Submission #113199

#	Time	Username	Problem	Language	Result	Execution time	Memory
113199		ansol4328	Bali Sculptures (APIO15_sculpture)	C++11	100 / 100	91 ms	768 KiB

sculpture

#include<stdio.h>
#include<algorithm>

using namespace std;
typedef long long ll;

int n, a, b;
ll m[2005], s[2005];
int dp[2005][2005];
const int INF=1e9;

int main()
{
    scanf("%d %d %d",&n,&a,&b);
    for(int i=1 ; i<=n ; i++)
    {
        scanf("%lld",&m[i]);
        s[i]=s[i-1]+m[i];
    }
    ll res=1, idx=1;
    while(res<s[n]) idx<<=1, (res<<=1)+=1;
    if(a==1)
    {
        while(idx!=0)
        {
            for(int i=1 ; i<=n ; i++) dp[1][i]=INF;
            (res&=~idx);
            for(int i=1 ; i<=n ; i++)
            {
                for(int j=i-1 ; j>=0 ; j--)
                {
                    if((res|(s[i]-s[j]))==res) dp[1][i]=min(dp[1][i],dp[1][j]+1);
                }
            }
            if(dp[1][n]>b) res|=idx;
            idx>>=1;
        }
    }
    else
    {
        while(idx!=0)
        {
            bool tf=false;
            (res&=~idx);
            for(int i=1 ; i<=n ; i++)
            {
                dp[1][i]=INF;
                if((s[i]|res)==res) dp[1][i]=1;
            }
            for(int k=2 ; k<=b ; k++)
            {
                for(int i=k ; i<=n ; i++)
                {
                    dp[k][i]=INF;
                    for(int j=i-1 ; j>=k-1 ; j--)
                    {
                        if((res|(s[i]-s[j]))==res && dp[k-1][j]==k-1) dp[k][i]=k;
                    }
                }
                if(k>=a && dp[k][n]!=INF)
                {
                    tf=true;
                    break;
                }
            }
            if(!tf) res|=idx;
            idx>>=1;
        }
    }
    printf("%lld",res);
    return 0;
}

Compilation message (stderr)

sculpture.cpp: In function 'int main()':
sculpture.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d",&n,&a,&b);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~
sculpture.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&m[i]);
         ~~~~~^~~~~~~~~~~~~~

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