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답안 #293092

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
293092 2020-09-07T16:10:49 Z luciocf 커다란 상품 (IOI17_prize) C++14
90 / 100
 96 ms 2048 KB 
#include <bits/stdc++.h>
#include "prize.h"

#define ff first
#define ss second

using namespace std;

typedef pair<int, int> pii;

const int maxn = 2e5+10;

pii val[maxn];

pii get(int i)
{
	vector<int> v = ask(i);

	return {v[0], v[1]};
}

int find_best(int n)
{
	for (int i = 0; i < n; i++)
		val[i] = {-1, -1};

	int ind = 0;
	int qtd = 0;

	for (int i = 0; i < min(n, 500); i++)
	{
		pii v = get(i);

		if (v.ff+v.ss == 0) return i;

		if (v.ff+v.ss >= qtd)
			qtd = v.ff+v.ss, ind = i;
	}

	int ant = ind;

	val[ind] = get(ind);

	for (int i = 1; i <= 500; i++)
	{
		int ini = ant+1, fim = n-1, ans;

		while (ini <= fim)
		{
			int mid = (ini+fim)/2;

			if (val[mid].ff == -1) val[mid] = get(mid);

			if (val[mid].ff+val[mid].ss != qtd)
			{
				if (val[mid].ff+val[mid].ss == 0) return mid;

				ans = mid, fim = mid-1;
			}
			else if (val[mid].ff-val[ind].ff-(i-1) > 0) fim = mid-1;
			else ini = mid+1;
		}

		ant = ans;
	}
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:66:1: warning: control reaches end of non-void function [-Wreturn-type]
   66 | }
      | ^
prize.cpp:46:7: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   46 |   int ini = ant+1, fim = n-1, ans;
      |       ^~~

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 1916 KB Output is correct
2 Correct 6 ms 1920 KB Output is correct
3 Correct 4 ms 1900 KB Output is correct
4 Correct 4 ms 1920 KB Output is correct
5 Correct 7 ms 1920 KB Output is correct
6 Correct 1 ms 1920 KB Output is correct
7 Correct 4 ms 1920 KB Output is correct
8 Correct 8 ms 1912 KB Output is correct
9 Correct 5 ms 1920 KB Output is correct
10 Correct 4 ms 1920 KB Output is correct

