oj.uz

Submission #1000405

# Submission time Handle Problem Language Result Execution time Memory
1000405 2024-06-17T12:37:08 Z vjudge1 The Big Prize (IOI17_prize) C++17
100 / 100
 30 ms 5684 KB 
#include"prize.h"
using namespace std;
int tot,now;vector<int>a[200009],b;
inline int sum(int i)
{
	if(a[i].empty())a[i]=ask(i);
	return a[i][0]+a[i][1];
}
inline int lft(int i)
{
	if(a[i].empty())a[i]=ask(i);
	return a[i][0];
}
inline int dfs(int l,int r)
{
	if(l>r)return-1;
	if(!sum(r))return r;
	if(sum(r)^tot)
	{
		int x=dfs(l,r-1);
		if(x>>31)++now;
		return x;
	}
	if(lft(r)==now)return-1;
	int mid=l+r>>1,x=dfs(l,mid);
	if(x>>31)x=dfs(mid+1,r);
	return x;
}
int find_best(int n)
{
	b.emplace_back(-1);
	for(int i=0;i<n&&i<500;++i)b.emplace_back(b.back()+
		(n-1-b.back()-1)/(500-i)+1);
	for(int i=1;i<b.size();++i)if(!sum(b[i]))return b[i];
	for(int i=1;i<b.size();++i)if(sum(b[i])>tot)tot=sum(b[i]);
	for(int i=1;i<b.size();++i)
	{
		int x=dfs(b[i-1]+1,b[i]);
		if(~x)return x;
	}
}

