Submission #1198966

#	Time	Username	Problem	Language	Result	Execution time	Memory
1198966		Warinchai	Bali Sculptures (APIO15_sculpture)	C++20	100 / 100	55 ms	528 KiB

sculpture

#include<bits/stdc++.h>
#define int long long
using namespace std;
int ar[2005];
int mn[2005];
int inf=1e18;
int can[105][105];
int psum[2005];
int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n,a,b;cin>>n>>a>>b;
    for(int i=1;i<=n;i++)cin>>ar[i],psum[i]=ar[i]+psum[i-1];
    if(a==1){
        int val=0;
        for(int i=40;i>=0;i--){
            for(int i=1;i<=n;i++)mn[i]=inf;
            for(int j=1;j<=n;j++){
                int sum=0;
                for(int k=j;k<=n;k++){
                    sum+=ar[k];
                    if((sum&(~val))<(1LL<<i))mn[k]=min(mn[k],mn[j-1]+1);
                }
            }
            if(mn[n]>b)val=val|(1LL<<i);
        }
        cout<<val;
    }else{
        int val=0;
        for(int i=40;i>=0;i--){
            for(int i=1;i<=n;i++)for(int j=1;j<=n;j++)can[i][j]=0;
            can[0][0]=1;
            for(int j=1;j<=n;j++){
                for(int k=1;k<=j;k++){
                    int sum=psum[j]-psum[k-1];
                    for(int l=1;l<=b;l++){
                        if((sum&(~val))<(1LL<<i))can[j][l]|=can[k-1][l-1];
                    }
                }
            }
            int rcan=0;
            for(int i=a;i<=b;i++)rcan|=can[n][i];
            if(!rcan)val=val|(1LL<<i);
        }
        cout<<val;
    }
}

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