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답안 #832406

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
832406 2023-08-21T10:03:16 Z MadokaMagicaFan 커다란 상품 (IOI17_prize) C++14
98.58 / 100
 53 ms 3612 KB 
#include "bits/stdc++.h"
using namespace std;
using ll = long long;
#define sz(v) ((int)v.size())
#define pb push_back
#ifdef ONPC
vector<int> p;
vector<int> ask(int x);
#else
#include "prize.h"
#endif
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int lv[1000];
int al[200005], ar[200005], a[200005];

void g(int x) {
	if (a[x]) return;
	a[x] = 1;
	auto u = ask(x);
	al[x] = u[0];
	ar[x] = u[1];
	lv[al[x]] = min(lv[al[x]], x);
}


int find_best(int n) {
	for (int i = 0; i < 1000; ++i)
		lv[i] = n+2;
	vector<int> rs(n);
	iota(rs.begin(), rs.end(), 0);
	shuffle(rs.begin(), rs.end(), rng);
	int cn = 0;
	for (int i = 0; i < min(n,450); ++i) {
		g(rs[i]);
		cn = max(cn, al[rs[i]] + ar[rs[i]]);
	}
	

	vector<int> sp;
	for (int i = 1; i <= cn; ++i) {
		int l = (i > 1) ? sp.back()+1 : 0;
		int r = n;
		for (int j = i; j <= cn; ++j)
			r = min(r, lv[j]);

		while (l < r) {
			int m = (l+r)/2;
			g(m);
			if (al[m] + ar[m] < cn || al[m] >= i)
				r = m;
			else
				l = m+1;
		}

		sp.pb(l);
	}

	assert(sz(sp) == cn);

	for (auto x : sp) {
		g(x); if (al[x] == 0 && ar[x] == 0) return x;
	}

	return -1;
}


#ifdef ONPC
vector<int> ask(int x) {
	vector<int> r(2,0);
	for (int i = 0; i < x; ++i) if (p[i] < p[x]) ++r[0];
	for (int i = x+1; i < sz(p); ++i) if (p[i] < p[x]) ++r[1];
	return r;
}

int main() {
	int n;
	cin >>n; p.resize(n);
	for (int i = 0; i < n; ++i)
		cin >> p[i];

	cout << find_best(n) << endl;
}
#endif

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 3144 KB Output is correct
2 Correct 7 ms 3188 KB Output is correct
3 Correct 7 ms 3200 KB Output is correct
4 Correct 9 ms 3116 KB Output is correct
5 Correct 7 ms 3116 KB Output is correct
6 Correct 9 ms 3112 KB Output is correct
7 Correct 9 ms 3024 KB Output is correct
8 Correct 7 ms 3236 KB Output is correct
9 Correct 11 ms 3120 KB Output is correct
10 Correct 10 ms 3152 KB Output is correct

