QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#361855#8509. Expanding STACKS!ucup-team087#WA 0ms4004kbC++2013.3kb2024-03-23 13:25:172024-03-23 13:25:17

Judging History

你现在查看的是最新测评结果

  • [2024-03-23 13:25:17]
  • 评测
  • 测评结果:WA
  • 用时:0ms
  • 内存:4004kb
  • [2024-03-23 13:25:17]
  • 提交

answer

#line 1 "library/my_template.hpp"
#if defined(LOCAL)
#include <my_template_compiled.hpp>
#else

// https://codeforces.com/blog/entry/96344
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,popcnt")

#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using u32 = unsigned int;
using u64 = unsigned long long;
using i128 = __int128;
using u128 = unsigned __int128;
using f128 = __float128;

template <class T>
constexpr T infty = 0;
template <>
constexpr int infty<int> = 1'000'000'000;
template <>
constexpr ll infty<ll> = ll(infty<int>) * infty<int> * 2;
template <>
constexpr u32 infty<u32> = infty<int>;
template <>
constexpr u64 infty<u64> = infty<ll>;
template <>
constexpr i128 infty<i128> = i128(infty<ll>) * infty<ll>;
template <>
constexpr double infty<double> = infty<ll>;
template <>
constexpr long double infty<long double> = infty<ll>;

using pi = pair<ll, ll>;
using vi = vector<ll>;
template <class T>
using vc = vector<T>;
template <class T>
using vvc = vector<vc<T>>;
template <class T>
using vvvc = vector<vvc<T>>;
template <class T>
using vvvvc = vector<vvvc<T>>;
template <class T>
using vvvvvc = vector<vvvvc<T>>;
template <class T>
using pq = priority_queue<T>;
template <class T>
using pqg = priority_queue<T, vector<T>, greater<T>>;

#define vv(type, name, h, ...) \
  vector<vector<type>> name(h, vector<type>(__VA_ARGS__))
#define vvv(type, name, h, w, ...)   \
  vector<vector<vector<type>>> name( \
      h, vector<vector<type>>(w, vector<type>(__VA_ARGS__)))
#define vvvv(type, name, a, b, c, ...)       \
  vector<vector<vector<vector<type>>>> name( \
      a, vector<vector<vector<type>>>(       \
             b, vector<vector<type>>(c, vector<type>(__VA_ARGS__))))

// https://trap.jp/post/1224/
#define FOR1(a) for (ll _ = 0; _ < ll(a); ++_)
#define FOR2(i, a) for (ll i = 0; i < ll(a); ++i)
#define FOR3(i, a, b) for (ll i = a; i < ll(b); ++i)
#define FOR4(i, a, b, c) for (ll i = a; i < ll(b); i += (c))
#define FOR1_R(a) for (ll i = (a)-1; i >= ll(0); --i)
#define FOR2_R(i, a) for (ll i = (a)-1; i >= ll(0); --i)
#define FOR3_R(i, a, b) for (ll i = (b)-1; i >= ll(a); --i)
#define overload4(a, b, c, d, e, ...) e
#define overload3(a, b, c, d, ...) d
#define FOR(...) overload4(__VA_ARGS__, FOR4, FOR3, FOR2, FOR1)(__VA_ARGS__)
#define FOR_R(...) overload3(__VA_ARGS__, FOR3_R, FOR2_R, FOR1_R)(__VA_ARGS__)

#define FOR_subset(t, s) \
  for (ll t = (s); t >= 0; t = (t == 0 ? -1 : (t - 1) & (s)))
#define all(x) x.begin(), x.end()
#define len(x) ll(x.size())
#define elif else if

#define eb emplace_back
#define mp make_pair
#define mt make_tuple
#define fi first
#define se second

