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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#599561#9427. Collect the Coinsucup-team3635#WA 40ms4584kbC++2312.2kb2024-09-29 06:40:042024-09-29 06:40:05

Judging History

你现在查看的是最新测评结果

  • [2024-11-06 15:56:27]
  • hack成功，自动添加数据
  • (/hack/1139)
  • [2024-09-29 06:40:05]
  • 评测
  • 测评结果：WA
  • 用时：40ms
  • 内存：4584kb
查看
  • [2024-09-29 06:40:04]
  • 提交

answer

#ifndef SorahISA
#define SorahISA
#include SorahISA __FILE__ SorahISA

const int INF = INT_MAX >> 1;

int div_ceil(int a, int b) {
    if (b == 0) return clamp<int>(a, -1, 1) * INF;
    if ((a < 0) ^ (b < 0)) return a / b;
    return (a + b - 1) / b;
}

void solve() {
    int N; cin >> N;
    
    vector<pii> coin(N);
    for (auto &[t, c] : coin) cin >> t >> c;
    
    for (int i = 0; i+2 < N; ++i) {
        if (coin[i].first == coin[i+2].first) { cout << -1 << "\n"; return; }
    }
    
    sort(ALL(coin), [&](pii &c1, pii &c2) { return pii(c1.second, c1.first) < pii(c2.second, c2.first); });
    
    auto check_spd = [&](const set<pii> &robot, pii tc) -> int {
        auto [t, c] = tc;
        auto it_r = robot.lower_bound({t, c});
        auto it_l = it_r;
        if (it_l != begin(robot)) it_l = prev(it_l);
        
        int spd = 0;
        if (it_l != end(robot)) chmax(spd, div_ceil(abs(it_l->second - c), abs(it_l->first - t)));
        if (it_r != end(robot)) chmax(spd, div_ceil(abs(it_r->second - c), abs(it_r->first - t)));
        return spd;
    };
    
    int ans = 0, l = 0, r = N-1;
    set<pii> robot_1, robot_2; /// (t, c)
    while (l <= r) {
        int spd_l1 = check_spd(robot_1, coin[l]), spd_r1 = check_spd(robot_1, coin[r]);
        int spd_l2 = check_spd(robot_2, coin[l]), spd_r2 = check_spd(robot_2, coin[r]);
             if (spd_l1 <= ans)     robot_1.ee(coin[l++]);
        else if (spd_r2 <= ans)     robot_2.ee(coin[r--]);
        else if (spd_l1 == INF)     robot_2.ee(coin[l++]), chmax(ans, spd_l2);
        else if (spd_r2 == INF)     robot_1.ee(coin[r--]), chmax(ans, spd_r1);
        else if (spd_l1 <= spd_r2)  robot_1.ee(coin[l++]), chmax(ans, spd_l1);
        else                        robot_2.ee(coin[r--]), chmax(ans, spd_r2);
    }
    cout << ans << "\n";
}

/*
1
5
1 0
1 1
2 1
3 0
3 1000000000
*/

int32_t main() {
    fastIO();
    
    int t = 1; cin >> t;
    for (int _ = 1; _ <= t; ++_) {
        // cout << "Case #" << _ << ": ";
        solve();
    }
    
    return 0;
}

#else

#ifdef local
#define _GLIBCXX_DEBUG 1
#endif
#pragma GCC optimize("Ofast", "unroll-loops")
#include <bits/stdc++.h>
using namespace std;
// #include <bits/extc++.h>
// #include <tr2/dynamic_bitset>

using i64 = long long;
using i128 = __int128;
#define int i64
using f80 = long double;
using f128 = __float128;
#define double f80
using pii = pair<int, int>;
template <typename T> using Prior = std::priority_queue<T>;
template <typename T> using prior = std::priority_queue<T, vector<T>, greater<T>>;

// #define X first
// #define Y second
#define eb emplace_back
#define ef emplace_front
#define ee emplace
#define pb pop_back
#define pf pop_front
#define ALL(x) begin(x), end(x)
#define RALL(x) rbegin(x), rend(x)
#define SZ(x) ((int)(x).size())

// template <size_t D, typename T> struct Vec : vector<Vec<D-1, T>> {
//     static_assert(D >= 1, "Vector dimension must be greater than zero!");
//     template <typename... Args> Vec(int n = 0, Args... args) : vector<Vec<D-1, T>>(n, Vec<D-1, T>(args...)) {}
// };

// template <typename T> struct Vec<1, T> : vector<T> {
//     Vec(int n = 0, const T& val = T()) : vector<T>(n, val) {}
// };

