Submission #756855

#	Time	Username	Problem	Language	Result	Execution time	Memory
756855		1bin	Semiexpress (JOI17_semiexpress)	C++14	100 / 100	15 ms	340 KiB

semiexpress

#include <bits/stdc++.h>

using namespace std;

#define all(v) v.begin(), v.end()
typedef long long ll;
ll n, m, k, A, B, C, T, s[2003], a, b, mx, ans;
priority_queue<ll> pq;

int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    
    cin >> n >> m >> k; k -= m;
    cin >> A >> B >> C >> T;
    for(int i = 0; i < m; i++) cin >> s[i];
    
    s[m] = n + 1;
    for(int i = 0; i < m; i++){
        if(T < 0) break;
        mx = s[i + 1] - s[i];
        a = min(T / A + 1, mx);
        ans += a;
        for(int x = 1; x <= k; x++){
            if(T < a * C || a == mx) break;
            
            b = min((T - a * C) / A + 1, mx - a);
            pq.emplace(-b);
            if(pq.size() > k) pq.pop();
            a += b;
        }
        T -= B * (s[i + 1] - s[i]);
    }
    while(pq.size()){
        ans += -pq.top(); pq.pop();
    }
    cout << ans - 1;
    return 0;
}

Compilation message (stderr)

semiexpress.cpp: In function 'int main()':
semiexpress.cpp:28:26: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   28 |             if(pq.size() > k) pq.pop();
      |                ~~~~~~~~~~^~~

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