oj.uz

답안 #787576

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
787576 2023-07-19T09:52:16 Z ymm Shortcut (IOI16_shortcut) C++17
0 / 100
 1 ms 212 KB 
#include "shortcut.h"
#include <bits/stdc++.h>
#define Loop(x,l,r) for (ll x = (l); x < (r); ++x)
#define LoopR(x,l,r) for (ll x = (r)-1; x >= (l); --x)
typedef long long ll;
typedef std::pair<ll,ll> pll;
using namespace std;

const int N = 3030;
ll ps[N], a[N], C;
int n;

ll calcin(int l, int r)
{
	ll ans = 0;
	Loop (i,l,r+1) Loop (j,i+1,r+1) {
		ll x = ps[j] - ps[i];
		ll y = ps[r] - ps[j] + ps[i] - ps[l] + C;
		ans = max(ans, min(x, y) + a[i] + a[j]);
	}
	return ans;
	//int p = l;
	//vector<int> vec;
	//int vecp = 0;
	//auto cw = [&](int i, int j) {
	//	assert(l <= i && i <= r && l <= j && j <= r);
	//	if (i == j)
	//		return 0;
	//	int x = min(i, j);
	//	int y = max(i, j);
	//	ll v1 = ps[y] - ps[x];
	//	ll v2 = C + ps[r] - ps[y] + ps[x] - ps[l];
	//	if (v1 == v2)
	//		return 1;
	//	return (v1 < v2) ^ (i > j);
	//};
	//auto dis = [&](int i, int j) {
	//	assert(l <= i && i <= r && l <= j && j <= r);
	//	if (i < j)
	//		return ps[j] - ps[i] + a[j] + a[i];
	//	else
	//		return C + ps[r] - ps[i] + ps[j] - ps[l] + a[i] + a[j];
	//};
	//auto mod = [&](int x) {
	//	return (x-l)%(r-l+1)+l;
	//};
	//ll ans = 0;
	//Loop (i,l,r+1) {
	//	p = max<int>(p, i+1);
	//	while (vecp < vec.size() && vec[vecp] <= i)
	//		++vecp;
	//	while (cw(i, mod(p))) {
	//		while (vecp < vec.size() && dis(i, mod(vec.back())) <= dis(i, mod(p)))
	//			vec.pop_back();
	//		vec.push_back(p);
	//		++p;
	//	}
	//	if (vecp < vec.size()) {
	//		ans = max(ans, dis(i, mod(vec[vecp])));
	//		//cerr << i << ' ' << mod(vec[vecp]) << ' ' << dis(i, mod(vec[vecp])) << '\n';
	//	}
	//}
	//return ans;
}

ll calc0(int l, int r)
{
	ll ans = calcin(l, r);
	ll mx = -1e18;
	Loop (i,0,l) {
		ans = max(ans, ps[i] + a[i] + mx);
		mx = max(mx, a[i] - ps[i]);
	}
	Loop (i,l,r+1) {
		ll x = min(ps[i], ps[r] - ps[i] + ps[l] + C);
		ans = max(ans, a[i] + x + mx);
	}
	return ans;
}
ll calcn(int l, int r)
{
	ll ans = 0;
	ll mx = -1e18;
	LoopR (i,r+1,n) {
		ans = max(ans, a[i] - ps[i] + mx);
		mx = max(mx, a[i] + ps[i]);
	}
	LoopR (i,0,r+1) {
		ll x = min(-ps[i], -ps[r] + ps[i] - ps[l] + C);
		ans = max(ans, a[i] + x + mx);
	}
	return ans;
}

long long find_shortcut(int _n, std::vector<int> l, std::vector<int> d, int c)
{
	n = _n;
	Loop (i,1,n)
		ps[i] = ps[i-1] + l[i-1];
	Loop (i,0,n)
		a[i] = d[i];
	C = c;
	ll ans = 1e18;
	Loop (i,0,n-1) {
		int l = i+1, r = n-1;
		while (l < r) {
			int j = (l+r+1)/2;
			ll a = calc0(i, j);
			ll b = calcn(i, j);
			if (a <= b)
				l = j;
			else
				r = j-1;
		}
		ans = min(ans, max(calc0(i, l), calcn(i, l)));
		if (l < n-1)
			ans = min(ans, max(calc0(i, l+1), calcn(i, l+1)));
	}
	return ans;
}

