답안 #955694

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
955694	2024-03-31T10:30:19 Z	emad234	말 (IOI15_horses)	C++17	54 / 100	1500 ms	60748 KB

horses

#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
{
	ll 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 <= 70)
	{
		if (x[i] == 1)
		{
			auto it = s.upper_bound({i, i});
			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.lower_bound({i, i});
			seg.s = (*it).l + 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 (ll i = 0; i < N; i++)
	{
		y[i] = Y[i];
		x[i] = X[i];
		seg.update({Y[i], X[i]}, i);
	}
	ll l = -1, r = -1;
	for (ll i = 0; i < N; i++)
	{
		if (X[i] == 1)
		{
			if (l == -1)
				l = i;
			r = i;
		}
		else
		{
			if (l != -1)
			{
				s.insert({l, r});
				l = r = -1;
			}
		}
	}
	if (l != -1)
	{
		s.insert({l, r});
		l = r = -1;
	}
	return solve();
}

int updateX(int pos, int val)
{
	if (x[pos] != 1 && val == 1)
	{
		auto it = s.upper_bound({pos, pos});
		ll l = pos, r = pos;
		if (it != s.end() && (*it).l == pos + 1)
		{
			l = pos, r = (*it).r;
			s.erase(it);
			s.insert({l, r});
		}
		else
			s.insert({pos, pos});
		it = s.lower_bound({pos, pos});
		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:18:12: warning: conversion from 'double' to 'long long int' may change value [-Wfloat-conversion]
   18 |   NN = exp2(ceil(log2(n)));
      |        ~~~~^~~~~~~~~~~~~~~
horses.cpp: In function 'long long int solve()':
horses.cpp:64:12: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   64 |  int i = n - 1;
      |          ~~^~~
horses.cpp:71:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   71 |    i = (*it).l;
      |        ~~~~~~^
horses.cpp:80:7: warning: statement has no effect [-Wunused-value]
   80 |  for (i; i < n; i++)
      |       ^
horses.cpp:93:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   93 |    i = (*it).r;
      |        ~~~~~~^
horses.cpp:63:5: warning: unused variable 'st' [-Wunused-variable]
   63 |  ll st, id = 0;
      |     ^~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:149:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  149 |  return solve();
      |         ~~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:167:8: warning: variable 'p' set but not used [-Wunused-but-set-variable]
  167 |   auto p = s.lower_bound({l, r});
      |        ^
horses.cpp:193:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  193 |  return solve();
      |         ~~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:200:14: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  200 |  return solve();
      |         ~~~~~^~

Subtask #1

17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 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	2396 KB	Output is correct
8	Correct	0 ms	2392 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	0 ms	2392 KB	Output is correct
12	Correct	1 ms	2396 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	2392 KB	Output is correct
17	Correct	0 ms	2396 KB	Output is correct
18	Correct	0 ms	2396 KB	Output is correct
19	Correct	0 ms	2408 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	0 ms	2396 KB	Output is correct
2	Correct	1 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	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 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	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2548 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	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2392 KB	Output is correct
20	Correct	1 ms	2392 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	3 ms	2392 KB	Output is correct
24	Correct	1 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	2 ms	2396 KB	Output is correct
28	Correct	2 ms	2392 KB	Output is correct
29	Correct	3 ms	2396 KB	Output is correct
30	Correct	2 ms	2396 KB	Output is correct
31	Correct	2 ms	2396 KB	Output is correct
32	Correct	3 ms	2396 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	123 ms	45884 KB	Output is correct
2	Correct	158 ms	45908 KB	Output is correct
3	Correct	127 ms	45900 KB	Output is correct
4	Correct	144 ms	45904 KB	Output is correct

Subtask #4

0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 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	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 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	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	0 ms	2396 KB	Output is correct
17	Correct	1 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	1 ms	2392 KB	Output is correct
23	Correct	3 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2392 KB	Output is correct
27	Correct	2 ms	2396 KB	Output is correct
28	Correct	2 ms	2396 KB	Output is correct
29	Correct	2 ms	2396 KB	Output is correct
30	Correct	2 ms	2396 KB	Output is correct
31	Correct	2 ms	2396 KB	Output is correct
32	Correct	3 ms	2396 KB	Output is correct
33	Correct	842 ms	45068 KB	Output is correct
34	Correct	87 ms	45092 KB	Output is correct
35	Correct	100 ms	44964 KB	Output is correct
36	Correct	98 ms	44880 KB	Output is correct
37	Correct	648 ms	45128 KB	Output is correct
38	Correct	151 ms	60500 KB	Output is correct
39	Execution timed out	1530 ms	45132 KB	Time limit exceeded
40	Halted	0 ms	0 KB	-

Subtask #5

0 / 23.0

#	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	2396 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	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	1 ms	2396 KB	Output is correct
16	Correct	0 ms	2396 KB	Output is correct
17	Correct	1 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	1 ms	2396 KB	Output is correct
23	Correct	3 ms	2396 KB	Output is correct
24	Correct	1 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	2 ms	2396 KB	Output is correct
28	Correct	2 ms	2396 KB	Output is correct
29	Correct	2 ms	2396 KB	Output is correct
30	Correct	1 ms	2396 KB	Output is correct
31	Correct	2 ms	2396 KB	Output is correct
32	Correct	3 ms	2396 KB	Output is correct
33	Correct	116 ms	45828 KB	Output is correct
34	Correct	159 ms	45908 KB	Output is correct
35	Correct	127 ms	45832 KB	Output is correct
36	Correct	146 ms	46160 KB	Output is correct
37	Correct	872 ms	45428 KB	Output is correct
38	Correct	82 ms	45036 KB	Output is correct
39	Correct	98 ms	44884 KB	Output is correct
40	Correct	102 ms	45040 KB	Output is correct
41	Correct	638 ms	45264 KB	Output is correct
42	Correct	153 ms	60748 KB	Output is correct
43	Execution timed out	1547 ms	45008 KB	Time limit exceeded
44	Halted	0 ms	0 KB	-