Submission #931158

#	Time	Username	Problem	Language	Result	Execution time	Memory
931158		De3b0o	Semiexpress (JOI17_semiexpress)	C++14	48 / 100	1 ms	348 KiB

semiexpress

#include<bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define in insert
#define er erase
#define pb push_back
#define ppb pop_back()
#define ph push
#define pp pop()
#define d3 ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define cans cout << ans << "\n";
#define yes cout << "YES" << "\n";
#define no cout << "NO" << "\n";
#define pll pair<ll,ll>
#define lin cout << "\n";
#define sqr 340
#define mod 1000000007
#define mid (l+r)/2

using namespace std;

int main()
{
    d3
    ll n , m , k;
    cin >> n >> m >> k;
    ll a , b , c;
    cin >> a >> b >> c;
    ll t;
    cin >> t;
    ll exp[m];
    for(int i = 0 ; m>i ; i++)
        cin >> exp[i];
    ll ans = 0;
    multiset<ll> semi;
    ll y = 3*(k-m);
    for(int i = 0 ; m-1>i ; i++)
    {
        if((exp[i]-1)*b>t)
            break;
        ll l = exp[i]+1;
        ll r = exp[i+1]-1;
        while(l<=r)
        {
            if((mid-exp[i])*a+(exp[i]-1)*b>t)
                r=mid-1;
            else
                l=mid+1;
        }
        ans+=(l-1-exp[i]+1);
        ll x = l;
        while(x<exp[i+1]&&y)
        {
            l = x;
            r = exp[i+1]-1;
            while(l<=r)
            {
                if((exp[i]-1)*b + (x-exp[i])*c + (mid-x)*a >t)
                    r=mid-1;
                else
                    l=mid+1;
            }
            if(l-1==x-1)
                break;
            y--;
            semi.in(l-1-x+1);
            x=l;
        }
    }
    ll x = k-m;
    while(x--&&!semi.empty())
    {
        auto it = semi.end();
        it--;
        //cout << *it << "\n";
        ans+=*it;
        semi.erase(it);
    }
    if((n-1)*b<=t)
        ans++;
    ans--;
    cans
}

• Subtask 1: 18 / 18
• Subtask 2: 30 / 30
• Subtask 3: 0 / 52