Submission #882841

#	Time	Username	Problem	Language	Result	Execution time	Memory
882841		presko	Bigger segments (IZhO19_segments)	C++14	0 / 100	1 ms	432 KiB

segments

#include<iostream>
#include<bits/stdc++.h>
#define MAXN 500010
using namespace std;
long long a[MAXN];
vector<pair<long long,int>> order;
void try_order(int curr, int last, int n)
{
    int now=order.size()-1;
    for(int i=now;i>=0;i--)
    {
        //if(last-order[i].second==1)break;
        bool fl=1;
        int be=order[i].second;
        for(int j=be;j<last;j++)
        {
            if(order[i].first<=curr)break;
            if(order[i].second==last-1)return;
            order[i].first-=a[j];
            order[i-1].first+=a[j];
            order[i].second++;
            fl=0;
        }
        last=order[i].second;
        curr=order[i].first;
        if(fl){order.push_back({n,n});return;}
    }
}
int main()
{
    int n;
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
    }
    order.push_back({a[1],1});
    long long last=a[1],curr=0,st=2;
    for(int i=2;i<=n;i++)//could be combined with input
    {
        curr+=a[i];
        if(curr>=last)
        {
            order.push_back({curr,st});
            last=curr;
            curr=0;
            st=i+1;
        }
    }
    if(curr)try_order(curr,st,n);
    cout<<order.size()<<"\n";
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27