oj.uz

답안 #992994

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
992994 2024-06-05T08:48:42 Z emad234 말 (IOI15_horses) C++17
77 / 100
 1500 ms 57620 KB 
#include "horses.h"
#include <bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define pii pair<ll, ll>
const ll mod = 1e9 + 7;
const ll mxN = 5e5 + 5;
using namespace std;
ll NN;
struct tree
{
	vector<pii> seg;
	ll s, e;
	void init(ll n)
	{
		NN = exp2(ceil(log2(n)));
		seg.resize(NN * 4);
	}
	ll queryMax(ll l = 1, ll r = NN, ll ind = 1)
	{
		if (l > e || r < s)
			return 0;
		if (l >= s && r <= e)
			return seg[ind].F;
		ll md = (l + r) / 2;
		return max(queryMax(l, md, ind * 2), queryMax(md + 1, r, ind * 2 + 1));
	}
	ll queryProd(ll l = 1, ll r = NN, ll ind = 1)
	{
		if (l > e || r < s)
			return 1;
		if (l >= s && r <= e)
			return seg[ind].S;
		ll md = (l + r) / 2;
		return (queryProd(l, md, ind * 2) * queryProd(md + 1, r, ind * 2 + 1)) % mod;
	}
	void update(pii val, ll ind)
	{
		ind += NN;
		seg[ind] = val;
		while (ind /= 2)
		{
			seg[ind].F = max(seg[ind * 2].F, seg[ind * 2 + 1].F);
			seg[ind].S = (seg[ind * 2].S * seg[ind * 2 + 1].S) % mod;
		}
	}
} seg;
struct ones
{
	int l,r;
	friend bool operator<(ones a, ones b) {return a.l < b.l;}
};
 
set<ones> s;
ll x[mxN], y[mxN];
ll n;
ll solve()
{
	ll st, id = 0;
	int i = n - 1;
	while (i > 0 && id <= 100)
	{
		if (x[i] == 1)
		{
			auto it = s.upper_bound({i, INT_MAX});
			it--;
			i = (*it).l;
			id--;
		}
		i--;
		id++;
	}
	if (i == -1)
		i = 0;
	ll mx = -1, mxid = -1;
	ll prd = 1;
	for (i; i < n; i++)
	{
		if (x[i] == 1)
		{
			auto it = s.upper_bound({i, INT_MAX});
			it--;
			seg.s = i + 1, seg.e = (*it).r + 1;
			ll val = seg.queryMax();
			if (val * prd > mx)
			{
				mx = val;
				mxid = i;
				prd = 1;
			}
			i = (*it).r;
			continue;
		}
		if (prd * x[i] > mx)
		{
			mx = y[i];
			mxid = i;
			prd = 1;
			continue;
		}
		prd *= x[i];
		if (prd * y[i] > mx)
		{
			mx = y[i];
			mxid = i;
			prd = 1;
			continue;
		}
	}
	seg.s = 1;
	seg.e = mxid + 1;
	return (mx * seg.queryProd()) % mod;
}
int init(int N, int X[], int Y[])
{
	seg.init(N);
	n = N;
	for (int i = 0; i < N; i++)
	{
		y[i] = Y[i];
		x[i] = X[i];
		seg.update({Y[i], X[i]}, i);
	}
	int l = -1, r = -1;
	for (int i = 0; i < N; i++)
	{
		// s.insert({i, i});
		if (X[i] == 1)
		{
			if (l == -1)
				l = i;
			r = i;
		}
		else
		{
			if (l != -1)
			{
				s.insert({l, r});
				l = -1;r = -1;
			}
		}
	}
	if (l != -1)
	{
		s.insert({l, r});
		l = -1; r = -1;
	}
	// for (auto el : s)
	// {
	// 	fprintf(_outputFile, "%d ", el.l);
	// 	fprintf(_outputFile, "%d\n", el.r);
	// }
	return solve();
}
 
int updateX(int pos, int val)
{
	if (x[pos] != 1 && val == 1)
	{
		auto it = s.upper_bound({pos, pos});
		int l = pos, r = pos;
		if (it != s.end() && (*it).l == pos + 1)
		{
			l = pos, r = (*it).r;
			s.erase(it);
		}
		s.insert({l, r});
		it = s.lower_bound({l, r});
		auto p = s.lower_bound({l, r});
		if (it != s.begin())
		{
			it--;
			if ((*it).r == l - 1)
			{
				l = (*it).l;
				s.erase(it);
				s.erase(s.lower_bound({pos, pos}));
				s.insert({l, r});
			}
		}
	}
	if (x[pos] == 1 && val != 1)
	{
		auto it = s.upper_bound({pos, 0});
		it--;
		ll l = (*it).l, r = pos - 1, l1 = pos + 1, r1 = (*it).r;
		s.erase(it);
		if (l <= r)
			s.insert({l, r});
		if (l1 <= r1)
			s.insert({l1, r1});
	}
	x[pos] = val;
	seg.update({y[pos], x[pos]}, pos);
	return solve();
}
 
int updateY(int pos, int val)
{
	y[pos] = val;
	seg.update({y[pos], x[pos]}, pos);
	return solve();
}

