Submission #1024503

#	Time	Username	Problem	Language	Result	Execution time	Memory
1024503		Ice_man	Regions (IOI09_regions)	C++14	25 / 100	8074 ms	131072 KiB

regions

/**
 ____    ____    ____    __________________    ____    ____    ____
||I ||  ||c ||  ||e ||  ||                ||  ||M ||  ||a ||  ||n ||
||__||  ||__||  ||__||  ||________________||  ||__||  ||__||  ||__||
|/__\|  |/__\|  |/__\|  |/________________\|  |/__\|  |/__\|  |/__\|

*/

#include <iostream>
#include <chrono>
#include <vector>
#include <algorithm>
#include <cmath>
#include <map>


#define maxn 200005
#define maxr 20005
#define maxlog 20
#define INF 1000000010
#define LINF 1000000000000000005
#define endl '\n'
#define pb(x) push_back(x)
#define X first
#define Y second
#define control cout<<"passed"<<endl;

using namespace std;


typedef long long ll;
typedef pair <ll , ll> pll;
typedef pair <int , int> pii;
typedef long double ld;
typedef unsigned long long ull;




map <int , int> br[maxn];
int n , r , q;
vector <int> v[maxn];
int color[maxn];

vector <int> c[maxr];
int ans[maxr][maxr];

void dfs(int node , int par , int col)
{
    ans[col][color[node]]++;
    for(auto& nb : v[node])
    {
        if(nb == par)
            continue;
        dfs(nb , node , col);
    }
}



int par[maxn];
void read()
{
    cin >> n >> r >> q;

    for(int i = 1; i <= n; i++)
    {
        if(i == 1)
        {
            cin >> color[i];
            c[color[i]].pb(i);
            continue;
        }

        int x;
        cin >> par[i] >> color[i];
        c[color[i]].pb(i);

        v[par[i]].pb(i);
        v[i].pb(par[i]);
    }

    for(int i = 1; i <= n; i++)
        dfs(i , par[i] , color[i]);

    while(q--)
    {
        int x , y;
        cin >> x >> y;
        cout << ans[x][y] << endl;
        cout.flush();
    }
}










int main()
{

/**#ifdef ONLINE_JUDGE
    freopen("input.in", "r", stdin);
    freopen("output.out", "w", stdout);
#endif*/

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    ///startT = std::chrono::high_resolution_clock::now();

    read();


    return 0;
}

Compilation message (stderr)

regions.cpp: In function 'void read()':
regions.cpp:75:13: warning: unused variable 'x' [-Wunused-variable]
   75 |         int x;
      |             ^

• Subtask 1: 15 / 15
• Subtask 2: 10 / 85