Submission #597811

#	Time	Username	Problem	Language	Result	Execution time	Memory
597811		skittles1412	Last supper (IOI12_supper)	C++17	0 / 100	252 ms	16784 KiB

advisor

#include "bits/extc++.h"

using namespace std;

template <typename T>
void dbgh(const T& t) {
    cerr << t << endl;
}

template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
    cerr << t << " | ";
    dbgh(u...);
}

#ifdef DEBUG
#define dbg(...)                                              \
    cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]: "; \
    dbgh(__VA_ARGS__);
#else
#define dbg(...)
#define cerr   \
    if (false) \
    cerr
#endif

#define endl "\n"
#define long int64_t
#define sz(x) int((x).size())

void WriteAdvice(unsigned char a);

void write(int bits, int x) {
    for (int i = 0; i < bits; i++) {
        WriteAdvice((x >> i) & 1);
    }
}

void ComputeAdvice(int *arr, int n, int k, int) {
    int bits = __lg(k - 1) + 1;
    vector<int> inds[n];
    for (int i = 0; i < n; i++) {
        inds[arr[i]].push_back(i);
    }
    for (auto& a : inds) {
        a.push_back(n);
        reverse(begin(a), end(a));
    }
    int in[n];
    memset(in, -1, sizeof(in));
    priority_queue<pair<int, int>> pq;
    for (int i = 0; i < k; i++) {
        pq.emplace(inds[i].back(), i);
        in[i] = i;
    }
    for (int i = 0; i < n; i++) {
        inds[arr[i]].pop_back();
        if (in[arr[i]] != -1) {
            continue;
        }
        int x = pq.top().second;
        pq.pop();
        write(bits, in[x]);
        swap(in[x], in[arr[i]]);
        pq.emplace(inds[arr[i]].back(), arr[i]);
    }
}

assistant

#include "bits/extc++.h"

using namespace std;

template <typename T>
void dbgh(const T& t) {
    cerr << t << endl;
}

template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
    cerr << t << " | ";
    dbgh(u...);
}

#ifdef DEBUG
#define dbg(...)                                              \
    cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]: "; \
    dbgh(__VA_ARGS__);
#else
#define dbg(...)
#define cerr   \
    if (false) \
    cerr
#endif

#define endl "\n"
#define long int64_t
#define sz(x) int((x).size())

int GetRequest();
void PutBack(int T);

int read(unsigned char*& ptr, int bits) {
    int x = 0;
    for (int i = 0; i < bits; i++) {
        x |= *(ptr++) << i;
    }
    return x;
}

void Assist(unsigned char* buf, int n, int k, int) {
    int bits = __lg(k - 1) + 1;
    int vals[k], inds[n];
    iota(vals, vals + k, 0);
    memset(inds, -1, sizeof(inds));
    iota(inds, inds + k, 0);
    for (int i = 0; i < n; i++) {
        int cur = GetRequest();
        if (inds[cur] != -1) {
            continue;
        }
        int x = read(buf, bits);
        PutBack(vals[x]);
        swap(inds[vals[x]], inds[cur]);
        vals[x] = cur;
    }
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 35
• Subtask 5: 0 / 39