Compilation message

horses.cpp: In member function 'void tree::init(long long int)':
horses.cpp:17:12: warning: conversion from 'double' to 'long long int' may change value [-Wfloat-conversion]
   17 |   NN = exp2(ceil(log2(n)));
      |        ~~~~^~~~~~~~~~~~~~~
horses.cpp: In function 'long long int solve()':
horses.cpp:61:12: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   61 |  int i = n - 1;
      |          ~~^~~
horses.cpp:78:7: warning: statement has no effect [-Wunused-value]
   78 |  for (i; i < n; i++)
      |       ^
horses.cpp:60:5: warning: unused variable 'st' [-Wunused-variable]
   60 |  ll st, id = 0;
      |     ^~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:154:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  154 |  return solve();
      |         ~~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:170:8: warning: variable 'p' set but not used [-Wunused-but-set-variable]
  170 |   auto p = s.lower_bound({l, r});
      |        ^
horses.cpp:190:14: warning: narrowing conversion of 'l' from 'long long int' to 'int' [-Wnarrowing]
  190 |    s.insert({l, r});
      |              ^
horses.cpp:190:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
horses.cpp:190:17: warning: narrowing conversion of 'r' from 'long long int' to 'int' [-Wnarrowing]
  190 |    s.insert({l, r});
      |                 ^
horses.cpp:190:17: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
horses.cpp:192:14: warning: narrowing conversion of 'l1' from 'long long int' to 'int' [-Wnarrowing]
  192 |    s.insert({l1, r1});
      |              ^~
horses.cpp:192:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
horses.cpp:192:18: warning: narrowing conversion of 'r1' from 'long long int' to 'int' [-Wnarrowing]
  192 |    s.insert({l1, r1});
      |                  ^~
horses.cpp:192:18: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
horses.cpp:196:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  196 |  return solve();
      |         ~~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:203:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  203 |  return solve();
      |         ~~~~~^~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 ms 2488 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2496 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 6 ms 2396 KB Output is correct
24 Correct 2 ms 2396 KB Output is correct
25 Correct 2 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 5 ms 2396 KB Output is correct
28 Correct 4 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 2 ms 2396 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 124 ms 45908 KB Output is correct
2 Correct 178 ms 45908 KB Output is correct
3 Correct 133 ms 45908 KB Output is correct
4 Correct 158 ms 45916 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2392 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 0 ms 2460 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 6 ms 2396 KB Output is correct
24 Correct 4 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 7 ms 2396 KB Output is correct
28 Correct 4 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 2 ms 2396 KB Output is correct
33 Correct 212 ms 45152 KB Output is correct
34 Correct 96 ms 45136 KB Output is correct
35 Correct 105 ms 44880 KB Output is correct
36 Correct 103 ms 44884 KB Output is correct
37 Correct 199 ms 45140 KB Output is correct
38 Correct 252 ms 56812 KB Output is correct
39 Correct 74 ms 44880 KB Output is correct
40 Correct 88 ms 45036 KB Output is correct
41 Correct 72 ms 45036 KB Output is correct
42 Correct 97 ms 44880 KB Output is correct
43 Correct 88 ms 44880 KB Output is correct
44 Correct 84 ms 44792 KB Output is correct

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2648 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2500 KB Output is correct
23 Correct 5 ms 2396 KB Output is correct
24 Correct 2 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 5 ms 2396 KB Output is correct
28 Correct 4 ms 2392 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 2 ms 2396 KB Output is correct
33 Correct 127 ms 45828 KB Output is correct
34 Correct 164 ms 45908 KB Output is correct
35 Correct 127 ms 45820 KB Output is correct
36 Correct 150 ms 45908 KB Output is correct
37 Correct 206 ms 45136 KB Output is correct
38 Correct 84 ms 45140 KB Output is correct
39 Correct 107 ms 44896 KB Output is correct
40 Correct 103 ms 45040 KB Output is correct
41 Correct 195 ms 45140 KB Output is correct
42 Correct 253 ms 56656 KB Output is correct
43 Correct 78 ms 44780 KB Output is correct
44 Correct 90 ms 44884 KB Output is correct
45 Correct 70 ms 44884 KB Output is correct
46 Correct 96 ms 44880 KB Output is correct
47 Correct 85 ms 44880 KB Output is correct
48 Correct 86 ms 44796 KB Output is correct
49 Correct 1378 ms 47048 KB Output is correct
50 Correct 221 ms 46932 KB Output is correct
51 Correct 204 ms 45904 KB Output is correct
52 Correct 158 ms 45904 KB Output is correct
53 Correct 1398 ms 46928 KB Output is correct
54 Execution timed out 1558 ms 57620 KB Time limit exceeded
55 Halted 0 ms 0 KB -