Submission #440260

#	Time	Username	Problem	Language	Result	Execution time	Memory
440260		aryan12	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	19 ms	4548 KiB

semiexpress

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

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

void Solve() {
	int n, m, k;
	cin >> n >> m >> k;
	int a, b, c;
	cin >> a >> b >> c;
	int maxTim;
	cin >> maxTim;
	int express[m + 1];
	for(int i = 0; i < m; i++) {
		cin >> express[i];
		express[i]--;
	}
	express[m] = n;
	int curAns = 0;
	vector<int> ans;
	for(int i = 0; i < m; i++) {
		int pos = express[i];
		for(int j = 0; j <= k - m; j++) {
			int timeleft = maxTim - b * express[i] - c * (pos - express[i]);
			//cout << "i = " << i << ", j = " << j << ", pos = " << pos << ", timeleft = " << timeleft << "\n";
			if(timeleft < 0) {
				break;
			}
			int ending = min(express[i + 1] - 1, pos + timeleft / a);
			//cout << "ending = " << ending << "\n";
			if(ending < pos) {
				break;
			}
			if(j == 0) {
				curAns += ending - pos + 1;
			}
			else {
				ans.push_back(ending - pos + 1);
			}
			pos = ending + 1;
		}
	}
	//cout << "curAns = " << curAns << "\n";
	if(ans.size() != 0) {
		sort(ans.begin(), ans.end());
		reverse(ans.begin(), ans.end());
		int x = ans.size();
		for(int i = 0; i < min(x, k - m); i++) {
			curAns += ans[i];
		}
	}
	cout << curAns - 1 << "\n";
}

int32_t main() {
	auto begin = std::chrono::high_resolution_clock::now();
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int t = 1;
	//cin >> t;
	while(t--) {
		Solve();
	}
	auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
}

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