제출 #156122

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
156122		Nnandi	Regions (IOI09_regions)	C++14	30 / 100	1511 ms	32888 KiB

regions

#include <bits/stdc++.h>
#define ll long long
#define ft(n,i) for (ll i=0;i<n;i++)
#define tft(n,l,i) for (ll i=l;i<n;i++)
#define vi vector<ll>

using namespace std;
vi h,s;
vector<vi > graph;
ll to[510][510], most[510];
void bej(ll x)
{
    most[h[x]]++;
    ft (510,i) to[i][h[x]]+=most[i];
    for (ll f: graph[x])
    {
        bej(f);
    }

    most[h[x]]--;
}
int main()
{
ios::sync_with_stdio(0);
ll n,r,q; cin>>n>>r>>q; h.assign(n+1,0); s.assign(n+1,0);
graph.assign(n+1,vi());
cin>>h[1];
tft(n+1,2,i)
{
    cin>>s[i]>>h[i];
    graph[s[i]].push_back(i);
}
bej(1);
ft (q,i)
{
    ll a,b; cin>>a>>b; cout<<to[a][b]<<endl;
}

    return 0;
}

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