Submission #885521

#	Time	Username	Problem	Language	Result	Execution time	Memory
885521		vjudge1	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	7 ms	524 KiB

semiexpress

#include <bits/stdc++.h>
using namespace std;

#define endl '\n'
#define db double
#define ll __int128
#define int long long
#define pb push_back
#define fs first
#define sd second
#define Mod long(1e9 + 7)
#define all(x) x.begin(), x.end()
#define unvisited long(-1)
#define Eps double(1e-9)
#define _for(i, n) for(int i = 0; i < (n); i++)
#define dbg(x) cout << #x ": " << x << endl;

const int Max = 1e6 + 7, Inf = 1e15 + 7;

void print(bool x) { cout << (x ? "YES" : "NO") << endl; }

string tostring (__int128 x)
{
    string ans = "";
    while(x > 0)
    {
        ans += (x % 10 + '0');
        x /= 10;
    }
    reverse(all(ans));
    return ans;
}

void solve()
{
    int n, m, k; cin >> n >> m >> k; 
    int a, b, c; cin >> a >> b >> c; 
    int t; cin >> t; 

    vector <int> v(m), p(m);
    for(auto& u : v) cin >> u; 
   
    k -= m; v.push_back(n+1); 

    int ans = -1; 

    for(int i = 0; i < m; i++)
    {
        int x = (v[i] - 1) * b; 
        ans += min(max(0LL, (t - x) / a), v[i+1] - v[i] - 1);
        p[i] = v[i] + (t - x) / a + 1; 
        ans += (x <= t); 
    }

    for(int i = 0; i < k; i++)
    {
        pair <int, int> px = { 0, 0 }; 

        for(int j = 0; j < m; j++) if(p[j] < v[j+1])
        {
            int x = (v[j] - 1) * b + (p[j] - v[j]) * c; 
            
            int cont = min(max(0LL, (t - x) / a), v[j+1] - p[j] - 1) + long(x <= t);// cout << i << " "  << cont  << " " << p[j] << " " << v[j+1] << endl; ; 

            if(px.sd < cont)
            {
                px = { j, cont };
            }
        } 

        if(px.sd == 0) break;
 
        ans += px.sd; 
        p[px.fs] += px.sd;  
    }

    cout << ans << endl; 
}

int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int Q = 1; //cin >> Q;

    while (Q--)
    {
        solve();
    }

    return 0;
}

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