Submission #1277700

#	Time	Username	Problem	Language	Result	Execution time	Memory
1277700		Bui_Quoc_Cuong	Semiexpress (JOI17_semiexpress)	C++20	100 / 100	6 ms	2496 KiB

semiexpress

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

typedef long long ll;
typedef pair<int, int> ii;
typedef pair<int, ii> iii;

template<class T>
    bool minimize(T &a, const T &b) {
        if (a > b) return a = b, true;
        return false;
    }

template<class T>
    bool maximize(T &a, const T &b) {
        if (a < b) return a = b, true;
        return false;
    }

#define FOR(i,a,b) for(int i=(a); i<=(int)(b); ++i)
#define FORD(i,a,b) for(int i=(a); i>=(int)(b); --i)
#define MASK(i) (1LL << (i))
#define BIT(S, i) (((S) >> (i)) & 1)
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define all(x) x.begin(), x.end()

const int MOD = 1e9 + 7;
const int oo = 1e9 + 29032008;
const ll INF = 1e18 + 29032008;
const int N = 2e5 + 5;

int n, m, k, A, B, C;
long long TimeLimit;
int s[N];

void init(void) {
    cin >> n >> m >> k >> A >> B >> C >> TimeLimit;
    FOR(i, 1, m) cin >> s[i];
}

void process(void) {
    ll ans = - 1 + (1LL * (n - 1) * B <= TimeLimit);
    priority_queue <int> pq;
    k-= m;
    FOR(i, 1, m - 1) {
        int curPos = s[i], curCnt = 0;
        while (curPos < s[i + 1]) {
            long long rem = TimeLimit - 1LL * (s[i] - 1) * B - 1LL * (curPos - s[i]) * C;
            if (rem < 0) break;
            int res = rem / A + 1;
            if (curPos + res >= s[i + 1]) {
                res = s[i + 1] - curPos;
                curPos = s[i + 1];
            }
            curPos+= res;
            if (!curCnt) {
                ans+= res;
            } else {
                pq.push(res);                
            }
            curCnt++;
            if (curCnt > k) break;
        }
    }
    while (!pq.empty() && k > 0) {
        ans+= pq.top();
        pq.pop();
        k--;
    }
    cout << ans;
}

int main(void) {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    #define kieuoanh "kieuoanh"
    if (fopen(kieuoanh".inp", "r")) {
        freopen(kieuoanh".inp", "r", stdin);
        freopen(kieuoanh".out", "w", stdout);
    }
    int TEST = 1;
//    cin >> TEST;
    while (TEST--) {
        init();
        process();
    }
    return 0;
}

Compilation message (stderr)

semiexpress.cpp: In function 'int main()':
semiexpress.cpp:81:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |         freopen(kieuoanh".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:82:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |         freopen(kieuoanh".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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