Submission #100111

#	Time	Username	Problem	Language	Result	Execution time	Memory
100111		TadijaSebez	Bali Sculptures (APIO15_sculpture)	C++11	100 / 100	201 ms	512 KiB

sculpture

#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N=2050;
const int M=205;
int a[N];
bitset<M> dp[M];
ll sum[N];
ll mn[N];
int main()
{
	int n,A,B;
	scanf("%i %i %i",&n,&A,&B);
	for(int i=1;i<=n;i++) scanf("%i",&a[i]),sum[i]=sum[i-1]+a[i];
	ll ans=0;
	for(int l=50;~l;l--)
	{
		if(A!=1)
		{
			for(int i=0;i<=n;i++) dp[i]=0;
			dp[0][0]=1;
			for(int i=1;i<=n;i++)
			{
				for(int j=i-1;j>=0;j--)
				{
					ll val=sum[i]-sum[j];
					if(((val>>(l+1))|ans)==ans && !((val>>l)&1))
					{
						dp[i]|=dp[j]<<1;
					}
				}
			}
			bool ok=0;
			for(int i=A;i<=B;i++) ok|=dp[n][i];
			ans*=2;
			if(!ok) ans++;
		}
		else
		{
			for(int i=0;i<=n;i++) mn[i]=N;
			mn[0]=0;
			for(int i=1;i<=n;i++)
			{
				for(int j=i-1;j>=0;j--)
				{
					ll val=sum[i]-sum[j];
					if(((val>>(l+1))|ans)==ans && !((val>>l)&1))
					{
						mn[i]=min(mn[i],mn[j]+1);
					}
				}
			}
			ans*=2;
			if(mn[n]>B) ans++;
		}
	}
	printf("%lld\n",ans);
	return 0;
}

Compilation message (stderr)

sculpture.cpp: In function 'int main()':
sculpture.cpp:13:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i %i",&n,&A,&B);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:14:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;i++) scanf("%i",&a[i]),sum[i]=sum[i-1]+a[i];
                        ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 21 / 21
• Subtask 4: 25 / 25
• Subtask 5: 29 / 29