Submission #715560

#	Time	Username	Problem	Language	Result	Execution time	Memory
715560		cbup	Rice Hub (IOI11_ricehub)	C++14	17 / 100	462 ms	262144 KiB

ricehub

#include<bits/stdc++.h>
using namespace std;

long long besthub(int n,int l,int x[],long long b){
    long long cost,ans=0;
    int mid;
    vector<long long> prefixSum(l,0);

    for(int i=1;i<=n;i++)prefixSum[i] = prefixSum[i-1]+x[i-1];
    //for(int i=1;i<=n;i++)cout<<prefixSum[i]<<" "; cout<<endl;
    for(int st=0;st<n;st++){
        for(int en=st;en<n;en++){
            mid = (st+en)/2;
            cost = (mid-st)*x[mid]-(prefixSum[mid]-prefixSum[st]) + (prefixSum[en+1]-prefixSum[mid+1])-(en-mid)*x[mid];

            if(cost <= b)ans = max(ans,en-st+1LL);
            //cout<<st<<" "<<en<<" "<<cost<<endl;
        }
    }
    return ans;


}

• Subtask 1: 17 / 17
• Subtask 2: 0 / 25
• Subtask 3: 0 / 26
• Subtask 4: 0 / 32