Submission #1250879

#	Time	Username	Problem	Language	Result	Execution time	Memory
1250879		inksamurai	Souvenirs (IOI25_souvenirs)	C++20	4 / 100	0 ms	412 KiB

souvenirs

#include <bits/stdc++.h>
#include "souvenirs.h"
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define rng(i,c,n) for(int i=c;i<n;i++)
#define all(a) a.begin(),a.end()
#define sz(a) (int)a.size()
#define fi first
#define se second
#define vec vector
#define pb push_back
typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> pii;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}

typedef long double ld;

void buy_souvenirs(int N, long long P0){
	int n=N;
	ll p0=P0;
	p0--;

	if(n==2){
		transaction(p0);
		return;
	}

	vi cnt(n);
	rng(i,1,n){
		if(cnt[i]==i){
			continue;
		}
		
		auto [vs,left]=transaction(p0);
		
		vi usd(n);
		ll sum=p0+left;
		for(auto v:vs){
			usd[v]=1;
			cnt[v]+=1;
		}

		auto contains=[&](int pos)->bool{
			if(pos>=n or pos<0){
				return 0;
			}
			return usd[pos];
		};

		ld frac=0.7;
		// we will investigate i + 1
		if(!contains(i+1) and !contains(i+2) and !contains(i+3)){
			frac=0.7;
		}else if(contains(i+1) and !contains(i+2) and !contains(i+3)){
			frac=0.5;	
		}else if(!contains(i+1) and !contains(i+2) and contains(i+3)){
			frac=0.6;
		}else if(contains(i+1) and !contains(i+2) and contains(i+3)){
			frac=0.4;
		}else if(!contains(i+1) and contains(i+2) and !contains(i+3)){
			frac=0.5;
		}else if(!contains(i+1) and contains(i+2) and contains(i+3)){
			frac=0.5;
		}else if(contains(i+1) and contains(i+2) and !contains(i+3)){
			frac=0.4;
		}else if(contains(i+1) and contains(i+2) and contains(i+3)){
			frac=0.34;	
		}
		p0=(ll)(frac*sum);
	}
}

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