#define stoi stoll

int popcnt(int x) { return __builtin_popcount(x); }
int popcnt(u32 x) { return __builtin_popcount(x); }
int popcnt(ll x) { return __builtin_popcountll(x); }
int popcnt(u64 x) { return __builtin_popcountll(x); }
int popcnt_mod_2(int x) { return __builtin_parity(x); }
int popcnt_mod_2(u32 x) { return __builtin_parity(x); }
int popcnt_mod_2(ll x) { return __builtin_parityll(x); }
int popcnt_mod_2(u64 x) { return __builtin_parityll(x); }
// (0, 1, 2, 3, 4) -> (-1, 0, 1, 1, 2)
int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }
int topbit(u32 x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }
int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }
int topbit(u64 x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }
// (0, 1, 2, 3, 4) -> (-1, 0, 1, 0, 2)
int lowbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); }
int lowbit(u32 x) { return (x == 0 ? -1 : __builtin_ctz(x)); }
int lowbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }
int lowbit(u64 x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }

template <typename T>
T floor(T a, T b) {
  return a / b - (a % b && (a ^ b) < 0);
}
template <typename T>
T ceil(T x, T y) {
  return floor(x + y - 1, y);
}
template <typename T>
T bmod(T x, T y) {
  return x - y * floor(x, y);
}
template <typename T>
pair<T, T> divmod(T x, T y) {
  T q = floor(x, y);
  return {q, x - q * y};
}

template <typename T, typename U>
T SUM(const vector<U> &A) {
  T sm = 0;
  for (auto &&a: A) sm += a;
  return sm;
}

#define MIN(v) *min_element(all(v))
#define MAX(v) *max_element(all(v))
#define LB(c, x) distance((c).begin(), lower_bound(all(c), (x)))
#define UB(c, x) distance((c).begin(), upper_bound(all(c), (x)))
#define UNIQUE(x) \
  sort(all(x)), x.erase(unique(all(x)), x.end()), x.shrink_to_fit()

template <typename T>
T POP(deque<T> &que) {
  T a = que.front();
  que.pop_front();
  return a;
}
template <typename T>
T POP(pq<T> &que) {
  T a = que.top();
  que.pop();
  return a;
}
template <typename T>
T POP(pqg<T> &que) {
  T a = que.top();
  que.pop();
  return a;
}
template <typename T>
T POP(vc<T> &que) {
  T a = que.back();
  que.pop_back();
  return a;
}

template <typename F>
ll binary_search(F check, ll ok, ll ng, bool check_ok = true) {
  if (check_ok) assert(check(ok));
  while (abs(ok - ng) > 1) {
    auto x = (ng + ok) / 2;
    (check(x) ? ok : ng) = x;
  }
  return ok;
}
template <typename F>
double binary_search_real(F check, double ok, double ng, int iter = 100) {
  FOR(iter) {
    double x = (ok + ng) / 2;
    (check(x) ? ok : ng) = x;
  }
  return (ok + ng) / 2;
}

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

// ? は -1
vc<int> s_to_vi(const string &S, char first_char) {
  vc<int> A(S.size());
  FOR(i, S.size()) { A[i] = (S[i] != '?' ? S[i] - first_char : -1); }
  return A;
}

template <typename T, typename U>
vector<T> cumsum(vector<U> &A, int off = 1) {
  int N = A.size();
  vector<T> B(N + 1);
  FOR(i, N) { B[i + 1] = B[i] + A[i]; }
  if (off == 0) B.erase(B.begin());
  return B;
}

// stable sort
template <typename T>
vector<int> argsort(const vector<T> &A) {
  vector<int> ids(len(A));
  iota(all(ids), 0);
  sort(all(ids),
       [&](int i, int j) { return (A[i] == A[j] ? i < j : A[i] < A[j]); });
  return ids;
}

// A[I[0]], A[I[1]], ...
template <typename T>
vc<T> rearrange(const vc<T> &A, const vc<int> &I) {
  vc<T> B(len(I));
  FOR(i, len(I)) B[i] = A[I[i]];
  return B;
}
#endif
#line 1 "library/other/io.hpp"
#define FASTIO
#include <unistd.h>