Compilation message

prize.cpp: In function 'int dfs(int, int)':
prize.cpp:25:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   25 |  int mid=l+r>>1,x=dfs(l,mid);
      |          ~^~
prize.cpp: In function 'int find_best(int)':
prize.cpp:34:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |  for(int i=1;i<b.size();++i)if(!sum(b[i]))return b[i];
      |              ~^~~~~~~~~
prize.cpp:35:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |  for(int i=1;i<b.size();++i)if(sum(b[i])>tot)tot=sum(b[i]);
      |              ~^~~~~~~~~
prize.cpp:36:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |  for(int i=1;i<b.size();++i)
      |              ~^~~~~~~~~
prize.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type]
   41 | }
      | ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4952 KB Output is correct
2 Correct 4 ms 5144 KB Output is correct
3 Correct 3 ms 5208 KB Output is correct
4 Correct 3 ms 5140 KB Output is correct
5 Correct 3 ms 4952 KB Output is correct
6 Correct 4 ms 5132 KB Output is correct
7 Correct 4 ms 5140 KB Output is correct
8 Correct 4 ms 4952 KB Output is correct
9 Correct 3 ms 4952 KB Output is correct
10 Correct 6 ms 5144 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 3 ms 4952 KB Output is correct
3 Correct 3 ms 4952 KB Output is correct
4 Correct 3 ms 5204 KB Output is correct
5 Correct 4 ms 4952 KB Output is correct
6 Correct 5 ms 5148 KB Output is correct
7 Correct 5 ms 4952 KB Output is correct
8 Correct 4 ms 5124 KB Output is correct
9 Correct 2 ms 4952 KB Output is correct
10 Correct 3 ms 4952 KB Output is correct
11 Correct 4 ms 5156 KB Output is correct
12 Correct 5 ms 4952 KB Output is correct
13 Correct 7 ms 5128 KB Output is correct
14 Correct 4 ms 4952 KB Output is correct
15 Correct 6 ms 5408 KB Output is correct
16 Correct 23 ms 5420 KB Output is correct
17 Correct 4 ms 5128 KB Output is correct
18 Correct 25 ms 5384 KB Output is correct
19 Correct 5 ms 5128 KB Output is correct
20 Correct 11 ms 5208 KB Output is correct
21 Correct 11 ms 4952 KB Output is correct
22 Correct 4 ms 4952 KB Output is correct
23 Correct 3 ms 4952 KB Output is correct
24 Correct 3 ms 4988 KB Output is correct
25 Correct 15 ms 5408 KB Output is correct
26 Correct 14 ms 5204 KB Output is correct
27 Correct 5 ms 4952 KB Output is correct
28 Correct 28 ms 5200 KB Output is correct
29 Correct 15 ms 5180 KB Output is correct
30 Correct 24 ms 5200 KB Output is correct
31 Correct 6 ms 4952 KB Output is correct
32 Correct 5 ms 4952 KB Output is correct
33 Correct 2 ms 4952 KB Output is correct
34 Correct 15 ms 5164 KB Output is correct
35 Correct 5 ms 4952 KB Output is correct
36 Correct 7 ms 4952 KB Output is correct
37 Correct 4 ms 4952 KB Output is correct
38 Correct 3 ms 5156 KB Output is correct
39 Correct 14 ms 4952 KB Output is correct
40 Correct 27 ms 5200 KB Output is correct
41 Correct 14 ms 5208 KB Output is correct
42 Correct 20 ms 5200 KB Output is correct
43 Correct 11 ms 5208 KB Output is correct
44 Correct 14 ms 5200 KB Output is correct
45 Correct 8 ms 5176 KB Output is correct
46 Correct 3 ms 5400 KB Output is correct
47 Correct 11 ms 5684 KB Output is correct
48 Correct 26 ms 5208 KB Output is correct
49 Correct 6 ms 5156 KB Output is correct
50 Correct 23 ms 5200 KB Output is correct
51 Correct 10 ms 5144 KB Output is correct
52 Correct 4 ms 4952 KB Output is correct
53 Correct 5 ms 4952 KB Output is correct
54 Correct 11 ms 5408 KB Output is correct
55 Correct 4 ms 4952 KB Output is correct
56 Correct 30 ms 5452 KB Output is correct
57 Correct 15 ms 5176 KB Output is correct
58 Correct 14 ms 5220 KB Output is correct
59 Correct 14 ms 5208 KB Output is correct
60 Correct 15 ms 5208 KB Output is correct
61 Correct 6 ms 4952 KB Output is correct
62 Correct 6 ms 4952 KB Output is correct
63 Correct 5 ms 5208 KB Output is correct
64 Correct 6 ms 5144 KB Output is correct
65 Correct 4 ms 5140 KB Output is correct
66 Correct 5 ms 4952 KB Output is correct
67 Correct 4 ms 4952 KB Output is correct
68 Correct 8 ms 4952 KB Output is correct
69 Correct 7 ms 4952 KB Output is correct
70 Correct 6 ms 5144 KB Output is correct
71 Correct 17 ms 5236 KB Output is correct
72 Correct 7 ms 4952 KB Output is correct
73 Correct 23 ms 5208 KB Output is correct
74 Correct 26 ms 5432 KB Output is correct
75 Correct 7 ms 5208 KB Output is correct
76 Correct 20 ms 5464 KB Output is correct
77 Correct 22 ms 5460 KB Output is correct
78 Correct 6 ms 4952 KB Output is correct
79 Correct 11 ms 5208 KB Output is correct
80 Correct 22 ms 5236 KB Output is correct
81 Correct 21 ms 5468 KB Output is correct
82 Correct 24 ms 5200 KB Output is correct
83 Correct 8 ms 5140 KB Output is correct
84 Correct 19 ms 5172 KB Output is correct
85 Correct 27 ms 5448 KB Output is correct
86 Correct 8 ms 5216 KB Output is correct
87 Correct 3 ms 4952 KB Output is correct
88 Correct 5 ms 4952 KB Output is correct
89 Correct 7 ms 5220 KB Output is correct
90 Correct 5 ms 4952 KB Output is correct
91 Correct 6 ms 4952 KB Output is correct
92 Correct 9 ms 4952 KB Output is correct
93 Correct 7 ms 4952 KB Output is correct
94 Correct 10 ms 4952 KB Output is correct
95 Correct 5 ms 4952 KB Output is correct
96 Correct 6 ms 5164 KB Output is correct
97 Correct 10 ms 4952 KB Output is correct