Submission #41697

#	Time	Username	Problem	Language	Result	Execution time	Memory
41697		Hassoony	Bali Sculptures (APIO15_sculpture)	C++14	100 / 100	172 ms	1152 KiB

sculpture

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef double D;
const ll inf=(1ll<<61);
const int MX=2009;
ll n,A,B;
ll a[MX],dp[MX],ans,sum1,dp1[109][109];
ll DP(ll x){
    if(x==n)return 0;
    ll &ret=dp[x];if(ret!=-1)return ret;
    ret=inf;
    ll sum=0;
    for(int i=x;i<n;i++){
        sum+=a[i];
        if((sum&sum1)==0){
            ret=min(ret,DP(i+1)+1);
        }
    }
    return ret;
}
ll DP1(ll x,ll y){
    if(y>B)return 0;
    if(x==n)return (y>=A);
    ll &ret=dp1[x][y];if(ret!=-1)return ret;
    ret=0;
    ll sum=0;
    for(int i=x;i<n;i++){
        sum+=a[i];
        if((sum&sum1)==0){
            ret=max(ret,DP1(i+1,y+1));
        }
    }
    return ret;
}
int main(){
    cin>>n>>A>>B;
    for(int i=0;i<n;i++)scanf("%lld",&a[i]);
    if(A==1){
        for(ll i=48;i>=0;i--){
            memset(dp,-1,sizeof(dp));
            sum1+=(1ll<<i);
            if(DP(0)<=B)continue;
            ans+=(1ll<<i);
            sum1-=(1ll<<i);
        }
        cout<<ans<<endl;
        return 0;
    }
    for(ll i=48;i>=0;i--){
        sum1+=(1ll<<i);
        memset(dp1,-1,sizeof(dp1));
        if(DP1(0,0)!=0)continue;
        ans+=(1ll<<i);
        sum1-=(1ll<<i);
    }
    cout<<ans<<endl;
}

Compilation message (stderr)

sculpture.cpp: In function 'int main()':
sculpture.cpp:38:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=0;i<n;i++)scanf("%lld",&a[i]);
                                            ^

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