Submission #746909

#	Time	Username	Problem	Language	Result	Execution time	Memory
746909		Denkata	Bigger segments (IZhO19_segments)	C++14	0 / 100	1 ms	340 KiB

segments

#include<bits/stdc++.h>
using namespace std;
const int maxn = 5e5+3;
int i,j,p,q,n,m,k;
int uk,dp[maxn],cnt[maxn],a[maxn],sum;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cin>>a[i];
    }
    uk = 1;
    dp[1] = a[1];
    cnt[1] = 1;
    sum = a[1];
    for(i=2;i<=n;i++)
    {
        sum+=a[i];
        while(uk<i && sum>=dp[uk-1])
        {
            sum-=a[uk];
            uk++;
        }
        if(sum<dp[uk-1])
        {
            uk--;
            sum+=a[uk];
        }
        dp[i] = sum;
        cnt[i] = cnt[uk-1]+1;
        //cout<<dp[i]<<" "<<cnt[i]<<endl;
    }
    cout<<cnt[n]<<endl;
    return 0;
}

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