답안 #359078

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
359078	2021-01-26T10:23:03 Z	jesus_coconut	Tower Defense (CEOI19_towerdefense)	C++17	25 / 100	1 ms	364 KB

towerdefense

#include <bits/stdc++.h>

using namespace std;

using pii = pair<int, int>;

pii s, t;
int d;

void read() {
	cin >> s.first >> s.second;
	cin >> t.first >> t.second;
	cin >> d;
}

int dist(pii s, pii t) {
	return abs(s.first - t.first) + abs(s.second - t.second);
}

void solve() {
	read();
	int dd = d - dist(s, t);
	if (dd == 0) {
		cout << 0 << '\n';
	} else if (dd < 0 || dd % 2 || (d == 2 && abs(s.first - t.first) == 1)) {
		cout << "impossible\n";
	} else {
		vector<pair<int, int>> ans;
		if (abs(s.first - t.first) > 1) {
			int x = t.first + (s.first - t.first) / abs(s.first - t.first);
			for (int i = min(s.second, t.second); i <= max(s.second, t.second); ++i) {
				ans.emplace_back(x, i);
			}
			dd -= 2;
			int mn = min(s.second, t.second) - 1;
			int mx = max(s.second, t.second) + 1;
			while (dd > 0) {
				ans.emplace_back(x, mn);
				ans.emplace_back(x, mx);
				dd -= 2;
				--mn;
				++mx;
			}
		} else {
			int y = t.second + (s.second - t.second) / abs(s.second - t.second);
			for (int i = min(s.first, t.first); i <= max(s.first, t.first); ++i) {
				ans.emplace_back(i, y);
			}
			dd -= 2;
			int mn = min(s.first, t.first) - 1;
			int mx = max(s.first, t.first) + 1;
			while (dd > 0) {
				ans.emplace_back(mn, y);
				ans.emplace_back(mx, y);
				dd -= 2;
				--mn;
				++mx;
			}
		}
		cout << ans.size() << '\n';
		for (auto &[a, b] : ans) cout << a << ' ' << b << '\n';
	}
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);

	solve();

	return 0;
}

Subtask #1

25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	0 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct

Subtask #2

0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	0 ms	364 KB	Output is correct
3	Correct	0 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	0 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	0 ms	364 KB	Output is correct
11	Correct	0 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Incorrect	1 ms	364 KB	Expected but did not find "impossible".
15	Halted	0 ms	0 KB	-

Subtask #3

0 / 47.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	0 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	0 ms	364 KB	Output is correct
10	Correct	0 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	0 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	0 ms	364 KB	Output is correct
18	Correct	0 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Incorrect	1 ms	364 KB	Expected but did not find "impossible".
22	Halted	0 ms	0 KB	-