oj.uz

답안 #834496

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
834496 2023-08-22T14:57:15 Z caganyanmaz Shortcut (IOI16_shortcut) C++17
0 / 100
 1 ms 304 KB 
#include <bits/stdc++.h>
#define pb push_back
#define int int64_t
#include "shortcut.h"
//#define DEBUGGING

#ifdef DEBUGGING
#include "../debug.h"
#else
#define debug(x...) void(42)
#endif
using namespace std;

constexpr static int MXN = 1e6 + 5;
constexpr static int INF = 1e18;
int pf[MXN];
array<int, 2> jv[MXN];
array<int, 2> iv[MXN];
vector<int> d, l;
int c, n;

static inline int dist(int a, int b)
{
	return pf[max(a, b)] - pf[min(a, b)];
}

vector<int> order;

bool check(int k)
{
	int xl = -INF, xr = INF, yl = -INF, yr = INF;
	int j = n;
/*
	for (int i = n-1; i >= 0; i--)
	{
		while (j > 0 && jv[j-1][0] > k - iv[i][0]) j--;
		if (j == n)
			continue;
		xl = max(xl,  pf[i] + d[i] - k + jv[n-1][0] + c); // Always the biggest
		xr = min(xr,  pf[i] - d[i] + k - jv[j][1] - c);
		yl = max(yl, -pf[i] + d[i] - k + jv[n-1][0] + c);
		yr = min(yr, -pf[i] - d[i] + k - jv[j][1] - c);
	}
	*/
	for (int i = 0; i < n; i++)
	{
		for (int j = i+1; j < n; j++)
		{
			if (dist(i, j) + d[i] + d[j] > k)
			{
				xl = max(xl, pf[j] + pf[i] - k + c + d[i] + d[j]);
				xr = min(xr, pf[j] + pf[i] + k - c - d[i] - d[j]);
				yl = max(yl, pf[j] - pf[i] - k + c + d[i] + d[j]);
				yr = min(yr, pf[j] - pf[i] + k - c - d[i] - d[j]);
			}
		}
	}
	xr++, yr++;
	if (xr <= xl || yr <= yl)
		return false;
	debug(xl, xr, yl, yr);
	int xs = n, xe = n, ys = 1, ye = 1;
	for (int i = 0; i < n; i++)
	{
		while (xs > 0 && pf[xs-1] + pf[i] >= xl) xs--;
		while (xe > 0 && pf[xe-1] + pf[i] >= xr) xe--;
		while (ys < n && pf[ys] + pf[i] < yl) ys++;
		while (ye < n && pf[ye] + pf[i] < yr) ye++;
		if (max(xs, ys) <= min(xe, ye))
			return true;
	}

	return false;
}

long long find_shortcut(int32_t _n, vector<int32_t> _l, vector<int32_t> _d, int32_t _c)
{
	c = _c;
	n = _n;
	for (int i : _l)
		l.pb(i);
	for (int i : _d)
		d.pb(i);
	
	array<int, 3> v = {0, 0, 0};
	for (int i = 1; i <= n; i++)
		pf[i] = pf[i-1] + l[i-1];
	//int ll = v[1] + v[2] + c - 1, rr = INF;
	for (int j = 0; j < n; j++)
		jv[j] = {pf[j] + d[j], d[j] - pf[j]};
	sort(jv, jv + n);
	for (int j = n-2; j >= 0; j--)
		jv[j][1] = max(jv[j][1], jv[j+1][1]);
	
	for (int i = 0; i < n; i++)
		iv[i] = {pf[i] + d[i], i};
	sort(iv, iv + n);
	int ll = 0, rr = INF;
	while (rr - ll > 1)
	{
		int m = ll+rr>>1;
		if (check(m))
			rr = m;
		else
			ll = m;
	}
	return rr;
}

Compilation message

shortcut.cpp: In function 'bool check(int64_t)':
shortcut.cpp:32:6: warning: unused variable 'j' [-Wunused-variable]
   32 |  int j = n;
      |      ^
shortcut.cpp: In function 'long long int find_shortcut(int32_t, std::vector<int>, std::vector<int>, int32_t)':
shortcut.cpp:101:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  101 |   int m = ll+rr>>1;
      |           ~~^~~
shortcut.cpp:85:16: warning: unused variable 'v' [-Wunused-variable]
   85 |  array<int, 3> v = {0, 0, 0};
      |                ^

