Submission #1285554

#	Time	Username	Problem	Language	Result	Execution time	Memory
1285554		SmuggingSpun	Souvenirs (IOI25_souvenirs)	C++20	100 / 100	15 ms	408 KiB

souvenirs

#include "souvenirs.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int lim = 105;
int n, cnt[lim];
ll cost[lim];
void MyLinh(ll money){
	vector<int>item;
	ll remain;
	tie(item, remain) = transaction(money);
	for(int& i : item){
		cnt[i]++;
	}
	while(item.size() > 1){
		if(cost[item.back()] != -1){
			remain += cost[item.back()];
			item.pop_back();
		}
		else{
			MyLinh((money - remain) / item.size());
		}
	}
	cost[item[0]] = money - remain;
	if(item[0] != n - 1 && cost[item[0] + 1] == -1){
		MyLinh(cost[item[0]] - 1);
	}
}
void buy_souvenirs(int N, ll p0){
	if((n = N) == 2){
		transaction(p0 - 1);
		return;
	}
	if(n == 3){
		vector<int>item;
		ll remain;
		tie(item, remain) = transaction(p0 - 1);
		if(item.size() == 1){
			transaction(p0 - remain - 2);
			transaction(p0 - remain - 2);
		}
		else{
			transaction((p0 - 1 - remain) >> 1LL);
		}
		return;
	}
	memset(cnt, 0, sizeof(cnt));
	memset(cost, -1, sizeof(cost));
	MyLinh((cost[0] = p0) - 1);
	for(int i = 1; i < n; i++){
		for(int j = i; j > cnt[i]; j--){
			transaction(cost[i]);
		}
	}
}

• 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