Submission #1001096

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001096		shmax	Jousting tournament (IOI12_tournament)	C++17	0 / 100	1061 ms	2260 KiB

tournament

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

//#pragma GCC optimize("O3")
//#pragma GCC target("avx,avx2,fma")
//#pragma GCC optimization ("unroll-loops")
//#pragma GCC target("avx,avx2,sse,sse2,sse3,sse4,popcnt")

using namespace std;
using namespace __gnu_pbds;
#define int long long
#define float long double
#define elif else if
#define endl "\n"
#define mod 1000000007
#define pi acos(-1)
#define eps 0.000000001
#define inf 1000'000'000'000'000'000LL
#define FIXED(a) cout << fixed << setprecision(a)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define time_init auto start = std::chrono::high_resolution_clock::now()
#define time_report                                       \
    auto end = std::chrono::high_resolution_clock::now(); \
    std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count() << " ms" << endl
#define debug(x) \
    { cerr << #x << " = " << x << endl; }
#define len(x) (int) x.size()
#define sqr(x) ((x) * (x))
#define cube(x) ((x) * (x) * (x))
#define bit(x, i) (((x) >> (i)) & 1)
#define set_bit(x, i) ((x) | (1LL << (i)))
#define clear_bit(x, i) ((x) & (~(1LL << (i))))
#define toggle_bit(x, i) ((x) ^ (1LL << (i)))
#define low_bit(x) ((x) & (-(x)))
#define count_bit(x) __builtin_popcountll(x)
#define srt(x) sort(all(x))
#define rsrt(x) sort(rall(x))
#define mp make_pair
#define maxel(x) (*max_element(all(x)))
#define minel(x) (*min_element(all(x)))
#define maxelpos(x) (max_element(all(x)) - x.begin())
#define minelpos(x) (min_element(all(x)) - x.begin())
#define sum(x) (accumulate(all(x), 0LL))
#define product(x) (accumulate(all(x), 1LL, multiplies<int>()))
#define gcd __gcd
#define lcm(a, b) ((a) / gcd(a, b) * (b))
#define rev(x) (reverse(all(x)))
#define shift_left(x, k) (rotate(x.begin(), x.begin() + k, x.end()))
#define shift_right(x, k) (rotate(x.rbegin(), x.rbegin() + k, x.rend()))
#define is_sorted(x) (is_sorted_until(all(x)) == x.end())
#define is_even(x) (((x) &1) == 0)
#define is_odd(x) (((x) &1) == 1)
#define pow2(x) (1LL << (x))

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        // http://xorshift.di.unimi.it/splitmix64.c
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

template<typename T>
using min_heap = priority_queue<T, vector<T>, greater<T>>;
template<typename T>
using max_heap = priority_queue<T, vector<T>, less<T>>;
template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T>
using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T>
using matrix = vector<vector<T>>;
template<typename T>
using graph = vector<vector<T>>;
using hashmap = gp_hash_table<int, int, custom_hash>;

template<typename T>
vector<T> vect(int n, T val) {
    return vector<T>(n, val);
}

template<typename T>
vector<vector<T>> vect(int n, int m, T val) {
    return vector<vector<T>>(n, vector<T>(m, val));
}

template<typename T>
vector<vector<vector<T>>> vect(int n, int m, int k, T val) {
    return vector<vector<vector<T>>>(n, vector<vector<T>>(m, vector<T>(k, val)));
}

template<typename T>
vector<vector<vector<vector<T>>>> vect(int n, int m, int k, int l, T val) {
    return vector<vector<vector<vector<T>>>>(n, vector<vector<vector<T>>>(m, vector<vector<T>>(k, vector<T>(l, val))));
}

template<typename T>
matrix<T> new_matrix(int n, int m, T val) {
    return matrix<T>(n, vector<T>(m, val));
}

template<typename T>
graph<T> new_graph(int n) {
    return graph<T>(n);
}

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);
}

using i8 = int8_t;
using i16 = int16_t;
using i32 = int32_t;
using i64 = int64_t;
using i128 = __int128_t;
using u8 = uint8_t;
using u16 = uint16_t;
using u32 = uint32_t;
using u64 = uint64_t;
using u128 = __uint128_t;

template<typename T>
using vec = vector<T>;

using pII = pair<int, int>;
template<typename T>
using enumerated = pair<T, int>;

template<typename it>
struct SparseTable {

    using T = typename remove_reference<decltype(*declval<it>())>::type;
    vector<vector<T>> t;
    function<T(T, T)> f;
    vector<int> log;

