Submission #887341

#	Time	Username	Problem	Language	Result	Execution time	Memory
887341		hafo	Semiexpress (JOI17_semiexpress)	C++14	18 / 100	1 ms	604 KiB

semiexpress

#include <bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define pb push_back
#define pa pair<int, int>
#define pall pair<ll, int>
#define fi first
#define se second
#define TASK "test"
#define Size(x) (int) x.size()
#define all(x) x.begin(), x.end()
using namespace std;

template<typename T1, typename T2> bool mini (T1 &a, T2 b) {if(a > b) a = b; else return 0; return 1;}
template<typename T1, typename T2> bool maxi (T1 &a, T2 b) {if(a < b) a = b; else return 0; return 1;}

const int MOD = 1e9 + 7;
const int LOG = 20;
const int maxn = 2e5 + 7;
const ll oo = 1e18 + 69;

int n, m, k, a, b, c, s[maxn];
ll t;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    //freopen(TASK".inp", "r", stdin);
    //freopen(TASK".out", "w", stdout);

    cin>>n>>m>>k>>a>>b>>c>>t;
    for(int i = 1; i <= m; i++) cin>>s[i];

    k -= m;
    int ans = 0;
    vector<int> val;
    for(int i = 1; i <= m; i++) {
        ll time = 1LL * (s[i] - 1) * b; 
        if(time <= t && i != 1) ans++;

        if(time > t || i == m) break;
        
        ll cnt = 0;
        cnt += (t - time) / a;
        ll last = s[i] + cnt + 1;
        while(k > 0 && last < s[i + 1]) {
            time = 1LL * (s[i] - 1) * b + 1LL * c * (last - s[i]);
            if(time > t) break;
            last = last + (t - time) / a + 1;
            if(last > s[i + 1]) {
                last -= (t - time) / a + 1;
                val.pb(min(s[i + 1] - last, (t - time) / a + 1));
                break;
            }
            cnt += (t - time) / a + 1;
            k--;
        }

        mini(cnt, s[i + 1] - s[i] - 1);
        ans += cnt;
    }

    sort(all(val), greater<int> ());
    for(int i = 0; i < min(k, Size(val)); i++) ans += val[i];
    cout<<ans;
    return 0;
}

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