Submission #718841

#	Time	Username	Problem	Language	Result	Execution time	Memory
718841		Ahmed57	Lightning Conductor (POI11_pio)	C++14	100 / 100	356 ms	13244 KiB

pio

#include <bits/stdc++.h>

using namespace std;
#define int long long
long long dp[500001];
long long arr[500001];
void dc(int l,int r,int optl,int optr){
    if(l>r)return ;
    int mid = (l+r)/2;
    long long best = optl;
    for(int cut = optl;cut<=min(mid,optr);cut++){
        if(arr[best]+sqrt(abs(mid-best))<arr[cut]+sqrt(abs(mid-cut))){
            best = cut;
        }
    }
    int val = sqrt(abs(mid-best));
    double dd = sqrt((double)abs(mid-best));
    if(val!=dd)val++;
    dp[mid]=max(dp[mid],arr[best]+val-arr[mid]);
    int opt = best;
    dc(l,mid-1,optl,opt);
    dc(mid+1,r,opt,optr);
}
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    for(int i = 1;i<=n;i++){
        cin>>arr[i];
    }
    for(int i = 0;i<=n;i++)dp[i] = 0;
    dc(1,n,1,n);
    reverse(arr+1,arr+n+1);
    reverse(dp+1,dp+n+1);
    dc(1,n,1,n);
    reverse(dp+1,dp+n+1);
    reverse(arr+1,arr+n+1);
    for(int i = 1;i<=n;i++){
        cout<<dp[i]<<"\n";
    }
}

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 9 / 9
• Subtask 8: 9 / 9
• Subtask 9: 9 / 9
• Subtask 10: 9 / 9
• Subtask 11: 10 / 10