// https://judge.yosupo.jp/submission/21623
namespace fastio {
static constexpr uint32_t SZ = 1 << 17;
char ibuf[SZ];
char obuf[SZ];
char out[100];
// pointer of ibuf, obuf
uint32_t pil = 0, pir = 0, por = 0;

struct Pre {
  char num[10000][4];
  constexpr Pre() : num() {
    for (int i = 0; i < 10000; i++) {
      int n = i;
      for (int j = 3; j >= 0; j--) {
        num[i][j] = n % 10 | '0';
        n /= 10;
      }
    }
  }
} constexpr pre;

inline void load() {
  memcpy(ibuf, ibuf + pil, pir - pil);
  pir = pir - pil + fread(ibuf + pir - pil, 1, SZ - pir + pil, stdin);
  pil = 0;
  if (pir < SZ) ibuf[pir++] = '\n';
}

inline void flush() {
  fwrite(obuf, 1, por, stdout);
  por = 0;
}

void rd(char &c) {
  do {
    if (pil + 1 > pir) load();
    c = ibuf[pil++];
  } while (isspace(c));
}

void rd(string &x) {
  x.clear();
  char c;
  do {
    if (pil + 1 > pir) load();
    c = ibuf[pil++];
  } while (isspace(c));
  do {
    x += c;
    if (pil == pir) load();
    c = ibuf[pil++];
  } while (!isspace(c));
}

template <typename T>
void rd_real(T &x) {
  string s;
  rd(s);
  x = stod(s);
}

template <typename T>
void rd_integer(T &x) {
  if (pil + 100 > pir) load();
  char c;
  do
    c = ibuf[pil++];
  while (c < '-');
  bool minus = 0;
  if constexpr (is_signed<T>::value || is_same_v<T, i128>) {
    if (c == '-') { minus = 1, c = ibuf[pil++]; }
  }
  x = 0;
  while ('0' <= c) { x = x * 10 + (c & 15), c = ibuf[pil++]; }
  if constexpr (is_signed<T>::value || is_same_v<T, i128>) {
    if (minus) x = -x;
  }
}

void rd(int &x) { rd_integer(x); }
void rd(ll &x) { rd_integer(x); }
void rd(i128 &x) { rd_integer(x); }
void rd(u32 &x) { rd_integer(x); }
void rd(u64 &x) { rd_integer(x); }
void rd(u128 &x) { rd_integer(x); }
void rd(double &x) { rd_real(x); }
void rd(long double &x) { rd_real(x); }
void rd(f128 &x) { rd_real(x); }

template <class T, class U>
void rd(pair<T, U> &p) {
  return rd(p.first), rd(p.second);
}
template <size_t N = 0, typename T>
void rd_tuple(T &t) {
  if constexpr (N < std::tuple_size<T>::value) {
    auto &x = std::get<N>(t);
    rd(x);
    rd_tuple<N + 1>(t);
  }
}
template <class... T>
void rd(tuple<T...> &tpl) {
  rd_tuple(tpl);
}

template <size_t N = 0, typename T>
void rd(array<T, N> &x) {
  for (auto &d: x) rd(d);
}
template <class T>
void rd(vc<T> &x) {
  for (auto &d: x) rd(d);
}

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

void wt(const char c) {
  if (por == SZ) flush();
  obuf[por++] = c;
}
void wt(const string s) {
  for (char c: s) wt(c);
}
void wt(const char *s) {
  size_t len = strlen(s);
  for (size_t i = 0; i < len; i++) wt(s[i]);
}

