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Submission #915013

# Submission time Handle Problem Language Result Execution time Memory
915013 2024-01-23T07:56:01 Z happypotato Collecting Stamps 3 (JOI20_ho_t3) C++17
0 / 100
 1 ms 500 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
int32_t main() {
	ios::sync_with_stdio(0); cin.tie(0);
	int n, l;
	cin >> n >> l;
	int x[n];
	for (int i = 0; i < n; i++) cin >> x[i];
	int t[n];
	for (int i = 0; i < n; i++) cin >> t[i];
	int ans = 0;
	for (int sl = 0; sl <= n; sl++) {
		for (int sr = 0; sl + sr <= n; sr++) {
			int cost;
			int cur1 = 0; cost = (sl == 0 ? 0 : x[sl - 1]) * 2;
			for (int i = 0; i < sl; i++) cur1 += (x[i] <= t[i]);
			for (int i = n - 1; i >= n - sr; i--) cur1 += (cost + (l - x[i]) <= t[i]);
			int cur2 = 0; cost = (sr == 0 ? 0 : x[n - sr]) * 2;
			for (int i = n - 1; i >= n - sr; i--) cur2 += ((l - x[i]) <= t[i]);
			for (int i = 0; i < sl; i++) cur2 += ((cost + x[i]) <= t[i]);
			ans = max(ans, max(cur1, cur2));
		}
	}
	cout << ans << '\n';
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 500 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 500 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 500 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 500 KB Output isn't correct
3 Halted 0 ms 0 KB -