oj.uz

답안 #785205

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
785205 2023-07-17T07:09:28 Z NothingXD 말 (IOI15_horses) C++17
77 / 100
 1500 ms 61660 KB 
#include "horses.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef complex<ld> point;

void debug_out(){cerr << endl;}

template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
	cout << H << " ";
	debug_out(T...);
}

#define debug(...) cerr << "(" << #__VA_ARGS__ << "): ", debug_out(__VA_ARGS__)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define MP(x, y) make_pair(x, y)

const int maxn = 5e5 + 10;
const int mod = 1e9 + 7;

int n;
ll x[maxn], y[maxn];
ll seg[maxn << 2], dp[maxn << 2][2];
bool of[maxn << 2];

void build(int v, int l, int r){
	if (l + 1 == r){
		seg[v] = x[l];

		return;
	}
	int mid = (l + r) >> 1;
	build(v << 1, l, mid);
	build(v << 1 | 1, mid, r);
	ll tmp = 1ll * seg[v << 1] * seg[v << 1 | 1];
	if (tmp >= mod || of[v << 1] || of[v << 1 | 1]) of[v] = true;
	seg[v] = tmp % mod;
}

void change(int v, int l, int r, int idx){
	if (idx < l || r <= idx) return;
	if (l + 1 == r){
		seg[v] = x[l];
		return;
	}
	int mid = (l + r) >> 1;
	change(v << 1, l, mid, idx);
	change(v << 1 | 1, mid, r, idx);
	ll tmp = 1ll * seg[v << 1] * seg[v << 1 | 1];
	if (tmp >= mod || of[v << 1] || of[v << 1 | 1]) of[v] = true;
	seg[v] = tmp % mod;
}

int find(int v, int l, int r, int tmp){
	if (!of[v] && 1ll * tmp * seg[v] < mod) return -1;
	if (l + 1 == r) return l;
	int mid = (l + r) >> 1;
	int res = find(v << 1 | 1, mid, r, tmp);
	if (res == -1){
		tmp *= seg[v << 1 | 1];
		res = find(v << 1, l, mid, tmp);
	}
	return res;
}

int get(int v, int l, int r, int ql, int qr){
	if (qr <= l || r <= ql) return 1;
	if (ql <= l && r <= qr) return seg[v];
	int mid = (l + r) >> 1;
	return 1ll * get(v << 1, l, mid, ql, qr) * get(v << 1 | 1, mid, r, ql, qr) % mod;
}

void build2(int v, int l, int r){
	if (l + 1 == r){
		dp[v][0] = x[l] * y[l];
		dp[v][1] = x[l];
		return;
	}
	int mid = (l + r) >> 1;
	build2(v << 1, l, mid);
	build2(v << 1 | 1, mid, r);
	dp[v][0] = max(dp[v << 1][0], dp[v << 1][1] * dp[v << 1 | 1][0]);
	dp[v][1] = dp[v << 1][1] * dp[v << 1 | 1][1];
}

void change2(int v, int l, int r, int idx){
	if (idx < l || r <= idx) return;
	if (l + 1 == r){
		dp[v][0] = x[l] * y[l];
		dp[v][1] = x[l];
		return;
	}
	int mid = (l + r) >> 1;
	change2(v << 1, l, mid, idx);
	change2(v << 1 | 1, mid, r, idx);
	dp[v][0] = max(dp[v << 1][0], dp[v << 1][1] * dp[v << 1 | 1][0]);
	dp[v][1] = dp[v << 1][1] * dp[v << 1 | 1][1];
}

pll get2(int v, int l, int r, int ql, int qr){
	if (qr <= l || r <= ql) return {1, 1};
	if (ql <= l && r <= qr) return MP(dp[v][0], dp[v][1]);
	int mid = (l + r) >> 1;
	pll a = get2(v << 1, l, mid, ql, qr);
	pll b = get2(v << 1 | 1, mid, r, ql, qr);
	return MP(max(a.F, a.S * b.F), a.S * b.S);
}

set<int> st;