Subtask #2
78.58 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 3140 KB Output is correct
2 Correct 9 ms 3136 KB Output is correct
3 Correct 11 ms 3228 KB Output is correct
4 Correct 7 ms 3248 KB Output is correct
5 Correct 9 ms 3248 KB Output is correct
6 Correct 7 ms 3224 KB Output is correct
7 Correct 7 ms 3160 KB Output is correct
8 Correct 10 ms 3108 KB Output is correct
9 Correct 7 ms 3188 KB Output is correct
10 Correct 9 ms 3152 KB Output is correct
11 Correct 14 ms 3248 KB Output is correct
12 Correct 10 ms 3304 KB Output is correct
13 Correct 13 ms 3244 KB Output is correct
14 Correct 9 ms 592 KB Output is correct
15 Correct 37 ms 3400 KB Output is correct
16 Correct 22 ms 3428 KB Output is correct
17 Correct 31 ms 3332 KB Output is correct
18 Correct 22 ms 3432 KB Output is correct
19 Correct 39 ms 3412 KB Output is correct
20 Correct 32 ms 1864 KB Output is correct
21 Correct 46 ms 3340 KB Output is correct
22 Correct 29 ms 3408 KB Output is correct
23 Correct 10 ms 3216 KB Output is correct
24 Correct 8 ms 3284 KB Output is correct
25 Correct 46 ms 3404 KB Output is correct
26 Correct 45 ms 3332 KB Output is correct
27 Correct 11 ms 3144 KB Output is correct
28 Correct 21 ms 3436 KB Output is correct
29 Correct 31 ms 3400 KB Output is correct
30 Correct 43 ms 3500 KB Output is correct
31 Correct 29 ms 3372 KB Output is correct
32 Correct 8 ms 3252 KB Output is correct
33 Correct 1 ms 208 KB Output is correct
34 Correct 29 ms 3388 KB Output is correct
35 Correct 11 ms 3280 KB Output is correct
36 Correct 47 ms 3404 KB Output is correct
37 Correct 13 ms 3144 KB Output is correct
38 Correct 7 ms 3256 KB Output is correct
39 Correct 29 ms 3440 KB Output is correct
40 Correct 34 ms 3420 KB Output is correct
41 Correct 45 ms 3420 KB Output is correct
42 Correct 29 ms 3392 KB Output is correct
43 Correct 47 ms 3336 KB Output is correct
44 Correct 38 ms 3408 KB Output is correct
45 Correct 38 ms 3612 KB Output is correct
46 Correct 48 ms 3368 KB Output is correct
47 Correct 46 ms 3428 KB Output is correct
48 Correct 47 ms 3368 KB Output is correct
49 Correct 37 ms 3436 KB Output is correct
50 Correct 46 ms 3340 KB Output is correct
51 Correct 26 ms 3440 KB Output is correct
52 Correct 48 ms 3368 KB Output is correct
53 Correct 8 ms 3256 KB Output is correct
54 Correct 40 ms 3412 KB Output is correct
55 Correct 22 ms 3452 KB Output is correct
56 Correct 44 ms 3400 KB Output is correct
57 Correct 36 ms 3380 KB Output is correct
58 Correct 24 ms 3460 KB Output is correct
59 Correct 46 ms 3344 KB Output is correct
60 Correct 33 ms 3432 KB Output is correct
61 Correct 8 ms 3280 KB Output is correct
62 Correct 8 ms 3248 KB Output is correct
63 Correct 10 ms 3152 KB Output is correct
64 Correct 10 ms 3144 KB Output is correct
65 Correct 10 ms 3164 KB Output is correct
66 Correct 16 ms 3112 KB Output is correct
67 Correct 13 ms 3216 KB Output is correct
68 Correct 13 ms 3152 KB Output is correct
69 Correct 9 ms 3220 KB Output is correct
70 Correct 14 ms 3332 KB Output is correct
71 Partially correct 37 ms 3404 KB Partially correct - number of queries: 5142
72 Correct 13 ms 3308 KB Output is correct
73 Partially correct 48 ms 3316 KB Partially correct - number of queries: 5075
74 Partially correct 41 ms 3444 KB Partially correct - number of queries: 5122
75 Correct 12 ms 3232 KB Output is correct
76 Correct 33 ms 3384 KB Output is correct
77 Partially correct 50 ms 3412 KB Partially correct - number of queries: 5023
78 Correct 12 ms 3396 KB Output is correct
79 Correct 15 ms 3412 KB Output is correct
80 Partially correct 36 ms 3352 KB Partially correct - number of queries: 5003
81 Partially correct 51 ms 3400 KB Partially correct - number of queries: 5006
82 Correct 49 ms 3396 KB Output is correct
83 Correct 10 ms 3168 KB Output is correct
84 Correct 31 ms 3352 KB Output is correct
85 Partially correct 43 ms 3376 KB Partially correct - number of queries: 5013
86 Correct 35 ms 3364 KB Output is correct
87 Correct 11 ms 3280 KB Output is correct
88 Correct 35 ms 3380 KB Output is correct
89 Correct 45 ms 3316 KB Output is correct
90 Correct 9 ms 3144 KB Output is correct
91 Correct 24 ms 3412 KB Output is correct
92 Correct 35 ms 3420 KB Output is correct
93 Correct 53 ms 3352 KB Output is correct
94 Correct 44 ms 3380 KB Output is correct
95 Correct 21 ms 3420 KB Output is correct
96 Correct 27 ms 3516 KB Output is correct
97 Correct 51 ms 3332 KB Output is correct