Submission #106938

#	Time	Username	Problem	Language	Result	Execution time	Memory
106938		nxteru	Bali Sculptures (APIO15_sculpture)	C++14	100 / 100	84 ms	512 KiB

sculpture

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef double D;
typedef pair<ll,ll> P;
#define M 1000000007
#define F first
#define S second
#define PB push_back
#define INF 1000000000000000000
int n,a,b;
ll y[2005],ans=(1LL<<41LL)-1;
bool check(void){
	if(a==1){
		int dp[2005];
		for(int i=0;i<=n;i++)dp[i]=n+1;
		dp[0]=0;
		for(int i=0;i<n;i++){
			ll s=0;
			for(int j=i+1;j<=n;j++){
				s+=y[j];
				if((ans|s)==ans)dp[j]=min(dp[j],dp[i]+1);
			}
		}
		return dp[n]<=b;
	}else{
		bool dp[105][105];
		for(int i=0;i<=n;i++)for(int j=0;j<=n;j++)dp[i][j]=false;
		dp[0][0]=true;
		for(int i=0;i<n;i++){
			for(int j=0;j<n;j++){
				if(!dp[i][j])continue;
				ll s=0;
				for(int k=i+1;k<=n;k++){
					s+=y[k];
					if((ans|s)==ans)dp[k][j+1]=true;
				}
			}
		}
		bool res=false;
		for(int i=a;i<=b;i++)res|=dp[n][i];
		return res;
	}
}
int main(void){
	scanf("%d%d%d",&n,&a,&b);
	for(int i=1;i<=n;i++)scanf("%lld",y+i);
	for(ll i=40;i>=0;i--){
		ans^=(1LL<<i);
		if(!check())ans^=(1LL<<i);
	}
	printf("%lld\n",ans);
}

Compilation message (stderr)

sculpture.cpp: In function 'int main()':
sculpture.cpp:46:7: 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:47:28: 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("%lld",y+i);
                       ~~~~~^~~~~~~~~~~~

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