * cur * totkanan[pos];
      // cur = 1;
      // FORD(j,n-1,pos+1) cur *= rem[j];
      // risan += h * cur * totkiri[pos];
      
      // risan += h * totkiri[pos] * two[n - pos - 1];
      // risan += h * two[pos] * totkanan[pos];
      // risan -= h * totkiri[pos] * totkanan[pos];

      risan += h * segrem.prod(0,pos).val * two[n - pos - 1];
      risan += h * two[pos] * segrem.prod(pos+1,n).val;
      risan -= h * segrem.prod(0,pos).val * segrem.prod(pos+1,n).val;
    }
    if (rem[pos] == 2)
    {
      segrem.apply(pos,Int(1) / 2);
      segkanantambah.apply(pos, n, Int(1) / 2);
      // segkanankurang.apply(0, pos + 1, Int(1) / 2);
      segkanankurang.apply(0, n, Int(1) / 2);
      segkiritambah.apply(0, pos + 1, Int(1) / 2);
      segkirikurang.apply(0, n, Int(1) / 2);
      // segkirikurang.apply(pos, n, Int(1) / 2);
    } else if (rem[pos] == 1)
    {
      segrem.apply(pos,0);
      segkanantambah.apply(pos, n, 0);
      // segkanankurang.apply(0, pos + 1, 0);
      segkanankurang.apply(0, n, 0);
      segkiritambah.apply(0, pos + 1, 0);
      segkirikurang.apply(0, n, 0);
      // segkirikurang.apply(pos, n, 0);
    }
    --rem[pos];
  }
  REP(i,n) risan -= (a[i] + b[i]) * two[n - 1];
  printf("%d\n",risan.get());
}

Compilation message (stderr)

Main.cpp: In function 'std::string uppercase(std::string)':
Main.cpp:33:29: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   33 | #define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
      |                             ^
Main.cpp:39:18: note: in expansion of macro 'FOR'
   39 | #define REP(i,n) FOR(i,0,n)
      |                  ^~~
Main.cpp:79:3: note: in expansion of macro 'REP'
   79 |   REP(i,n) if (s[i] >= 'a' && s[i] <= 'z') s[i] = s[i] - 'a' + 'A';
      |   ^~~
Main.cpp: In function 'std::string lowercase(std::string)':
Main.cpp:33:29: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   33 | #define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
      |                             ^
Main.cpp:39:18: note: in expansion of macro 'FOR'
   39 | #define REP(i,n) FOR(i,0,n)
      |                  ^~~
Main.cpp:85:3: note: in expansion of macro 'REP'
   85 |   REP(i,n) if (s[i] >= 'A' && s[i] <= 'Z') s[i] = s[i] - 'A' + 'a';
      |   ^~~
Main.cpp: In function 'int main()':
Main.cpp:34:30: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   34 | #define FORN(a,b,c) for (int (a)=(b);(a)<=(c);++(a))
      |                              ^
Main.cpp:549:3: note: in expansion of macro 'FORN'
  549 |   FORN(i,1,n+2) two[i] = two[i - 1] * 2;
      |   ^~~~
Main.cpp:33:29: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   33 | #define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
      |                             ^
Main.cpp:39:18: note: in expansion of macro 'FOR'
   39 | #define REP(i,n) FOR(i,0,n)
      |                  ^~~
Main.cpp:556:3: note: in expansion of macro 'REP'
  556 |   REP(i,n)
      |   ^~~
Main.cpp:33:29: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   33 | #define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
      |                             ^
Main.cpp:39:18: note: in expansion of macro 'FOR'
   39 | #define REP(i,n) FOR(i,0,n)
      |                  ^~~
Main.cpp:564:3: note: in expansion of macro 'REP'
  564 |   REP(i,n) scanf("%d",&a[i]);
      |   ^~~
Main.cpp:33:29: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   33 | #define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
      |                             ^
Main.cpp:39:18: note: in expansion of macro 'FOR'
   39 | #define REP(i,n) FOR(i,0,n)
      |                  ^~~
Main.cpp:565:3: note: in expansion of macro 'REP'
  565 |   REP(i,n) scanf("%d",&b[i]);
      |   ^~~
Main.cpp:33:29: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   33 | #define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
      |                             ^
Main.cpp:39:18: note: in expansion of macro 'FOR'
   39 | #define REP(i,n) FOR(i,0,n)
      |                  ^~~
Main.cpp:567:3: note: in expansion of macro 'REP'
  567 |   REP(i,n)
      |   ^~~
Main.cpp:33:29: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   33 | #define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
      |                             ^
Main.cpp:39:18: note: in expansion of macro 'FOR'
   39 | #define REP(i,n) FOR(i,0,n)
      |                  ^~~
Main.cpp:578:5: note: in expansion of macro 'REP'
  578 |     REP(i,n)
      |     ^~~
Main.cpp:33:29: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   33 | #define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
      |                             ^
Main.cpp:39:18: note: in expansion of macro 'FOR'
   39 | #define REP(i,n) FOR(i,0,n)
      |                  ^~~
Main.cpp:587:3: note: in expansion of macro 'REP'
  587 |   REP(i,n) rem[i] = 2;
      |   ^~~
Main.cpp:35:30: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   35 | #define FORD(a,b,c) for (int (a)=(b);(a)>=(c);--(a))
      |                              ^
Main.cpp:588:3: note: in expansion of macro 'FORD'
  588 |   FORD(i,SIZE(angka)-1,0)
      |   ^~~~
Main.cpp:33:29: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   33 | #define FOR(a,b,c) for (int (a)=(b);(a)<(c);++(a))
      |                             ^
Main.cpp:39:18: note: in expansion of macro 'FOR'
   39 | #define REP(i,n) FOR(i,0,n)
      |                  ^~~
Main.cpp:657:3: note: in expansion of macro 'REP'
  657 |   REP(i,n) risan -= (a[i] + b[i]) * two[n - 1];
      |   ^~~
Main.cpp:546:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  546 |   scanf("%d",&n);
      |   ~~~~~^~~~~~~~~
Main.cpp:564:17: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  564 |   REP(i,n) scanf("%d",&a[i]);
      |            ~~~~~^~~~~~~~~~~~
Main.cpp:565:17: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  565 |   REP(i,n) scanf("%d",&b[i]);
      |            ~~~~~^~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 17 / 17
• Subtask 3: 19 / 19
• Subtask 4: 14 / 14
• Subtask 5: 12 / 12
• Subtask 6: 0 / 30