제출 #370386

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
370386		jainbot27	Kralj (COCI16_kralj)	C++17	140 / 140	788 ms	43364 KiB

kralj

#include <bits/stdc++.h>
using namespace std;

#define FOR(x, y, z) for(int x = (y); x < (z); x++)
#define F0R(x, z) FOR(x, 0, z)

const int mxN = 5e5+10;

int n;
int a[mxN];
int st[mxN];
int par[mxN];
vector<int> v[mxN];
int nums[mxN];
int ans = 0;

int p(int q){
    if(par[q]==q) return par[q];
    return par[q]=p(par[q]);
}

void comb(int e1, int e2){
    e1 = p(e1); e2 = p(e2);
    par[e2] = e1;
}

int32_t main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n;
    F0R(i, n){
        par[i] = i;
        cin >> a[i]; a[i]--;
    }
    F0R(i, n){
        cin >> st[i];
    }
    F0R(i, n){
        int x; cin >> x;
        v[a[i]].push_back(x);
    }
    int q = 0;
    F0R(i, 2*n){
        bool good = 1;
        if(q>0){
            comb((i-1)%n, i%n);
            q--;
            good = 0;
        }
        q += max((int)v[i%n].size()-good,0);
    }
    F0R(i, n){
        nums[par[i]]++;
    }
    F0R(i, n){
        set<int> al;
        FOR(j, i, i+nums[i]){
            for(auto&x:v[j%n]){
                al.insert(x);
            }
            auto it = al.lower_bound(st[j%n]);
            if(it==al.end()) al.erase(al.begin());
            else{
                ans++;
                al.erase(it);
            }
        }
    }
    cout << ans << "\n";
    return 0;
}

• Subtask 1: 140 / 140