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답안 #1013189

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1013189 2024-07-03T09:28:02 Z jcelin 커다란 상품 (IOI17_prize) C++14
100 / 100
 38 ms 2260 KB 
#include<bits/stdc++.h>
#include "prize.h"
using namespace std;

typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef long long ll;
#define X first
#define Y second
#define PB push_back
#define PPB pop_back
#define all(x) (x).begin(), (x).end() 

const int MAXN = 2e5 + 7;
mt19937 rng(time(0));
vi mog;
int svi;
ii q[MAXN];

void as(int x){
	if(q[x].X == -1){
		vi ret = ask(x);
		q[x] = {ret[0], ret[1]};
	}
}

int l(int x){
	as(x);
	return q[x].X;
}

int r(int x){
	as(x);
	return q[x].Y;
}

void rek(int lo, int hi){
	if(lo > hi) return;
	
	if(l(lo) + r(lo) < svi){
		mog.PB(lo);
		rek(lo + 1, hi);
		return;
	}
	
	if(l(hi) + r(hi) < svi){
		mog.PB(hi);
		rek(lo, hi - 1);
		return;
	}
	
	if(l(lo) == l(hi) or lo + 1 == hi) return;
	int mid = (lo + hi) / 2;
	rek(lo, mid);
	rek(mid, hi);
}

int find_best(int n){
	fill(q, q + n, (ii){-1, -1});
	
	for(int i=0; i<100; i++){
		int x = rng() % n;
		svi = max(svi, l(x) + r(x));
	}
	rek(0, n-1);
	
	for(auto &x : mog) if(l(x) + r(x) == 0) return x;
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:69:1: warning: control reaches end of non-void function [-Wreturn-type]
   69 | }
      | ^

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1880 KB Output is correct
2 Correct 2 ms 1880 KB Output is correct
3 Correct 1 ms 1880 KB Output is correct
4 Correct 1 ms 1880 KB Output is correct
5 Correct 2 ms 1880 KB Output is correct
6 Correct 2 ms 1976 KB Output is correct
7 Correct 2 ms 1880 KB Output is correct
8 Correct 1 ms 1880 KB Output is correct
9 Correct 1 ms 1880 KB Output is correct
10 Correct 1 ms 1880 KB Output is correct

Subtask #2
80.0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1880 KB Output is correct
2 Correct 2 ms 1880 KB Output is correct
3 Correct 1 ms 1880 KB Output is correct
4 Correct 1 ms 1880 KB Output is correct
5 Correct 2 ms 1880 KB Output is correct
6 Correct 1 ms 1880 KB Output is correct
7 Correct 1 ms 1972 KB Output is correct
8 Correct 2 ms 1880 KB Output is correct
9 Correct 2 ms 1880 KB Output is correct
10 Correct 1 ms 1880 KB Output is correct
11 Correct 3 ms 1880 KB Output is correct
12 Correct 3 ms 1880 KB Output is correct
13 Correct 3 ms 1880 KB Output is correct
14 Correct 5 ms 600 KB Output is correct
15 Correct 28 ms 2136 KB Output is correct
16 Correct 20 ms 1880 KB Output is correct
17 Correct 21 ms 1880 KB Output is correct
18 Correct 18 ms 1880 KB Output is correct
19 Correct 28 ms 1880 KB Output is correct
20 Correct 20 ms 1488 KB Output is correct
21 Correct 21 ms 2012 KB Output is correct
22 Correct 21 ms 1880 KB Output is correct
23 Correct 2 ms 1880 KB Output is correct
24 Correct 4 ms 1880 KB Output is correct
25 Correct 26 ms 2136 KB Output is correct
26 Correct 19 ms 1880 KB Output is correct
27 Correct 2 ms 1880 KB Output is correct
28 Correct 19 ms 2136 KB Output is correct
29 Correct 16 ms 1880 KB Output is correct
30 Correct 19 ms 1880 KB Output is correct
31 Correct 31 ms 2136 KB Output is correct
32 Correct 3 ms 1880 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 21 ms 2012 KB Output is correct
35 Correct 2 ms 1880 KB Output is correct
36 Correct 22 ms 1880 KB Output is correct
37 Correct 3 ms 1880 KB Output is correct
38 Correct 2 ms 1880 KB Output is correct
39 Correct 25 ms 2136 KB Output is correct
40 Correct 22 ms 1988 KB Output is correct
41 Correct 18 ms 1880 KB Output is correct
42 Correct 15 ms 1876 KB Output is correct
43 Correct 26 ms 1880 KB Output is correct
44 Correct 28 ms 1880 KB Output is correct
45 Correct 28 ms 1880 KB Output is correct
46 Correct 24 ms 1880 KB Output is correct
47 Correct 17 ms 1880 KB Output is correct
48 Correct 14 ms 1880 KB Output is correct
49 Correct 31 ms 2004 KB Output is correct
50 Correct 31 ms 1880 KB Output is correct
51 Correct 23 ms 1880 KB Output is correct
52 Correct 16 ms 2128 KB Output is correct
53 Correct 2 ms 1880 KB Output is correct
54 Correct 26 ms 2004 KB Output is correct
55 Correct 38 ms 2136 KB Output is correct
56 Correct 23 ms 1880 KB Output is correct
57 Correct 16 ms 2128 KB Output is correct
58 Correct 16 ms 1880 KB Output is correct
59 Correct 19 ms 1880 KB Output is correct
60 Correct 14 ms 1876 KB Output is correct
61 Correct 2 ms 1880 KB Output is correct
62 Correct 2 ms 1880 KB Output is correct
63 Correct 3 ms 1880 KB Output is correct
64 Correct 2 ms 1880 KB Output is correct
65 Correct 2 ms 1880 KB Output is correct
66 Correct 4 ms 2008 KB Output is correct
67 Correct 5 ms 2004 KB Output is correct
68 Correct 3 ms 1880 KB Output is correct
69 Correct 4 ms 2136 KB Output is correct
70 Correct 2 ms 1880 KB Output is correct
71 Correct 29 ms 1988 KB Output is correct
72 Correct 4 ms 1880 KB Output is correct
73 Correct 25 ms 2136 KB Output is correct
74 Correct 22 ms 2128 KB Output is correct
75 Correct 2 ms 1880 KB Output is correct
76 Correct 17 ms 1880 KB Output is correct
77 Correct 12 ms 1880 KB Output is correct
78 Correct 3 ms 1880 KB Output is correct
79 Correct 8 ms 1880 KB Output is correct
80 Correct 18 ms 1880 KB Output is correct
81 Correct 22 ms 2136 KB Output is correct
82 Correct 22 ms 1880 KB Output is correct
83 Correct 2 ms 1880 KB Output is correct
84 Correct 16 ms 1880 KB Output is correct
85 Correct 20 ms 2136 KB Output is correct
86 Correct 10 ms 2260 KB Output is correct
87 Correct 3 ms 1880 KB Output is correct
88 Correct 5 ms 2132 KB Output is correct
89 Correct 8 ms 1880 KB Output is correct
90 Correct 2 ms 1880 KB Output is correct
91 Correct 7 ms 1880 KB Output is correct
92 Correct 2 ms 1880 KB Output is correct
93 Correct 3 ms 1880 KB Output is correct
94 Correct 3 ms 1880 KB Output is correct
95 Correct 2 ms 1880 KB Output is correct
96 Correct 2 ms 1880 KB Output is correct
97 Correct 1 ms 1880 KB Output is correct