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB n = 4, 80 is a correct answer
2 Correct 1 ms 212 KB n = 9, 110 is a correct answer
3 Correct 1 ms 212 KB n = 4, 21 is a correct answer
4 Correct 0 ms 212 KB n = 3, 4 is a correct answer
5 Correct 1 ms 304 KB n = 2, 62 is a correct answer
6 Correct 1 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 1 ms 212 KB n = 2, 3 is a correct answer
9 Correct 1 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 1 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 1 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 1 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 1 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 1 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000317
18 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB n = 4, 80 is a correct answer
2 Correct 1 ms 212 KB n = 9, 110 is a correct answer
3 Correct 1 ms 212 KB n = 4, 21 is a correct answer
4 Correct 0 ms 212 KB n = 3, 4 is a correct answer
5 Correct 1 ms 304 KB n = 2, 62 is a correct answer
6 Correct 1 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 1 ms 212 KB n = 2, 3 is a correct answer
9 Correct 1 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 1 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 1 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 1 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 1 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 1 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000317
18 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB n = 4, 80 is a correct answer
2 Correct 1 ms 212 KB n = 9, 110 is a correct answer
3 Correct 1 ms 212 KB n = 4, 21 is a correct answer
4 Correct 0 ms 212 KB n = 3, 4 is a correct answer
5 Correct 1 ms 304 KB n = 2, 62 is a correct answer
6 Correct 1 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 1 ms 212 KB n = 2, 3 is a correct answer
9 Correct 1 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 1 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 1 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 1 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 1 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 1 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000317
18 Halted 0 ms 0 KB -

Subtask #4
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB n = 4, 80 is a correct answer
2 Correct 1 ms 212 KB n = 9, 110 is a correct answer
3 Correct 1 ms 212 KB n = 4, 21 is a correct answer
4 Correct 0 ms 212 KB n = 3, 4 is a correct answer
5 Correct 1 ms 304 KB n = 2, 62 is a correct answer
6 Correct 1 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 1 ms 212 KB n = 2, 3 is a correct answer
9 Correct 1 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 1 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 1 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 1 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 1 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 1 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000317
18 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB n = 4, 80 is a correct answer
2 Correct 1 ms 212 KB n = 9, 110 is a correct answer
3 Correct 1 ms 212 KB n = 4, 21 is a correct answer
4 Correct 0 ms 212 KB n = 3, 4 is a correct answer
5 Correct 1 ms 304 KB n = 2, 62 is a correct answer
6 Correct 1 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 1 ms 212 KB n = 2, 3 is a correct answer
9 Correct 1 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 1 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 1 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 1 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 1 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 1 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000317
18 Halted 0 ms 0 KB -

Subtask #6
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB n = 4, 80 is a correct answer
2 Correct 1 ms 212 KB n = 9, 110 is a correct answer
3 Correct 1 ms 212 KB n = 4, 21 is a correct answer
4 Correct 0 ms 212 KB n = 3, 4 is a correct answer
5 Correct 1 ms 304 KB n = 2, 62 is a correct answer
6 Correct 1 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 1 ms 212 KB n = 2, 3 is a correct answer
9 Correct 1 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 1 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 1 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 1 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 1 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 1 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000317
18 Halted 0 ms 0 KB -

Subtask #7
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB n = 4, 80 is a correct answer
2 Correct 1 ms 212 KB n = 9, 110 is a correct answer
3 Correct 1 ms 212 KB n = 4, 21 is a correct answer
4 Correct 0 ms 212 KB n = 3, 4 is a correct answer
5 Correct 1 ms 304 KB n = 2, 62 is a correct answer
6 Correct 1 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 1 ms 212 KB n = 2, 3 is a correct answer
9 Correct 1 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 1 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 1 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 1 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 1 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 1 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000317
18 Halted 0 ms 0 KB -

Subtask #8
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB n = 4, 80 is a correct answer
2 Correct 1 ms 212 KB n = 9, 110 is a correct answer
3 Correct 1 ms 212 KB n = 4, 21 is a correct answer
4 Correct 0 ms 212 KB n = 3, 4 is a correct answer
5 Correct 1 ms 304 KB n = 2, 62 is a correct answer
6 Correct 1 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 1 ms 212 KB n = 2, 3 is a correct answer
9 Correct 1 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 1 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 1 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 1 ms 212 KB n = 4, 4000000000 is a correct answer
16 Correct 1 ms 212 KB n = 5, 4000000000 is a correct answer
17 Incorrect 1 ms 212 KB n = 10, incorrect answer: jury 1000000343 vs contestant 1000000317
18 Halted 0 ms 0 KB -