#ifdef local
#define fastIO() void()
#define debug(...) \
    _color.emplace_back("\u001b[31m"), \
    fprintf(stderr, "%sAt [%s], line %d: (%s) = ", _color.back().c_str(), __FUNCTION__, __LINE__, #__VA_ARGS__), \
    _do(__VA_ARGS__), _color.pop_back(), \
    fprintf(stderr, "%s", _color.back().c_str())
#define print(...) \
    fprintf(stdout, "%s", "\u001b[36m"), \
    _P(__VA_ARGS__), \
    fprintf(stdout, "%s", "\u001b[0m")

deque<string> _color{"\u001b[0m"};

template <typename T> concept is_string = is_same_v<T, string&> or is_same_v<T, const string&>;
template <typename T> concept is_iterable = requires (T _t) { begin(_t); };

template <typename T> inline void _print_err(T &&_t);
template <typename T> inline void _print_err(T &&_t) requires is_iterable<T> and (not is_string<T>);
template <size_t I, typename ...U> inline typename enable_if<I == sizeof...(U), void>::type _print_err(const tuple<U...> &);
template <size_t I, typename ...U> inline typename enable_if<I <  sizeof...(U), void>::type _print_err(const tuple<U...> &_t);
template <size_t I, typename ...U> inline typename enable_if<I == sizeof...(U), void>::type _print_err(tuple<U...> &);
template <size_t I, typename ...U> inline typename enable_if<I <  sizeof...(U), void>::type _print_err(tuple<U...> &_t);
template <typename T, typename U> ostream& operator << (ostream &os, const pair<T, U> &_tu);

inline void _do() { cerr << "\n"; }
template <typename T> inline void _do(T &&_t) { _print_err(_t), cerr << "\n"; }
template <typename T, typename ...U> inline void _do(T &&_t, U &&..._u) { _print_err(_t), cerr << ", ", _do(_u...); }
#else
#define fastIO() ios_base::sync_with_stdio(0), cin.tie(0)
#define debug(...) void()
#define print(...) _P(__VA_ARGS__)
#endif

inline void _P() { cout << "\n"; }
template <typename T> inline void _P(T &&_t) { cout << _t << "\n"; }
template <typename T, typename ...U> inline void _P(T &&_t, U &&..._u) { cout << _t << " ", _P(_u...); }

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

inline int getRand(int L, int R) {
    if (L > R) swap(L, R);
    return (int)(rng() % ((uint64_t)R - L + 1) + L);
}

template <typename T, typename U> bool chmin(T &lhs, U rhs) { return lhs > rhs ? lhs = rhs, 1 : 0; }
template <typename T, typename U> bool chmax(T &lhs, U rhs) { return lhs < rhs ? lhs = rhs, 1 : 0; }

/// below are Fast I/O and _print_err templates ///

/*
/// Fast I/O by FHVirus ///
/// https://fhvirus.github.io/blog/2020/fhvirus-io/ ///

#include <unistd.h>

const int S = 65536;

int OP = 0;
char OB[S];

inline char RC() {
    static char buf[S], *p = buf, *q = buf;
    return p == q and (q = (p = buf) + read(0, buf, S)) == buf ? -1 : *p++;
}

inline int RI() {
    static char c;
    int a;
    while (((c = RC()) < '0' or c > '9') and c != '-' and c != -1);
    if (c == '-') {
        a = 0;
        while ((c = RC()) >= '0' and c <= '9') a *= 10, a -= c ^ '0';
    }
    else {
        a = c ^ '0';
        while ((c = RC()) >= '0' and c <= '9') a *= 10, a += c ^ '0';
    }
    return a;
}

inline void WI(int n, char c = '\n') {
    static char buf[20], p;
    if (n == 0) OB[OP++] = '0';
    p = 0;
    if (n < 0) {
        OB[OP++] = '-';
        while (n) buf[p++] = '0' - (n % 10), n /= 10;
    }
    else {
        while (n) buf[p++] = '0' + (n % 10), n /= 10;
    }
    for (--p; p >= 0; --p) OB[OP++] = buf[p];
    OB[OP++] = c;
    if (OP > S-20) write(1, OB, OP), OP = 0;
}

/// Fast I/O by FHVirus ///
/// https://fhvirus.github.io/blog/2020/fhvirus-io/ ///
*/

#ifdef local

template <typename T> inline void _print_err(T &&_t) { cerr << _t; }

template <typename T> inline void _print_err(T &&_t) requires is_iterable<T> and (not is_string<T>) {
    string _tmp_color = _color.back();
    ++_tmp_color[3], _color.emplace_back(_tmp_color);
    cerr << _color.back() << "[";
    for (bool _first = true; auto &_x : _t) {
        if (!_first) cerr << ", ";
        _print_err(_x), _first = false;
    }
    cerr << "]" << (_color.pop_back(), _color.back());
}

template <typename T, typename U> ostream& operator << (ostream &os, const pair<T, U> &_tu) {
    string _tmp_color = _color.back();
    ++_tmp_color[3], _color.emplace_back(_tmp_color);
    cerr << _color.back() << "(";
    _print_err(_tu.first), cerr << ", ", _print_err(_tu.second);
    cerr << ")" << (_color.pop_back(), _color.back());
    return os;
}

template <size_t I = 0, typename ...U> inline typename enable_if<I == sizeof...(U), void>::type _print_err(const tuple<U...> &) {
    cerr << ")" << (_color.pop_back(), _color.back());
}

template <size_t I = 0, typename ...U> inline typename enable_if<I <  sizeof...(U), void>::type _print_err(const tuple<U...> &_t) {
    if (!I) {
        string _tmp_color = _color.back();
        ++_tmp_color[3], _color.emplace_back(_tmp_color);
        cerr << _color.back();
    }
    cerr << (I ? ", " : "("), _print_err(get<I>(_t)), _print_err<I+1, U...>(_t);
}

