Submission #1039304

#	Time	Username	Problem	Language	Result	Execution time	Memory
1039304		DucNguyen2007	Snowball (JOI21_ho_t2)	C++14	33 / 100	2549 ms	8644 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define se second
const int maxN=2e5+5;
const ll inf=2e18;
int n,q;
pll b[maxN+1];
ll x[maxN+1],a[maxN+1],w[maxN+1],l[maxN+1],r[maxN+1];
int main()
{
    //freopen("","r",stdin);
    //freopen("","w",stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>q;
    for(int i=1;i<=n;i++)
    {
        cin>>x[i];
    }
    for(int i=1;i<=q;i++)
    {
        cin>>w[i];
    }
    ll val=0;
    for(int j=1;j<=q;j++)
    {
        val+=w[j];
        for(int i=1;i<=n;i++)
        {
            l[i]=max(l[i],val);
            r[i]=max(r[i],-val);
        }
        //cout<<j<<'\n';
        for(int i=1;i<n;i++)
        {
            ll tmp=x[i+1]-x[i];
            //cout<<i<<" "<<tmp<<" "<<l[i]<<" "<<r[i+1]<<'\n';
            if(l[i]+r[i+1]<=tmp)
            {
                b[i].fi=l[i];
                b[i].se=r[i+1];
            }
            else
            {
                ll pre_l=b[i].fi,pre_r=b[i].se;
                ll cur=tmp-pre_l-pre_r;
                if(val>0)
                {
                    b[i].fi+=cur;
                }
                else b[i].se+=cur;
            }
        }
    }
    //cout<<b[1].fi<<'\n';
    for(int i=1;i<=n;i++)
    {
        if(i<n)
        {
            a[i]+=b[i].fi;
            a[i+1]+=b[i].se;
        }
        if(i==1)
        {
            a[i]+=r[i];
        }
        if(i==n)
        {
            a[i]+=l[i];
        }
        cout<<a[i]<<'\n';
    }
}

• Subtask 1: 33 / 33
• Subtask 2: 0 / 67