답안 #785350

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
785350	2023-07-17T08:38:46 Z	NothingXD	말 (IOI15_horses)	C++14	77 / 100	1500 ms	29976 KB

horses

#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 dp[maxn << 2][2];
bool of[maxn << 2];

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

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;
	int lc = v << 1;
	int rc = lc | 1;
	build2(lc, l, mid);
	build2(rc, mid, r);
	dp[v][0] = max(dp[lc][0], dp[lc][1] * dp[rc][0]);
	dp[v][1] = dp[lc][1] * dp[rc][1];
	if (dp[v][1] >= mod || of[lc] || of[rc]) of[v] = true;
	dp[v][1] %= mod;
}

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

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;
	int lc = v << 1;
	int rc = lc | 1;
	pll a = get2(lc, l, mid, ql, qr);
	pll b = get2(rc, mid, r, ql, qr);
	return MP(max(a.F, a.S * b.F), a.S * b.S % mod);
}

int Calc(){
	int idx = find(1, 0, n, 1);
	if (idx == -1) idx = 0;
	int tmp = get2(1, 0, n, 0, idx+1).S;
	ll tmp2 = max(y[idx], get2(1, 0, n, idx+1, n).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];
	}
	build2(1, 0, n);
	return Calc();
}

int updateX(int pos, int val) {
	x[pos] = val;
	change2(1, 0, n, pos);
	return Calc();
}

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

Compilation message

horses.cpp: In function 'int find(int, int, int, int)':
horses.cpp:42:7: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   42 |   tmp *= dp[rc][1];
      |   ~~~~^~~~~~~~~~~~
horses.cpp: In function 'int Calc()':
horses.cpp:22:11: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   22 | #define S second
      |           ^
horses.cpp:96:36: note: in expansion of macro 'S'
   96 |  int tmp = get2(1, 0, n, 0, idx+1).S;
      |                                    ^
horses.cpp:98:26: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   98 |  return 1ll * tmp * tmp2 % mod;
      |         ~~~~~~~~~~~~~~~~~^~~~~

Subtask #1

17.0 / 17.0

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

Subtask #2

17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 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	212 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	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 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	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	4 ms	340 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	97 ms	29380 KB	Output is correct
2	Correct	161 ms	29964 KB	Output is correct
3	Correct	139 ms	29912 KB	Output is correct
4	Correct	132 ms	29972 KB	Output is correct

Subtask #4

23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 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	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	4 ms	340 KB	Output is correct
31	Correct	1 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	44 ms	28628 KB	Output is correct
34	Correct	48 ms	28660 KB	Output is correct
35	Correct	62 ms	29012 KB	Output is correct
36	Correct	61 ms	29064 KB	Output is correct
37	Correct	32 ms	28500 KB	Output is correct
38	Correct	36 ms	28620 KB	Output is correct
39	Correct	28 ms	28408 KB	Output is correct
40	Correct	383 ms	29080 KB	Output is correct
41	Correct	34 ms	28452 KB	Output is correct
42	Correct	32 ms	28500 KB	Output is correct
43	Correct	38 ms	28936 KB	Output is correct
44	Correct	39 ms	28904 KB	Output is correct

Subtask #5

0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	212 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	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	340 KB	Output is correct
22	Correct	1 ms	212 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	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	4 ms	340 KB	Output is correct
31	Correct	1 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	91 ms	29420 KB	Output is correct
34	Correct	149 ms	29936 KB	Output is correct
35	Correct	140 ms	29956 KB	Output is correct
36	Correct	137 ms	29968 KB	Output is correct
37	Correct	39 ms	28616 KB	Output is correct
38	Correct	48 ms	28620 KB	Output is correct
39	Correct	69 ms	28992 KB	Output is correct
40	Correct	60 ms	28964 KB	Output is correct
41	Correct	37 ms	28496 KB	Output is correct
42	Correct	34 ms	28472 KB	Output is correct
43	Correct	28 ms	28492 KB	Output is correct
44	Correct	393 ms	29084 KB	Output is correct
45	Correct	28 ms	28504 KB	Output is correct
46	Correct	29 ms	28592 KB	Output is correct
47	Correct	47 ms	28964 KB	Output is correct
48	Correct	39 ms	28956 KB	Output is correct
49	Correct	130 ms	29900 KB	Output is correct
50	Correct	132 ms	29896 KB	Output is correct
51	Correct	132 ms	29928 KB	Output is correct
52	Correct	122 ms	29976 KB	Output is correct
53	Correct	120 ms	29352 KB	Output is correct
54	Correct	97 ms	29392 KB	Output is correct
55	Correct	77 ms	28620 KB	Output is correct
56	Execution timed out	1586 ms	29244 KB	Time limit exceeded
57	Halted	0 ms	0 KB	-