    SparseTable() = default;

    SparseTable(it first, it last, function<T(T, T)> op) : t(1), f(op) {
        int n = distance(first, last);
        t.assign(32 - __builtin_clz(n), vector<T>(n));
        t[0].assign(first, last);
        //       calc log
        log.resize(n + 1);
        for (int i = 2; i <= n; i++)
            log[i] = log[i / 2] + 1;

        for (int i = 1; i < t.size(); i++)
            for (int j = 0; j < n - (1 << i) + 1; j++)
                t[i][j] = f(t[i - 1][j], t[i - 1][j + (1 << (i - 1))]);
    }

    // returns f(a[l..r]) in O(1) time
    T get(int l, int r) {
        int h = log[r - l + 1];
        return f(t[h][l], t[h][r - (1 << h) + 1]);
    }
};


int solve(int n, int c, int R, const vec<int> &k, vec<pair<int, int>> segs) {
    vec<bool> t(n, true);
    auto disable = [&](int l, int r) {
        for (int i = l; i <= r; i++) {
            t[i] = false;
        }
    };
    auto findk = [&](int id) {
        for (int i = 0; i < n; i++) {
            if (t[i]) {
                if (id == 0) {
                    return i;
                }
                id--;
            }
        }
        return -1LL;
    };
    for (int i = 0; i < c; i++) {
        int f = findk(segs[i].first);
        int s = findk(segs[i].second);
        segs[i] = {f, s};
        disable(f, s - 1);
    }

    vec<int> v(n * 2 - 1, -1);
    for (int i = 1; i < len(v); i += 2) {
        if (k[(i - 1) / 2] < R) {
            v[i] = 0;
        } else {
            v[i] = 1;
        }
    }

    int best = 0;
    int id = 0;
    for (int i = 0; i < n; i++) {
        vec<int> cur(n, -1);
        cur[i] = R;
        int ptr = 0;
        for (int j = 0; j < n; j++) {
            if (cur[j] == -1) continue;
            cur[j] = k[ptr++];
        }
        SparseTable stmax(all(cur), [](int a, int b) { return max(a, b); });
        int ans = 0;
        for (auto [l, r]: segs) {
            if (r < i or l > i) continue;
            ans += stmax.get(l, r) == R;
        }
        if (chmax(best, ans)) {
            id = i;
        }
    }
    return id;
}

i32 GetBestPosition(i32 N, i32 C, i32 R, i32 *K, i32 *S, i32 *E) {
    vec<int> k(K, K + N - 1);
    vec<pair<int, int>> segs;
    for (int i = 0; i < C; i++) {
        segs.emplace_back(S[i], E[i]);
    }
    return solve(N, C, R, k, segs);
}

Compilation message (stderr)

tournament.cpp: In instantiation of 'SparseTable<it>::SparseTable(it, it, std::function<typename std::remove_reference<decltype (* declval<it>())>::type(typename std::remove_reference<decltype (* declval<it>())>::type, typename std::remove_reference<decltype (* declval<it>())>::type)>) [with it = __gnu_cxx::__normal_iterator<long long int*, std::vector<long long int> >; typename std::remove_reference<decltype (* declval<it>())>::type = long long int]':
tournament.cpp:219:75:   required from here
tournament.cpp:162:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int>, std::allocator<std::vector<long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  162 |         for (int i = 1; i < t.size(); i++)
      |                         ~~^~~~~~~~~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 32
• Subtask 3: 0 / 51