Submission #1250131

#	Time	Username	Problem	Language	Result	Execution time	Memory
1250131		zzzzzzzzzzzzzzz	Souvenirs (IOI25_souvenirs)	C++20	100 / 100	12 ms	412 KiB

souvenirs

#include "souvenirs.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int n, e;
vector<ll> ansli, cnt;

int solve(ll ans){ //end: 어디까지 아는가?
    auto res = transaction(ans);
    vector<int> v=res.first;
    for(int j:v) cnt[j]++;
    ll cost=ans-res.second;
    while(v[0]<e){
        while(e<=v.back()){
            cost-=ansli[v.back()];
            v.pop_back();
        }
        if(v[0]==e-1) break;
        e=solve((cost-1)/v.size());
    }
    ansli[v[0]]=cost;
    return v[0];
}

void buy_souvenirs(int N, ll P0) {
    n=N;
    e=n;
    ansli.resize(n);
    cnt.resize(n);
    solve(P0-1);
    for(int i=1;i<n;i++){
        while(cnt[i]<i){
            transaction(ansli[i]);
            cnt[i]++;
        }
    }
    return;
}

• Subtask 0: 0 / 0
• Subtask 1: 4 / 4
• Subtask 2: 3 / 3
• Subtask 3: 14 / 14
• Subtask 4: 18 / 18
• Subtask 5: 28 / 28
• Subtask 6: 33 / 33