oj.uz

Submission #787506

# Submission time Handle Problem Language Result Execution time Memory
787506 2023-07-19T08:45:06 Z Sohsoh84 Shortcut (IOI16_shortcut) C++17
0 / 100
 7 ms 15992 KB 
#include "shortcut.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

#define sep		' '
#define debug(x)	cerr << #x << ": " << x << endl; 

const ll MAXN = 1e6 + 10;
const ll INF = 3e18;

int n;
ll L[MAXN], ps[MAXN], D[MAXN], XT[MAXN], XS[MAXN], c, mx_xt[MAXN], mx_xs[MAXN];

inline ll dist(int i, int j) {
	if (i > j) swap(i, j);
	return ps[j] - ps[i];
}

inline ll solve(int l, int r) {
	ll ans = 0;
	if (c >= dist(l, r)) return INF;

	ans = max(ans, mx_xs[l] + mx_xt[r] - dist(l, r) + c);
	for (int i = l; i <= r; i++) {
		ans = max(ans, min(dist(l, i), dist(i, r) + c) + ps[l] + mx_xs[l] + D[i]);
		ans = max(ans, min(dist(r, i), dist(i, l) + c) - ps[r] + mx_xt[r] + D[i]);	
	}


	for (int i = l; i <= r; i++)
		for (int j = i + 1; j <= r; j++)
			ans = max(ans, min(dist(i, j), dist(i, l) + dist(r, j) + c)+ D[i] + D[j]);

	return ans;
}

ll find_shortcut(int n_, vector<int> l_, vector<int> d_, int c_) {
	n = n_;
	c = c_;

	for (int i = 0; i < MAXN; i++)
		mx_xt[i] = mx_xs[i] = -INF;

	for (int i = 1; i <= n; i++) {
		L[i] = l_[i - 1];
		D[i] = d_[i - 1];
		if (i < n) ps[i + 1] = ps[i] + L[i];

		XS[i] = D[i] - ps[i];
		XT[i] = D[i] + ps[i];

		mx_xs[i] = max(mx_xs[i - 1], XS[i]);
	}

	for (int i = n; i > 0; i--)
		mx_xt[i] = max(mx_xt[i + 1], XT[i]);

	ll ans = 0;
	for (int i = 1; i <= n; i++)
		for (int j = i + 1; j <= n; j++)
			ans = max(ans, dist(i, j) + D[i] + D[j]);

	for (int l = 1; l <= n; l++)
		for (int r = l + 1; r <= n; r++)
			ans = min(ans, solve(l, r));
	return ans;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 15956 KB n = 4, 80 is a correct answer
2 Correct 7 ms 15872 KB n = 9, 110 is a correct answer
3 Correct 6 ms 15908 KB n = 4, 21 is a correct answer
4 Correct 7 ms 15900 KB n = 3, 4 is a correct answer
5 Incorrect 6 ms 15992 KB n = 2, incorrect answer: jury 62 vs contestant 71
6 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 15956 KB n = 4, 80 is a correct answer
2 Correct 7 ms 15872 KB n = 9, 110 is a correct answer
3 Correct 6 ms 15908 KB n = 4, 21 is a correct answer
4 Correct 7 ms 15900 KB n = 3, 4 is a correct answer
5 Incorrect 6 ms 15992 KB n = 2, incorrect answer: jury 62 vs contestant 71
6 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 15956 KB n = 4, 80 is a correct answer
2 Correct 7 ms 15872 KB n = 9, 110 is a correct answer
3 Correct 6 ms 15908 KB n = 4, 21 is a correct answer
4 Correct 7 ms 15900 KB n = 3, 4 is a correct answer
5 Incorrect 6 ms 15992 KB n = 2, incorrect answer: jury 62 vs contestant 71
6 Halted 0 ms 0 KB -

Subtask #4
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 15956 KB n = 4, 80 is a correct answer
2 Correct 7 ms 15872 KB n = 9, 110 is a correct answer
3 Correct 6 ms 15908 KB n = 4, 21 is a correct answer
4 Correct 7 ms 15900 KB n = 3, 4 is a correct answer
5 Incorrect 6 ms 15992 KB n = 2, incorrect answer: jury 62 vs contestant 71
6 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 15956 KB n = 4, 80 is a correct answer
2 Correct 7 ms 15872 KB n = 9, 110 is a correct answer
3 Correct 6 ms 15908 KB n = 4, 21 is a correct answer
4 Correct 7 ms 15900 KB n = 3, 4 is a correct answer
5 Incorrect 6 ms 15992 KB n = 2, incorrect answer: jury 62 vs contestant 71
6 Halted 0 ms 0 KB -

Subtask #6
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 15956 KB n = 4, 80 is a correct answer
2 Correct 7 ms 15872 KB n = 9, 110 is a correct answer
3 Correct 6 ms 15908 KB n = 4, 21 is a correct answer
4 Correct 7 ms 15900 KB n = 3, 4 is a correct answer
5 Incorrect 6 ms 15992 KB n = 2, incorrect answer: jury 62 vs contestant 71
6 Halted 0 ms 0 KB -

Subtask #7
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 15956 KB n = 4, 80 is a correct answer
2 Correct 7 ms 15872 KB n = 9, 110 is a correct answer
3 Correct 6 ms 15908 KB n = 4, 21 is a correct answer
4 Correct 7 ms 15900 KB n = 3, 4 is a correct answer
5 Incorrect 6 ms 15992 KB n = 2, incorrect answer: jury 62 vs contestant 71
6 Halted 0 ms 0 KB -

Subtask #8
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 15956 KB n = 4, 80 is a correct answer
2 Correct 7 ms 15872 KB n = 9, 110 is a correct answer
3 Correct 6 ms 15908 KB n = 4, 21 is a correct answer
4 Correct 7 ms 15900 KB n = 3, 4 is a correct answer
5 Incorrect 6 ms 15992 KB n = 2, incorrect answer: jury 62 vs contestant 71
6 Halted 0 ms 0 KB -