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 4, 80 is a correct answer
2 Correct 0 ms 212 KB n = 9, 110 is a correct answer
3 Correct 0 ms 212 KB n = 4, 21 is a correct answer
4 Correct 1 ms 212 KB n = 3, 4 is a correct answer
5 Correct 0 ms 212 KB n = 2, 62 is a correct answer
6 Correct 0 ms 212 KB n = 2, 3 is a correct answer
7 Correct 0 ms 212 KB n = 3, 29 is a correct answer
8 Correct 0 ms 212 KB n = 2, 3 is a correct answer
9 Correct 0 ms 212 KB n = 2, 3 is a correct answer
10 Correct 0 ms 212 KB n = 2, 2000000001 is a correct answer
11 Correct 0 ms 212 KB n = 2, 3000000000 is a correct answer
12 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
13 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
14 Correct 0 ms 212 KB n = 4, 3000000001 is a correct answer
15 Correct 0 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 0 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 0 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000241
18 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 4, 80 is a correct answer
2 Correct 0 ms 212 KB n = 9, 110 is a correct answer
3 Correct 0 ms 212 KB n = 4, 21 is a correct answer
4 Correct 1 ms 212 KB n = 3, 4 is a correct answer
5 Correct 0 ms 212 KB n = 2, 62 is a correct answer
6 Correct 0 ms 212 KB n = 2, 3 is a correct answer
7 Correct 0 ms 212 KB n = 3, 29 is a correct answer
8 Correct 0 ms 212 KB n = 2, 3 is a correct answer
9 Correct 0 ms 212 KB n = 2, 3 is a correct answer
10 Correct 0 ms 212 KB n = 2, 2000000001 is a correct answer
11 Correct 0 ms 212 KB n = 2, 3000000000 is a correct answer
12 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
13 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
14 Correct 0 ms 212 KB n = 4, 3000000001 is a correct answer
15 Correct 0 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 0 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 0 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000241
18 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 4, 80 is a correct answer
2 Correct 0 ms 212 KB n = 9, 110 is a correct answer
3 Correct 0 ms 212 KB n = 4, 21 is a correct answer
4 Correct 1 ms 212 KB n = 3, 4 is a correct answer
5 Correct 0 ms 212 KB n = 2, 62 is a correct answer
6 Correct 0 ms 212 KB n = 2, 3 is a correct answer
7 Correct 0 ms 212 KB n = 3, 29 is a correct answer
8 Correct 0 ms 212 KB n = 2, 3 is a correct answer
9 Correct 0 ms 212 KB n = 2, 3 is a correct answer
10 Correct 0 ms 212 KB n = 2, 2000000001 is a correct answer
11 Correct 0 ms 212 KB n = 2, 3000000000 is a correct answer
12 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
13 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
14 Correct 0 ms 212 KB n = 4, 3000000001 is a correct answer
15 Correct 0 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 0 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 0 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000241
18 Halted 0 ms 0 KB -