Subtask #2
70.0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 1920 KB Output is correct
2 Correct 6 ms 1920 KB Output is correct
3 Correct 4 ms 1920 KB Output is correct
4 Correct 8 ms 1912 KB Output is correct
5 Correct 6 ms 1920 KB Output is correct
6 Correct 1 ms 1912 KB Output is correct
7 Correct 5 ms 1920 KB Output is correct
8 Correct 4 ms 1912 KB Output is correct
9 Correct 5 ms 1920 KB Output is correct
10 Correct 8 ms 1824 KB Output is correct
11 Correct 10 ms 1920 KB Output is correct
12 Correct 8 ms 1920 KB Output is correct
13 Correct 14 ms 1920 KB Output is correct
14 Correct 8 ms 512 KB Output is correct
15 Correct 18 ms 1916 KB Output is correct
16 Partially correct 60 ms 1920 KB Partially correct - number of queries: 6986
17 Correct 4 ms 1912 KB Output is correct
18 Partially correct 77 ms 1920 KB Partially correct - number of queries: 8093
19 Correct 7 ms 1920 KB Output is correct
20 Correct 22 ms 1152 KB Output is correct
21 Correct 31 ms 1920 KB Output is correct
22 Correct 12 ms 1920 KB Output is correct
23 Correct 6 ms 1920 KB Output is correct
24 Correct 6 ms 1920 KB Output is correct
25 Correct 26 ms 1912 KB Output is correct
26 Correct 48 ms 1920 KB Output is correct
27 Correct 7 ms 1920 KB Output is correct
28 Partially correct 65 ms 1920 KB Partially correct - number of queries: 7685
29 Partially correct 61 ms 1912 KB Partially correct - number of queries: 5943
30 Partially correct 85 ms 1912 KB Partially correct - number of queries: 8032
31 Correct 7 ms 1920 KB Output is correct
32 Correct 8 ms 1920 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 33 ms 1920 KB Output is correct
35 Correct 10 ms 1920 KB Output is correct
36 Correct 28 ms 1920 KB Output is correct
37 Correct 7 ms 1920 KB Output is correct
38 Correct 4 ms 1896 KB Output is correct
39 Correct 41 ms 1912 KB Output is correct
40 Partially correct 78 ms 1920 KB Partially correct - number of queries: 6941
41 Partially correct 40 ms 1912 KB Partially correct - number of queries: 5066
42 Partially correct 31 ms 1912 KB Partially correct - number of queries: 5066
43 Correct 40 ms 1912 KB Output is correct
44 Correct 33 ms 1912 KB Output is correct
45 Correct 30 ms 1912 KB Output is correct
46 Correct 7 ms 2048 KB Output is correct
47 Correct 54 ms 1920 KB Output is correct
48 Partially correct 49 ms 1920 KB Partially correct - number of queries: 6133
49 Correct 11 ms 1912 KB Output is correct
50 Partially correct 66 ms 1896 KB Partially correct - number of queries: 8085
51 Correct 47 ms 1920 KB Output is correct
52 Correct 5 ms 1920 KB Output is correct
53 Correct 10 ms 1920 KB Output is correct
54 Correct 48 ms 1920 KB Output is correct
55 Correct 7 ms 1912 KB Output is correct
56 Partially correct 68 ms 1920 KB Partially correct - number of queries: 8093
57 Partially correct 55 ms 1920 KB Partially correct - number of queries: 6042
58 Partially correct 78 ms 1920 KB Partially correct - number of queries: 6110
59 Partially correct 68 ms 1920 KB Partially correct - number of queries: 5062
60 Correct 45 ms 1896 KB Output is correct
61 Correct 10 ms 1920 KB Output is correct
62 Correct 7 ms 1920 KB Output is correct
63 Correct 8 ms 1920 KB Output is correct
64 Correct 8 ms 1920 KB Output is correct
65 Correct 7 ms 1920 KB Output is correct
66 Correct 15 ms 1912 KB Output is correct
67 Correct 7 ms 1920 KB Output is correct
68 Correct 7 ms 1920 KB Output is correct
69 Correct 12 ms 1916 KB Output is correct
70 Correct 8 ms 1920 KB Output is correct
71 Partially correct 77 ms 1920 KB Partially correct - number of queries: 8277
72 Correct 7 ms 1920 KB Output is correct
73 Partially correct 66 ms 1920 KB Partially correct - number of queries: 8149
74 Partially correct 76 ms 1920 KB Partially correct - number of queries: 8218
75 Correct 8 ms 1920 KB Output is correct
76 Partially correct 82 ms 1920 KB Partially correct - number of queries: 7126
77 Partially correct 77 ms 1920 KB Partially correct - number of queries: 8124
78 Correct 11 ms 1920 KB Output is correct
79 Correct 39 ms 1920 KB Output is correct
80 Partially correct 45 ms 1920 KB Partially correct - number of queries: 8118
81 Partially correct 93 ms 1920 KB Partially correct - number of queries: 7779
82 Partially correct 94 ms 1920 KB Partially correct - number of queries: 8067
83 Correct 8 ms 1920 KB Output is correct
84 Partially correct 75 ms 1920 KB Partially correct - number of queries: 6711
85 Partially correct 96 ms 1920 KB Partially correct - number of queries: 8088
86 Correct 6 ms 1920 KB Output is correct
87 Correct 7 ms 1920 KB Output is correct
88 Correct 7 ms 1920 KB Output is correct
89 Correct 8 ms 1920 KB Output is correct
90 Correct 8 ms 1908 KB Output is correct
91 Correct 4 ms 1912 KB Output is correct
92 Correct 7 ms 1920 KB Output is correct
93 Correct 12 ms 1920 KB Output is correct
94 Correct 6 ms 1920 KB Output is correct
95 Correct 8 ms 1920 KB Output is correct
96 Correct 11 ms 1920 KB Output is correct
97 Correct 6 ms 1920 KB Output is correct