Submission #443771

#	Time	Username	Problem	Language	Result	Execution time	Memory
443771		impri	Bali Sculptures (APIO15_sculpture)	C++14	100 / 100	221 ms	16244 KiB

sculpture

#include<bits/stdc++.h>
using namespace std;
int n,a,b;
int arr[2001];
int dp[2002][2011];
int place;
long long res=0;
int get(int cur,int r){
    if(cur==n+1){
        if(a<=r && r<=b)return 1;
        return 0;
    }
if(dp[cur][r]!=-1)return dp[cur][r];
long long sum=0;
int ok=0;
for(int i=cur;i<=n;i++){
    sum+=arr[i];
    if((res >> (place+1))==((res|sum) >> (place+1))){
        if((sum & (1LL << place))==0)
        ok=max(ok,get(i+1,r+1));
    }

}
return dp[cur][r]=ok;
}
int get2(int cur){
if(cur==n+1)return 0;
if(dp[cur][0]!=-1)return dp[cur][0];
long long sum=0;
int r=100000;
for(int i=cur;i<=n;i++){
    sum+=arr[i];
    if((res >> (place+1))==((res|sum) >> (place+1))){
        if((sum & (1LL << place))==0)
        r=min(r,1+get2(i+1));
    }

}
return dp[cur][0]=r;
}
int main(void){
  cin.tie(0);
  ios_base::sync_with_stdio(false);
cin >>n >> a >> b;
for(int i=1;i<=n;i++)
    cin >> arr[i];
if(a>1){
for(place=40;place>=0;place--){
    memset(dp,-1,sizeof(dp));
    if(!get(1,0)){
        res+=(1LL << place);
    }

}
cout << res;
}
else{
    for(place=40;place>=0;place--){
    memset(dp,-1,sizeof(dp));
    if(get2(1)>b){
        res+=(1LL << place);
    }


}
cout << res;
}
}

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