int Calc(){
	int idx = find(1, 0, n, 1);
	if (idx == -1) idx = 0;
	int tmp = get(1, 0, n, 0, idx+1);
	ll tmp2 = max(y[idx], get2(1, 0, n+1, idx+1, n+1).F) % mod;
	return 1ll * tmp * tmp2 % mod;
}

int init(int N, int X[], int Y[]) {
	n = N;
	for (int i = 0; i < n; i++){
		x[i] = X[i];
		y[i] = Y[i];
		if (x[i] > 1) st.insert(i);
	}
	build(1, 0, n);
	build2(1, 0, n+1);
	return Calc();
}

int updateX(int pos, int val) {
	st.erase(pos);
	x[pos] = val;
	if (val > 1) st.insert(pos);
	change(1, 0, n, pos);
	change2(1, 0, n+1, pos);
	return Calc();
}

int updateY(int pos, int val) {
	y[pos] = val;
	change2(1, 0, n+1, pos);
	return Calc();
}

Compilation message

horses.cpp: In function 'int find(int, int, int, int)':
horses.cpp:68:7: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   68 |   tmp *= seg[v << 1 | 1];
      |   ~~~~^~~~~~~~~~~~~~~~~~
horses.cpp: In function 'int get(int, int, int, int, int)':
horses.cpp:76:38: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   76 |  if (ql <= l && r <= qr) return seg[v];
      |                                 ~~~~~^
horses.cpp:78:77: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   78 |  return 1ll * get(v << 1, l, mid, ql, qr) * get(v << 1 | 1, mid, r, ql, qr) % mod;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int Calc()':
horses.cpp:124:26: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  124 |  return 1ll * tmp * tmp2 % mod;
      |         ~~~~~~~~~~~~~~~~~^~~~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 3 ms 468 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 191 ms 61200 KB Output is correct
2 Correct 348 ms 61560 KB Output is correct
3 Correct 314 ms 61612 KB Output is correct
4 Correct 402 ms 61556 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 3 ms 468 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 50 ms 36980 KB Output is correct
34 Correct 52 ms 36900 KB Output is correct
35 Correct 161 ms 60748 KB Output is correct
36 Correct 168 ms 60676 KB Output is correct
37 Correct 51 ms 36808 KB Output is correct
38 Correct 90 ms 48684 KB Output is correct
39 Correct 39 ms 36784 KB Output is correct
40 Correct 273 ms 60684 KB Output is correct
41 Correct 44 ms 36784 KB Output is correct
42 Correct 38 ms 36760 KB Output is correct
43 Correct 137 ms 60616 KB Output is correct
44 Correct 139 ms 60700 KB Output is correct

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 190 ms 61188 KB Output is correct
34 Correct 359 ms 61660 KB Output is correct
35 Correct 301 ms 61620 KB Output is correct
36 Correct 394 ms 61644 KB Output is correct
37 Correct 59 ms 36992 KB Output is correct
38 Correct 58 ms 36964 KB Output is correct
39 Correct 162 ms 60748 KB Output is correct
40 Correct 160 ms 60672 KB Output is correct
41 Correct 47 ms 36876 KB Output is correct
42 Correct 89 ms 48720 KB Output is correct
43 Correct 39 ms 36664 KB Output is correct
44 Correct 306 ms 60680 KB Output is correct
45 Correct 35 ms 36788 KB Output is correct
46 Correct 38 ms 36784 KB Output is correct
47 Correct 138 ms 60660 KB Output is correct
48 Correct 137 ms 60676 KB Output is correct
49 Correct 175 ms 39260 KB Output is correct
50 Correct 172 ms 39152 KB Output is correct
51 Correct 242 ms 61624 KB Output is correct
52 Correct 229 ms 61572 KB Output is correct
53 Correct 155 ms 38740 KB Output is correct
54 Correct 192 ms 51740 KB Output is correct
55 Correct 105 ms 36812 KB Output is correct
56 Execution timed out 1582 ms 61092 KB Time limit exceeded
57 Halted 0 ms 0 KB -