Submission #698191

#	Time	Username	Problem	Language	Result	Execution time	Memory
698191		pls33	Regions (IOI09_regions)	C++17	Compilation error	0 ms	0 KiB

regions

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

using namespace std;
using namespace __gnu_pbds;

#pragma region dalykai
using p32 = pair<int, int>;
using p32u = pair<uint32_t, uint32_t>;
using p64 = pair<int64_t, int64_t>;
using p64u = pair<uint64_t, uint64_t>;
using vi16 = vector<int16_t>;
using vi16u = vector<uint16_t>;
using vi32 = vector<int>;
using vi32u = vector<uint32_t>;
using vi64 = vector<int64_t>;
using vi64u = vector<uint64_t>;
using vp32 = vector<p32>;
using vp32u = vector<p32u>;
using vp64 = vector<p64>;
using vp64u = vector<p64u>;
using vvi32 = vector<vi32>;
using vvi32u = vector<vi32u>;
using vvi64 = vector<vi64>;
using vvi64u = vector<vi64u>;
using vvp32 = vector<vp32>;
using vvp32u = vector<vp32u>;
using vvp64 = vector<vp64>;
using vvp64u = vector<vp64u>;
#pragma endregion

using map_t = map<int, int>;

void merge_region(map_t &region, map_t &manager)
{
    for (auto &[color, count] : manager)
    {
        region[color] += count;
    }
}

void merge_manager(map_t &manager, map_t &employee)
{
    if (employee.size() > manager.size())
    {
        swap(employee, manager);
    }

    merge_region(manager, employee);
}

void find_regions(int v, int p,
                  vector<map_t> &count, vector<map_t> &employee,
                  vi32 &region, vvi32 &adj)
{
    employee[v][region[v]]++;

    for (auto &next : adj[v])
    {
        if (next == p)
        {
            continue;
        }

        find_regions(next, v, count, employee, region, adj);
        merge_manager(employee[v], employee[next]);
    }

    merge_region(count[region[v]], employee[v]);
}

int main()
{
#ifndef _AAAAAAAAA
    ios_base::sync_with_stdio(false);
    cin.tie(0);
#else
    freopen("region.in", "r", stdin);
#ifndef __linux__
    atexit([]()
           {
    freopen("con", "r", stdin);
    system("pause"); });
#endif
#endif

    int n, r, q;
    cin >> n >> r >> q;

    vi32 region(n);
    vvi32 adj(n);

    cin >> region[0];
    region[0]--;

    for (int i = 1; i < n; i++)
    {
        int parent;
        cin >> parent >> region[i];

        parent--;
        region[i]--;
        adj[i].push_back(parent);
        adj[parent].push_back(i);
    }

    vector<map_t> count(r), employee(n);
    find_regions(0, -1, count, employee, region, adj);

    for (int i = 0; i < q; i++)
    {
        int a, b;
        cin >> a >> b;

        a--;
        b--;

        if (!count[a].contains(b))
        {
            cout << 0 << endl;
            continue;
        }

        cout << count[a][b] << endl;
    }

    return 0;
}

Compilation message (stderr)

regions.cpp:8: warning: ignoring '#pragma region dalykai' [-Wunknown-pragmas]
    8 | #pragma region dalykai
      | 
regions.cpp:31: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas]
   31 | #pragma endregion
      | 
regions.cpp: In function 'int main()':
regions.cpp:119:23: error: '__gnu_cxx::__alloc_traits<std::allocator<std::map<int, int> >, std::map<int, int> >::value_type' {aka 'class std::map<int, int>'} has no member named 'contains'
  119 |         if (!count[a].contains(b))
      |                       ^~~~~~~~