답안 #268697

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
268697 2020-08-16T18:41:40 Z Plurm 커다란 상품 (IOI17_prize) C++11
100 / 100
55 ms 5368 KB
#include "prize.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> memoiz[200005];
int key = -1;
vector<int> customAsk(int x){
	// Memoized version of ask
	if(memoiz[x].empty()) memoiz[x] = ask(x);
	key = max(key, memoiz[x][0] + memoiz[x][1]);
	return memoiz[x];
}

int solve(int l, int r, int offsL = 0, int offsR = 0){
	if(l > r) return -1;
	if(l == r) return customAsk(l)[0] + customAsk(l)[1] == 0 ? l : -1;
	int m = (l+r)/2;
	vector<int> res = customAsk(m);
	while(res[0] + res[1] != key){
		if(res[0] + res[1] == 0) return m;
		if(m == r) break;
		m++;
		res = customAsk(m);
	}
	if(m == r){
		m = (l+r)/2;
		while(res[0] + res[1] != key){
			if(res[0] + res[1] == 0) return m;
			if(m == l) return -1;
			m--;
			res = customAsk(m);
		}
	}
	int left = -1;
	if(res[0] - offsL > 0) left = solve(l, m-1, offsL, res[1]);
	if(left != -1) return left;
	if(res[1] - offsR > 0) return solve(m+1, r, res[0], offsR);
	return -1;
}
void popularPreprocess(int l, int r, int& left, int dep = 0){
	if(l >= r) return;
	if(left <= 0) return;
	int m = (l+r)/2;
	customAsk(m);
	left--;
	popularPreprocess(l, m-1, left);
	if(dep > 3)
	popularPreprocess(m+1, r, left);
}
int find_best(int n) {
	if(n < 5000){
		for(int i = 0; i < n; i++) {
			vector<int> res = customAsk(i);
			if(res[0] + res[1] == 0)
				return i;
		}
	}
	int cntr = sqrt(n);
	popularPreprocess(0, n-1, cntr);
	int ans = solve(0, n-1);
	for(int i = 0; i < n; i++) memoiz[i].clear();
	return ans;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 5 ms 4992 KB Output is correct
6 Correct 5 ms 5108 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5064 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 5112 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 6 ms 4992 KB Output is correct
12 Correct 4 ms 5024 KB Output is correct
13 Correct 11 ms 4992 KB Output is correct
14 Correct 6 ms 4992 KB Output is correct
15 Correct 11 ms 4992 KB Output is correct
16 Correct 41 ms 5184 KB Output is correct
17 Correct 5 ms 4992 KB Output is correct
18 Correct 55 ms 5240 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 18 ms 4992 KB Output is correct
21 Correct 21 ms 5088 KB Output is correct
22 Correct 7 ms 4992 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 4 ms 4992 KB Output is correct
25 Correct 27 ms 5112 KB Output is correct
26 Correct 25 ms 5368 KB Output is correct
27 Correct 5 ms 4992 KB Output is correct
28 Correct 26 ms 5176 KB Output is correct
29 Correct 20 ms 5160 KB Output is correct
30 Correct 39 ms 5112 KB Output is correct
31 Correct 4 ms 5120 KB Output is correct
32 Correct 8 ms 5120 KB Output is correct
33 Correct 4 ms 4992 KB Output is correct
34 Correct 20 ms 4992 KB Output is correct
35 Correct 5 ms 4992 KB Output is correct
36 Correct 12 ms 4992 KB Output is correct
37 Correct 5 ms 4992 KB Output is correct
38 Correct 4 ms 4992 KB Output is correct
39 Correct 21 ms 5056 KB Output is correct
40 Correct 49 ms 5112 KB Output is correct
41 Correct 33 ms 5112 KB Output is correct
42 Correct 25 ms 5112 KB Output is correct
43 Correct 21 ms 5140 KB Output is correct
44 Correct 25 ms 5112 KB Output is correct
45 Correct 17 ms 5116 KB Output is correct
46 Correct 4 ms 4992 KB Output is correct
47 Correct 15 ms 5152 KB Output is correct
48 Correct 35 ms 5112 KB Output is correct
49 Correct 7 ms 4992 KB Output is correct
50 Correct 45 ms 5156 KB Output is correct
51 Correct 14 ms 5164 KB Output is correct
52 Correct 5 ms 4992 KB Output is correct
53 Correct 5 ms 4992 KB Output is correct
54 Correct 26 ms 5112 KB Output is correct
55 Correct 5 ms 4992 KB Output is correct
56 Correct 46 ms 5112 KB Output is correct
57 Correct 30 ms 5112 KB Output is correct
58 Correct 36 ms 5088 KB Output is correct
59 Correct 27 ms 5112 KB Output is correct
60 Correct 24 ms 5144 KB Output is correct
61 Correct 6 ms 4992 KB Output is correct
62 Correct 4 ms 4992 KB Output is correct
63 Correct 5 ms 4992 KB Output is correct
64 Correct 4 ms 4992 KB Output is correct
65 Correct 5 ms 4992 KB Output is correct
66 Correct 8 ms 4992 KB Output is correct
67 Correct 8 ms 4992 KB Output is correct
68 Correct 5 ms 4992 KB Output is correct
69 Correct 7 ms 4992 KB Output is correct
70 Correct 8 ms 5060 KB Output is correct
71 Correct 40 ms 5112 KB Output is correct
72 Correct 8 ms 4992 KB Output is correct
73 Correct 50 ms 5112 KB Output is correct
74 Correct 36 ms 5252 KB Output is correct
75 Correct 6 ms 4992 KB Output is correct
76 Correct 44 ms 5112 KB Output is correct
77 Correct 43 ms 5120 KB Output is correct
78 Correct 9 ms 4992 KB Output is correct
79 Correct 26 ms 5112 KB Output is correct
80 Correct 44 ms 5116 KB Output is correct
81 Correct 43 ms 5300 KB Output is correct
82 Correct 47 ms 5112 KB Output is correct
83 Correct 5 ms 4992 KB Output is correct
84 Correct 40 ms 5120 KB Output is correct
85 Correct 50 ms 5240 KB Output is correct
86 Correct 9 ms 4992 KB Output is correct
87 Correct 5 ms 4992 KB Output is correct
88 Correct 9 ms 5080 KB Output is correct
89 Correct 9 ms 4992 KB Output is correct
90 Correct 5 ms 4992 KB Output is correct
91 Correct 8 ms 4992 KB Output is correct
92 Correct 8 ms 4992 KB Output is correct
93 Correct 8 ms 4992 KB Output is correct
94 Correct 7 ms 4992 KB Output is correct
95 Correct 9 ms 4992 KB Output is correct
96 Correct 7 ms 4992 KB Output is correct
97 Correct 4 ms 4992 KB Output is correct