제출 #461162

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
461162		vanic	Ice Hockey World Championship (CEOI15_bobek)	C++14	70 / 100	1096 ms	7424 KiB

bobek

#include <iostream>
#include <cstdio>
#include <cmath>
#include <algorithm>
#include <vector>

using namespace std;

typedef long long ll;

const int maxn=45;

ll a[maxn];
ll pref[maxn];
ll sol;

void rijesi(int x, ll sum){
	if(sum<0){
		return;
	}
	if(sum>=pref[x+1]){
		sol+=(1ll<<(x+1));
		return;
	}
	sol++;
	for(int i=x; i>-1; i--){
		rijesi(i-1, sum-a[i]);
	}
}

const int maxm=1e6+5;

ll dp[maxm];
int n;
ll m;

void rokaj(){
	dp[0]=1;
	for(int i=0; i<n; i++){
		for(int j=m; j>=a[i]; j--){
			dp[j]+=dp[j-a[i]];
		}
	}
	for(int i=0; i<=m; i++){
		sol+=dp[i];
	}
}

int main(){
	scanf("%d%lld", &n, &m);
	for(int i=0; i<n; i++){
		scanf("%lld", a+i);
	}
	sort(a, a+n);
	for(int i=0; i<n; i++){
		pref[i+1]=pref[i]+a[i];
	}
	if(m<=1e6){
		rokaj();
	}
	else{
		rijesi(n-1, m);
	}
	printf("%lld\n", sol);
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

bobek.cpp: In function 'int main()':
bobek.cpp:50:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |  scanf("%d%lld", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~~~
bobek.cpp:52:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |   scanf("%lld", a+i);
      |   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10