Submission #1265064

#	Time	Username	Problem	Language	Result	Execution time	Memory
1265064		baotoan655	Semiexpress (JOI17_semiexpress)	C++20	100 / 100	6 ms	4536 KiB

semiexpress

#include <bits/stdc++.h>
#define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
using namespace std;

#define int long long
const int N = 3e5 + 5;
int s[N];

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

    file("A") else file("task");


    int n, m, k;
    cin >> n >> m >> k;
    int a, b, c, t;
    cin >> a >> b >> c >> t;
    for (int i = 1; i <= m; i ++) {
        cin >> s[i];
    }
    priority_queue<int>pq;
    k -= m;
    int ans = 0;
    for (int i = 1; i < m; i ++) {
        int pos = s[i];
        bool cc = 0;
        int cnt = 0;
        while (pos < s[i + 1]) {
            int curT = t - (s[i] - 1) * b - (pos - s[i]) * c;
            if (curT < 0) {
                break;
            }
            int res = curT / a + 1;
            if (pos + res >= s[i + 1]) {
                res = s[i + 1] - pos;
                pos = s[i + 1];
            }
            pos += res;
            if (!cc) {
                ans += res;
                cc = 1;
            }
            else {
                pq.push (res);
            }
            if (++cnt > k + 1) {
                break;
            }
        }
    }
    ans += (t >= (n - 1) * b) - 1;
    int kk = k;
    while (!pq.empty () && kk--) {
        ans += pq.top ();
        pq.pop ();
    }
    cout << ans;
}

Compilation message (stderr)

semiexpress.cpp: In function 'int32_t main()':
semiexpress.cpp:2:58: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:13:5: note: in expansion of macro 'file'
   13 |     file("A") else file("task");
      |     ^~~~
semiexpress.cpp:2:91: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                                                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:13:5: note: in expansion of macro 'file'
   13 |     file("A") else file("task");
      |     ^~~~
semiexpress.cpp:2:58: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:13:20: note: in expansion of macro 'file'
   13 |     file("A") else file("task");
      |                    ^~~~
semiexpress.cpp:2:91: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                                                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:13:20: note: in expansion of macro 'file'
   13 |     file("A") else file("task");
      |                    ^~~~

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