Submission #873291

#	Time	Username	Problem	Language	Result	Execution time	Memory
873291		Andreibatman	Stove (JOI18_stove)	C++14	100 / 100	58 ms	5956 KiB

stove

#include <bits/stdc++.h>
using namespace std;
long long n,k,i,v[100010],timp;
map<long long,long long>fr,fr2;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>k;
    for(i=1;i<=n;i++)
    {
        cin>>v[i];
        if(i>1)
            fr[-(v[i]-v[i-1])]++;
    }
    k--;
    for(auto it:fr)
    {
        if(k==0)
            break;
        if(it.first==-1)
            continue;
        fr2[it.first]+=min(k,it.second);
        k-=min(k,it.second);
    }
    timp=1;
    for(i=2;i<=n;i++)
    {
        if(v[i]-v[i-1]==1)
            timp++;
        else
        {
            if(!fr2[v[i-1]-v[i]])
                timp+=v[i]-v[i-1];
            else
            {
                fr2[v[i-1]-v[i]]--;
                timp++;
            }
        }
    }
    cout<<timp;
    return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50