Submission #1082787

#	Time	Username	Problem	Language	Result	Execution time	Memory
1082787		steveonalex	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	10 ms	2520 KiB

semiexpress

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
#define block_of_code if(true)
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll gcd(ll a, ll b){return __gcd(a, b);}
ll lcm(ll a, ll b){return a / gcd(a, b) * b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
double rngesus_d(double l, double r){
    double cur = rngesus(0, MASK(60) - 1);
    cur /= MASK(60) - 1;
    return l + cur * (r - l);
}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

int n, m, k; 
ll a, b, c;
ll t;

int main(void){
    ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);
    clock_t start = clock();

    cin >> n >> m >> k;
    cin >> a >> b >> c;
    cin >> t;

    vector<int> s(m);
    for(int i = 0; i<m; ++i) cin >> s[i];
    s.push_back(s.back() + 1);

    k -= m;
    int ans = 0;
    vector<int> gained;
    for(int i = 1; i<=m; ++i){
        ll start_t = 1LL * (s[i-1] - 1) * b;
        if (start_t > t) break;
        ll cur = min(s[i] - s[i-1], (t - start_t) / a + 1);
        ans += cur;

        int cnt = 0;
        while(cnt < k && cur < s[i] - s[i-1]){
            ll cur_t = start_t + cur * c;
            if (cur_t > t) break;
            ll tmp = (t - cur_t) / a + 1;
            minimize(tmp, s[i] - s[i-1] - cur);
            gained.push_back(tmp);
            cur += tmp;
            cnt++;
        }
    }
    sort(ALL(gained), greater<int>());
    for(int i = 0; i<min(k, gained.size()); ++i) ans += gained[i];
    cout << ans - 1 << "\n";


    cerr << "Time elapsed: " << clock() - start << " ms\n";
    return 0;
}

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