제출 #329253

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
329253		nikatamliani	비스킷 담기 (IOI20_biscuits)	C++14	12 / 100	13 ms	1260 KiB

biscuits

#include <bits/stdc++.h>
#include "biscuits.h"
using namespace std;
using ll = long long;
ll count_tastiness(ll x, vector<ll> a) {
	ll ans = 1;
	for(int i = 0; i < (int)a.size() - 1; ++i) {
		ll mod = a[i] % x;
		a[i+1] += mod / 2;
		a[i] /= x;
		ll sub = (a[i] - 1) / 2 * 2;
		a[i+1] += sub / 2 * x;
		a[i] -= sub;
	}
	while(true) {
		ll mod = a.back() % x;
		ll next = mod / 2;
		a.back() /= x;
		ll sub = (a.back() - 1) / 2 * 2;
		next += sub / 2 * x;
		a.back() -= sub;
		if(!next) break; 
		a.push_back(next);
	}
	a.insert(a.begin(), 0);
	int n = a.size();
	vector<vector<ll>> dp(n+1, vector<ll>(2, 0));
	dp[0][0] = 1; 
	for(int i = 0; i < n; ++i) {
		bool added[2][2];
		memset(added, 0, sizeof added);
		for(int me = 0; me < 2; ++me) {
			for(int take = 0; take <= a[i]; ++take) {
				int new_me = take + me;
				int new_he = new_me / 2;
				new_me -= new_he * 2;
				if(added[new_me][new_he]) continue;
				added[new_me][new_he] = 1;
				dp[i+1][new_he] += dp[i][me];
			}
		}
	}
	return dp[n][0] + dp[n][1];
}

컴파일 시 표준 에러 (stderr) 메시지

biscuits.cpp: In function 'll count_tastiness(ll, std::vector<long long int>)':
biscuits.cpp:6:5: warning: unused variable 'ans' [-Wunused-variable]
    6 |  ll ans = 1;
      |     ^~~

• Subtask 1: 0 / 9
• Subtask 2: 12 / 12
• Subtask 3: 0 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23