template <typename T>
void wt_integer(T x) {
  if (por > SZ - 100) flush();
  if (x < 0) { obuf[por++] = '-', x = -x; }
  int outi;
  for (outi = 96; x >= 10000; outi -= 4) {
    memcpy(out + outi, pre.num[x % 10000], 4);
    x /= 10000;
  }
  if (x >= 1000) {
    memcpy(obuf + por, pre.num[x], 4);
    por += 4;
  } else if (x >= 100) {
    memcpy(obuf + por, pre.num[x] + 1, 3);
    por += 3;
  } else if (x >= 10) {
    int q = (x * 103) >> 10;
    obuf[por] = q | '0';
    obuf[por + 1] = (x - q * 10) | '0';
    por += 2;
  } else
    obuf[por++] = x | '0';
  memcpy(obuf + por, out + outi + 4, 96 - outi);
  por += 96 - outi;
}

template <typename T>
void wt_real(T x) {
  ostringstream oss;
  oss << fixed << setprecision(15) << double(x);
  string s = oss.str();
  wt(s);
}

void wt(int x) { wt_integer(x); }
void wt(ll x) { wt_integer(x); }
void wt(i128 x) { wt_integer(x); }
void wt(u32 x) { wt_integer(x); }
void wt(u64 x) { wt_integer(x); }
void wt(u128 x) { wt_integer(x); }
void wt(double x) { wt_real(x); }
void wt(long double x) { wt_real(x); }
void wt(f128 x) { wt_real(x); }

template <class T, class U>
void wt(const pair<T, U> val) {
  wt(val.first);
  wt(' ');
  wt(val.second);
}
template <size_t N = 0, typename T>
void wt_tuple(const T t) {
  if constexpr (N < std::tuple_size<T>::value) {
    if constexpr (N > 0) { wt(' '); }
    const auto x = std::get<N>(t);
    wt(x);
    wt_tuple<N + 1>(t);
  }
}
template <class... T>
void wt(tuple<T...> tpl) {
  wt_tuple(tpl);
}
template <class T, size_t S>
void wt(const array<T, S> val) {
  auto n = val.size();
  for (size_t i = 0; i < n; i++) {
    if (i) wt(' ');
    wt(val[i]);
  }
}
template <class T>
void wt(const vector<T> val) {
  auto n = val.size();
  for (size_t i = 0; i < n; i++) {
    if (i) wt(' ');
    wt(val[i]);
  }
}

void print() { wt('\n'); }
template <class Head, class... Tail>
void print(Head &&head, Tail &&... tail) {
  wt(head);
  if (sizeof...(Tail)) wt(' ');
  print(forward<Tail>(tail)...);
}

// gcc expansion. called automaticall after main.
void __attribute__((destructor)) _d() { flush(); }
} // namespace fastio
using fastio::read;
using fastio::print;
using fastio::flush;

#define INT(...)   \
  int __VA_ARGS__; \
  read(__VA_ARGS__)
#define LL(...)   \
  ll __VA_ARGS__; \
  read(__VA_ARGS__)
#define U32(...)   \
  u32 __VA_ARGS__; \
  read(__VA_ARGS__)
#define U64(...)   \
  u64 __VA_ARGS__; \
  read(__VA_ARGS__)
#define STR(...)      \
  string __VA_ARGS__; \
  read(__VA_ARGS__)
#define CHAR(...)   \
  char __VA_ARGS__; \
  read(__VA_ARGS__)
#define DBL(...)      \
  double __VA_ARGS__; \
  read(__VA_ARGS__)

#define VEC(type, name, size) \
  vector<type> name(size);    \
  read(name)
#define VV(type, name, h, w)                     \
  vector<vector<type>> name(h, vector<type>(w)); \
  read(name)

void YES(bool t = 1) { print(t ? "YES" : "NO"); }
void NO(bool t = 1) { YES(!t); }
void Yes(bool t = 1) { print(t ? "Yes" : "No"); }
void No(bool t = 1) { Yes(!t); }
void yes(bool t = 1) { print(t ? "yes" : "no"); }
void no(bool t = 1) { yes(!t); }
#line 3 "main.cpp"