template <size_t I = 0, typename ...U> inline typename enable_if<I == sizeof...(U), void>::type _print_err(tuple<U...> &) {
    cerr << ")" << (_color.pop_back(), _color.back());
}

template <size_t I = 0, typename ...U> inline typename enable_if<I <  sizeof...(U), void>::type _print_err(tuple<U...> &_t) {
    if (!I) {
        string _tmp_color = _color.back();
        ++_tmp_color[3], _color.emplace_back(_tmp_color);
        cerr << _color.back();
    }
    cerr << (I ? ", " : "("), _print_err(get<I>(_t)), _print_err<I+1, U...>(_t);
}

#endif

#endif

/**
 *                                                                                                                 
 *                                                                                                                 
 *                                                                                                                 
 *                            iiiiii         iiiiiiiiii       iiiiiiiiiiiiii                                       
 *                       iiiiiiiiiiiii   iiiiiii    iiii    iiiiiiiiiiiiiii                          ii   iiii     
 *                    iiiiiiii     iiiiiiiii         iiii       iiii iii              iii          iiiiiiiiii      
 *                 iiiiiii          iiiiii           iiii    iiii   ii           iiiiiiiiii      iiii iiii         
 *               iiiiii            iiiii             iiii iiii        iii      iiii    iiiiiiiiiiiiiiiii  ii       
 *             iiiiii            iiiiiii            iiiiiii       iiiiiiii   iii    iiiiiiiiiiiiii iii  iiii       
 *           iiiiii             iiiiiii            iiiii   ii   iiii       iiiiiiiiiii iiii  iii iiii iiii      iii
 *          iiiii              iiiiiiii       ii        iiiii iiii    iiiiiiiii        iii iii  iii  iii  ii  iiii 
 *        iiiiii              iiiiiiii      iiiii     iiiii iiiiiiiiiiiiiiii         iii  iii  ii  iii  iii iiii   
 *       iiiii                 iiiiii     iiii     iiiiii iiiiiii    iii iii       iiii  ii   i   ii  iii  iii     
 *     iiiiii                            iiii  iiiiiiiiiiiiiii       iii iiii   iiiii  iii  ii  iii  iii  ii       
 *    iiiii                              iiiiiiii iiiiiiiiii       iiii   iiiiiiiii            ii  iii  ii         
 *   iiiii                                     iiiiii  iiii      iiiii              iii      ii   ii  i            
 * iiiiii                                  iiiiiiii   iiiii    iiiii                        ii  ii   ii            
 * iiiii                                iiii  iiii    iiiiiiiiiiii                             ii                  
 *  iii                              iiii   iiii       iiiiiiii                                                    
 *                                iiiii   iiii                                                                     
 *                              iiii     iiii                                                                      
 *                            iiii    iiiii                                                                        
 *                          iii     iiiii                                                                          
 *                        iii     iiiii                                                                            
 *                       iii   iiiiii                                                                              
 *                       iiiiiiiii                                                                                 
 *                       iiiiii                                                                                    
 *                                                                                                                 
 *                                                                                                                 
 *                                                                                                                 
**/
Source code, Language: C++23

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3640kb

input:

3
5
1 1
3 7
3 4
4 3
5 10
1
10 100
3
10 100
10 1000
10 10000

output:

2
0
-1

result:

ok 3 lines

Test #2:

score: -100
Wrong Answer
time: 40ms
memory: 4584kb

input:

1135
2
6 5
8 8
8
2 9
2 10
4 4
5 3
6 2
6 8
8 2
8 7
1
9 1
6
4 6
6 1
6 2
9 10
10 1
10 7
5
1 6
2 5
6 7
8 6
10 3
8
1 10
5 4
5 7
6 1
6 6
8 4
9 1
9 4
8
1 1
1 3
2 9
3 3
5 9
6 10
9 7
10 7
3
5 8
6 6
10 6
7
2 9
4 7
5 10
6 3
6 7
8 9
10 1
6
1 4
2 8
5 9
7 10
9 1
10 5
9
2 7
4 5
5 9
6 10
7 4
9 4
9 9
10 3
10 7
1
3 1...

output:

0
3
0
3
1
3
6
0
3
2
2
0
2
5
0
1
5
1
2
0
0
0
1
4
2
0
2
1
3
0
3
2
3
2
5
3
1
1
0
1
1
1
0
2
0
1
0
1
0
2
1
0
2
3
4
4
1
1
1
0
1
3
0
1
4
4
3
0
0
2
2
6
4
2
1
0
0
1
0
3
1
2
0
1
1
3
0
0
1
2
0
3
0
2
2
2
1
0
0
0
5
1
2
0
6
1
1
1
2
2
2
0
3
1
4
3
6
0
8
1
1
3
0
2
2
4
1
1
0
0
0
7
2
2
1
0
0
3
1
2
1
1
2
5
3
0
3
3
3
5
...

result:

wrong answer 80th lines differ - expected: '2', found: '3'
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