제출 #434522

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
434522		arayi	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	46 ms	21404 KiB

biscuits

#include "biscuits.h"
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
#define ad push_back
#define lli long long


lli dp[120][20010];
long long count_tastiness(long long x, std::vector<long long> a) 
{
	for (int i = 0; i < 60; i++) a.ad(0);
	for (int i = 0; i < a.size(); i++)
		for (int j = 0; j <= 2*x; j++) dp[i][j]=0;
	for (int i = 0; i < a.size() - 1; i++)
	{
		a[i+1] += max(0LL, (a[i]-x)/2LL);
		a[i] = min(a[i], x);
	}
	//for(auto p : a) cout << p << " "; cout << endl;
	dp[0][a[0]]=1;
	if(a[0]==x) dp[0][0]=1;
	for (int i = 1; i < a.size(); i++)
	{
		for (int j = 0; j <= 2*x; j++)
		{
			if(dp[i-1][j]==0) continue;
			int sm = j/2;
			dp[i][sm+a[i]] += dp[i-1][j];
			if(sm + a[i] >= x) dp[i][sm+a[i]-x] += dp[i-1][j];
		}
	}
	lli ret = 0;
	for (int i = 0; i <= 2*x; i++)
		ret += dp[a.size()-1][i];
	return ret;
}

컴파일 시 표준 에러 (stderr) 메시지

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for (int i = 0; i < a.size(); i++)
      |                  ~~^~~~~~~~~~
biscuits.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for (int i = 0; i < a.size() - 1; i++)
      |                  ~~^~~~~~~~~~~~~~
biscuits.cpp:24:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |  for (int i = 1; i < a.size(); i++)
      |                  ~~^~~~~~~~~~

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