void ng() { print("*"); }

void solve() {
  LL(N);
  vi A(N), B(N);
  vc<pi> query;
  FOR(i, 2 * N) {
    STR(S);
    char c = S[0];
    ll x = stoi(S.substr(1)) - 1;
    if (c == '+') A[x] = i, query.eb(1, x);
    if (c == '-') B[x] = i, query.eb(2, x);
  }
  FOR(i, N) if (A[i] > B[i]) return ng();

  vc<pi> X, Y;
  X.eb(-1, infty<ll>);
  Y.eb(-1, infty<ll>);
  char CX = 'G', CY = 'S';

  string ANS(N, '?');

  for (auto& [t, i]: query) {
    if (t == 2) {
      if (X.back().fi == i) { POP(X); }
      elif (Y.back().fi == i) { POP(Y); }
      else {
        return ng();
      }
    }
    if (X.back().se > Y.back().se) {
      swap(X, Y);
      swap(CX, CY);
    }
    if (t == 1) {
      if (X.back().se > B[i]) {
        X.eb(i, B[i]);
        ANS[i] = CX;
      }
      elif (Y.back().se > B[i]) {
        Y.eb(i, B[i]);
        ANS[i] = CY;
      }
      else {
        return ng();
      }
    }
  }
  print(ANS);
}

signed main() {
  solve();
  return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3964kb

input:

2
+2 +1 -1 -2

output:

GG

result:

ok correct

Test #2:

score: 0
Accepted
time: 0ms
memory: 3704kb

input:

2
+1 +2 -1 -2

output:

GS

result:

ok correct

Test #3:

score: 0
Accepted
time: 0ms
memory: 3588kb

input:

3
+1 +2 +3 -1 -2 -3

output:

*

result:

ok correct

Test #4:

score: 0
Accepted
time: 0ms
memory: 3640kb

input:

10
+3 -3 +4 -4 +6 +2 -2 -6 +7 -7 +5 -5 +10 +1 +9 +8 -8 -9 -1 -10

output:

GGGGGGGGGG

result:

ok correct

Test #5:

score: 0
Accepted
time: 0ms
memory: 3968kb

input:

10
+8 -8 +2 +10 -2 -10 +7 -7 +1 -1 +6 -6 +5 +3 +4 +9 -9 -4 -3 -5

output:

SGSSSSSGSS

result:

ok correct

Test #6:

score: 0
Accepted
time: 0ms
memory: 3700kb

input:

42
+26 -26 +12 +8 -12 -8 +30 +5 +22 +3 -3 +2 -30 +10 -10 -2 -22 +23 +39 -39 +17 -17 -23 +38 +24 -24 +27 +29 -29 -27 -38 -5 +37 -37 +21 +16 +28 -28 +6 +40 +14 +19 -19 -14 +11 +35 -35 -11 +4 +25 -25 -4 -40 -6 +13 +20 +1 -1 +33 +34 +7 -7 -34 +41 -41 +36 +31 -31 -36 +42 +32 -32 +15 +18 -18 -15 +9 -9 -42...

output:

GGSGGGGSGGGGGGGGGGGGGGGGGGGGGSGGGGGGGGGGGG

result:

ok correct

Test #7:

score: 0
Accepted
time: 0ms
memory: 3748kb

input:

42
+40 +18 +42 +2 +1 +21 +33 -2 +8 -33 -8 +14 -40 +34 +30 +31 -31 -30 +5 -5 +4 -34 +13 +3 -13 -3 -4 +28 -28 +17 -17 +35 +10 -10 +16 +39 +36 +37 -37 -36 -39 +25 +6 +41 -41 +20 +12 +32 -32 -25 -12 -16 -35 +38 -20 -38 -14 +15 -15 +9 +26 +23 -21 -1 +7 -23 +22 +24 -7 -24 -42 -18 -22 -26 -9 -6 +27 +29 -29...

output:

SGSGSGSGGSGGGSSSSSGGSGGGSGGSGSSSSSSSSSSGSS

result:

ok correct

Test #8:

score: 0
Accepted
time: 0ms
memory: 4004kb

input:

42
+29 +6 +7 +2 -7 -2 +23 -23 -6 -29 +19 -19 +16 +8 -16 -8 +32 -32 +3 +37 +17 -17 -37 -3 +22 -22 +18 +1 +40 +36 -1 -36 -40 -18 +9 -9 +30 +25 -25 +14 +39 +5 +20 -5 +12 -39 +28 +10 -14 +24 -24 +35 +15 -15 +41 -30 +33 -33 -41 -35 -10 -28 -12 +21 +38 -38 -21 +11 +13 -13 +4 +42 +27 +34 -34 +31 -31 +26 -2...

output:

SSSGSGGSSGGGGSSGSSGGGSGSSGGGGSGSGGGGSGSGGG

result:

ok correct

Test #9:

score: 0
Accepted
time: 0ms
memory: 3736kb

input:

100
+39 -39 +4 +71 -71 +53 -53 +46 -46 -4 +91 -91 +97 -97 +6 -6 +54 -54 +76 +35 -35 +50 +89 -89 +98 -50 -76 -98 +34 +55 +95 -34 +36 -36 +73 -95 -55 +18 +47 +20 +30 +33 -30 -33 +80 -73 +51 -51 -80 -20 +69 +77 -69 +85 +62 +84 -84 -77 +48 +49 -49 +1 -1 -48 +19 -19 -62 -85 +41 +16 -16 -41 +63 +2 -2 +65 ...

output:

GGGGGGGGGGGGGGGGGGGGGGGGGGGGGSGGGSGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGSGGGSGGGGGGSGGGGGGGGGGGGGSGG

result:

ok correct

Test #10:

score: 0
Accepted
time: 0ms
memory: 3948kb

input:

100
+5 -5 +61 +48 +60 +69 +7 -7 -69 -60 +45 -45 -48 -61 +68 +4 +82 +57 -57 +12 -12 +22 +46 -46 -22 +14 +30 -30 +47 -47 -14 +94 -94 -82 +44 +27 -27 -44 +86 -86 -4 +50 +15 -15 -50 -68 +58 -58 +28 +83 -83 -28 +53 +1 +56 -56 +67 +13 +73 +87 +19 +65 +18 -18 +17 -17 +89 +62 -62 -89 +72 -72 +25 -25 -65 +98...

output:

GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG

result:

ok correct

Test #11:

score: 0
Accepted
time: 0ms
memory: 4004kb

input:

100
+96 +64 -64 +41 +11 +62 +18 +25 +3 +26 -26 -3 +22 +61 +59 +73 -59 -73 -61 -62 +20 -41 -20 +46 -46 -22 +2 +10 -10 -2 -25 -18 +9 -9 -11 +60 +33 +97 +38 -38 +5 -5 -97 +81 +29 -29 -81 +92 +1 +52 -52 +87 +19 -19 +90 -90 -87 -1 -92 -33 -60 -96 +47 +6 +72 -72 +79 +98 +45 -45 +23 -23 -98 +35 -35 +27 -27...

output:

GSGGGGGGSSSGGGGGGSGSGSGGSGGGGGGGGGGGGGGGGGGGGSGGGGGGGGGGGGGGGGGGGGGGGGGGSGGGGGGGGGGGGGGGGGGGGGGGGGGG

result:

ok correct

Test #12:

score: -100
Wrong Answer
time: 0ms
memory: 3940kb

input:

171
+118 +125 +156 +76 +123 +61 +107 +15 +160 -15 -107 -160 +98 +127 -127 +152 -61 -123 +48 +139 +86 -86 +43 +129 +164 +167 +6 +9 +137 +20 +16 -20 -16 +11 +12 +133 +24 -24 -137 -133 +81 +71 +88 +142 -142 +105 -88 +93 +33 -33 -105 +85 +64 -64 +150 +5 -150 +121 -85 +1 -121 +41 -5 +53 +67 +3 -3 +72 +10...

output:

*

result:

wrong answer team and jury output doesn't agree on whether there's an assignment