Submission #144817

#	Time	Username	Problem	Language	Result	Execution time	Memory
144817		SamAnd	Zagonetka (COI18_zagonetka)	C++17	100 / 100	149 ms	632 KiB

zagonetka

#include <bits/stdc++.h>
using namespace std;
const int N = 102;

int n;

bool qry(int a[])
{
    cout << "query";
    for (int k = 1; k <= n; ++k)
        cout << ' ' << a[k];
    cout << endl;
    int x;
    cin >> x;
    return x;
}

int a[N];

int b[N];
vector<int> g[N];

int z;
bool c[N];
int u[N];
void dfs(int x)
{
    c[x] = true;
    for (int i = 0; i < g[x].size(); ++i)
    {
        int h = g[x][i];
        if (!c[h])
            dfs(h);
    }
    u[x] = ++z;
}

set<int> s[N];
void dfs1(int x)
{
    c[x] = true;
    for (int i = 0; i < g[x].size(); ++i)
    {
        int h = g[x][i];
        s[x].insert(h);
        if (!c[h])
            dfs1(h);
        for (set<int>::iterator it = s[h].begin(); it != s[h].end(); ++it)
            s[x].insert(*it);
    }
}

int minu[N];
void dfs2(int x)
{
    c[x] = true;
    sort(g[x].begin(), g[x].end());
    for (int i = 0; i < g[x].size(); ++i)
    {
        int h = g[x][i];
        if (!c[h])
            dfs2(h);
    }
    minu[x] = ++z;
}

vector<int> gg[N];
int maxu[N];
void dfs3(int x)
{
    c[x] = true;
    sort(gg[x].begin(), gg[x].end());
    for (int i = 0; i < gg[x].size(); ++i)
    {
        int h = gg[x][i];
        if (!c[h])
            dfs3(h);
    }
    maxu[x] = --z;
}

int main()
{
    cin >> n;
    for (int i = 1; i <= n; ++i)
        cin >> a[i];
    for (int i = 1; i <= n; ++i)
    {
        b[a[i]] = i;
    }
    for (int i = 2; i <= n; ++i)
    {
        for (int j = i - 1; j >= 1; --j)
        {
            g[b[j]].push_back(b[i]);
            for (int k = 1; k <= n; ++k)
                u[k] = a[k];
            for (int k = 1; k <= i; ++k)
                u[b[k]] = 0;
            memset(c, false, sizeof c);
            z = 0;
            for (int k = 1; k <= i; ++k)
            {
                if (!c[b[k]])
                    dfs(b[k]);
            }
            if (qry(u) == 0)
                g[b[i]].push_back(b[j]);
            g[b[j]].pop_back();
        }
    }
    cout << "end" << endl;
    memset(c, false, sizeof c);
    for (int x = 1; x <= n; ++x)
    {
        if (!c[x])
            dfs1(x);
    }
    for (int x = 1; x <= n; ++x)
    {
        g[x].clear();
        for (set<int>::iterator it = s[x].begin(); it != s[x].end(); ++it)
            g[x].push_back(*it);
    }
    for (int x = 1; x <= n; ++x)
    {
        for (int i = 0; i < g[x].size(); ++i)
        {
            int h = g[x][i];
            gg[h].push_back(x);
        }
    }
    memset(c, false, sizeof c);
    z = 0;
    for (int x = 1; x <= n; ++x)
    {
        if (!c[x])
            dfs2(x);
    }
    memset(c, false, sizeof c);
    z = n + 1;
    for (int x = 1; x <= n; ++x)
    {
        if (!c[x])
            dfs3(x);
    }
    for (int i = 1; i <= n; ++i)
        cout << minu[i] << ' ';
    cout << endl;
    for (int i = 1; i <= n; ++i)
        cout << maxu[i] << ' ';
    cout << endl;
    return 0;
}

Compilation message (stderr)

zagonetka.cpp: In function 'void dfs(int)':
zagonetka.cpp:29:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < g[x].size(); ++i)
                     ~~^~~~~~~~~~~~~
zagonetka.cpp: In function 'void dfs1(int)':
zagonetka.cpp:42:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < g[x].size(); ++i)
                     ~~^~~~~~~~~~~~~
zagonetka.cpp: In function 'void dfs2(int)':
zagonetka.cpp:58:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < g[x].size(); ++i)
                     ~~^~~~~~~~~~~~~
zagonetka.cpp: In function 'void dfs3(int)':
zagonetka.cpp:73:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < gg[x].size(); ++i)
                     ~~^~~~~~~~~~~~~~
zagonetka.cpp: In function 'int main()':
zagonetka.cpp:127:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int i = 0; i < g[x].size(); ++i)
                         ~~^~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 18 / 18
• Subtask 3: 22 / 22
• Subtask 4: 51 / 51