Submission #1083134

#	Time	Username	Problem	Language	Result	Execution time	Memory
1083134		codefox	Last supper (IOI12_supper)	C++14	100 / 100	74 ms	8616 KiB

advisor

#include <bits/stdc++.h>
#include "advisor.h"

using namespace std;
#define pii pair<int, int>

void ComputeAdvice(int *C, int N, int K, int M)
{
    int H = K+N;
    vector<int> next(H, 0);
    vector<int> last(N, 1e9);
    for (int i = N-1; i >= 0; i--)
    {
        next[i+K] = last[C[i]];
        last[C[i]]=i+K;
    }
    for (int i = 0; i < K; i++)
    {
        next[i] = last[i];
    }
    set<pii> follow;
    vector<int> first(N, -1);
    vector<int> ins(N, 0);
    vector<int> del(N+K, 0);

    vector<int> CC(H);
    for (int i = 0; i < K; i++) CC[i] = i;
    for (int i = 0; i < N; i++) CC[i+K] = C[i];

    for (int i = 0; i < K; i++)
    {
        first[i] = i;
        follow.insert({next[i], i});
        ins[i] = 1;
    }
    for (int i = K; i < H; i++)
    {
        if (ins[CC[i]])
        {
            follow.erase({i, first[CC[i]]});
            follow.insert({next[i], i});
        }
        else
        {
            pii ab = *(--follow.end());
            follow.erase(ab);
            ins[CC[ab.second]] = 0;
            del[ab.second] = 1;
            ins[CC[i]] = 1;
            follow.insert({next[i], i});
        }
        first[CC[i]] = i;
    }
    for (int i = 0; i < H; i++)
    {
        WriteAdvice(del[i]);
    }
}

assistant

#include <bits/stdc++.h>
#include "assistant.h"

using namespace std;

void Assist(unsigned char *A, int N, int K, int R)
{
    queue<int> del;
    vector<int> ins(N, 0);
    for (int i = 0; i < K; i++)
    {
        ins[i] = 1;
        if (A[i]) del.push(i);
    }
    for (int i = K; i < N+K; i++)
    {
        int g = GetRequest();
        if (!ins[g])
        {
            ins[del.front()]=0;
            ins[g] = 1;
            PutBack(del.front());
            del.pop();
        }
        if (A[i]) del.push(g);
    }
}

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