Subtask #4
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 4, 80 is a correct answer
2 Correct 0 ms 212 KB n = 9, 110 is a correct answer
3 Correct 0 ms 212 KB n = 4, 21 is a correct answer
4 Correct 1 ms 212 KB n = 3, 4 is a correct answer
5 Correct 0 ms 212 KB n = 2, 62 is a correct answer
6 Correct 0 ms 212 KB n = 2, 3 is a correct answer
7 Correct 0 ms 212 KB n = 3, 29 is a correct answer
8 Correct 0 ms 212 KB n = 2, 3 is a correct answer
9 Correct 0 ms 212 KB n = 2, 3 is a correct answer
10 Correct 0 ms 212 KB n = 2, 2000000001 is a correct answer
11 Correct 0 ms 212 KB n = 2, 3000000000 is a correct answer
12 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
13 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
14 Correct 0 ms 212 KB n = 4, 3000000001 is a correct answer
15 Correct 0 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 0 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 0 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000241
18 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 4, 80 is a correct answer
2 Correct 0 ms 212 KB n = 9, 110 is a correct answer
3 Correct 0 ms 212 KB n = 4, 21 is a correct answer
4 Correct 1 ms 212 KB n = 3, 4 is a correct answer
5 Correct 0 ms 212 KB n = 2, 62 is a correct answer
6 Correct 0 ms 212 KB n = 2, 3 is a correct answer
7 Correct 0 ms 212 KB n = 3, 29 is a correct answer
8 Correct 0 ms 212 KB n = 2, 3 is a correct answer
9 Correct 0 ms 212 KB n = 2, 3 is a correct answer
10 Correct 0 ms 212 KB n = 2, 2000000001 is a correct answer
11 Correct 0 ms 212 KB n = 2, 3000000000 is a correct answer
12 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
13 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
14 Correct 0 ms 212 KB n = 4, 3000000001 is a correct answer
15 Correct 0 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 0 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 0 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000241
18 Halted 0 ms 0 KB -

Subtask #6
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 4, 80 is a correct answer
2 Correct 0 ms 212 KB n = 9, 110 is a correct answer
3 Correct 0 ms 212 KB n = 4, 21 is a correct answer
4 Correct 1 ms 212 KB n = 3, 4 is a correct answer
5 Correct 0 ms 212 KB n = 2, 62 is a correct answer
6 Correct 0 ms 212 KB n = 2, 3 is a correct answer
7 Correct 0 ms 212 KB n = 3, 29 is a correct answer
8 Correct 0 ms 212 KB n = 2, 3 is a correct answer
9 Correct 0 ms 212 KB n = 2, 3 is a correct answer
10 Correct 0 ms 212 KB n = 2, 2000000001 is a correct answer
11 Correct 0 ms 212 KB n = 2, 3000000000 is a correct answer
12 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
13 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
14 Correct 0 ms 212 KB n = 4, 3000000001 is a correct answer
15 Correct 0 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 0 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 0 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000241
18 Halted 0 ms 0 KB -

Subtask #7
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 4, 80 is a correct answer
2 Correct 0 ms 212 KB n = 9, 110 is a correct answer
3 Correct 0 ms 212 KB n = 4, 21 is a correct answer
4 Correct 1 ms 212 KB n = 3, 4 is a correct answer
5 Correct 0 ms 212 KB n = 2, 62 is a correct answer
6 Correct 0 ms 212 KB n = 2, 3 is a correct answer
7 Correct 0 ms 212 KB n = 3, 29 is a correct answer
8 Correct 0 ms 212 KB n = 2, 3 is a correct answer
9 Correct 0 ms 212 KB n = 2, 3 is a correct answer
10 Correct 0 ms 212 KB n = 2, 2000000001 is a correct answer
11 Correct 0 ms 212 KB n = 2, 3000000000 is a correct answer
12 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
13 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
14 Correct 0 ms 212 KB n = 4, 3000000001 is a correct answer
15 Correct 0 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 0 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 0 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000241
18 Halted 0 ms 0 KB -

Subtask #8
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB n = 4, 80 is a correct answer
2 Correct 0 ms 212 KB n = 9, 110 is a correct answer
3 Correct 0 ms 212 KB n = 4, 21 is a correct answer
4 Correct 1 ms 212 KB n = 3, 4 is a correct answer
5 Correct 0 ms 212 KB n = 2, 62 is a correct answer
6 Correct 0 ms 212 KB n = 2, 3 is a correct answer
7 Correct 0 ms 212 KB n = 3, 29 is a correct answer
8 Correct 0 ms 212 KB n = 2, 3 is a correct answer
9 Correct 0 ms 212 KB n = 2, 3 is a correct answer
10 Correct 0 ms 212 KB n = 2, 2000000001 is a correct answer
11 Correct 0 ms 212 KB n = 2, 3000000000 is a correct answer
12 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
13 Correct 0 ms 212 KB n = 3, 3000000000 is a correct answer
14 Correct 0 ms 212 KB n = 4, 3000000001 is a correct answer
15 Correct 0 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 0 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 0 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000241
18 Halted 0 ms 0 KB -