oj.uz

Submission #339655

# Submission time Handle Problem Language Result Execution time Memory
339655 2020-12-25T19:18:40 Z ogibogi2004 The Big Prize (IOI17_prize) C++14
90 / 100
 93 ms 2284 KB 
#include "prize.h"
#include<bits/stdc++.h>
using namespace std;
const int MAXN=2e5+6;
pair<int,int> answer[MAXN];
vector<int>valuable;
int maxs=0;
pair<int,int>q;
vector<int>lollipops;
char lorv[MAXN];
pair<int,int> get_answer(int i)
{
	//cout<<i<<endl;
	if(answer[i].first!=-1)return answer[i];
	vector<int>q=ask(i);
	answer[i].first=q[0];
	answer[i].second=q[1];
	return answer[i];
}
void bs(int l,int r)
{
	if(l>r)return;
	pair<int,int> ivan=get_answer(l);
	if(l==r)
	{
		if(ivan.first+ivan.second!=maxs)
		{
			valuable.push_back(l);
		}
		return;
	}
	if(ivan.first+ivan.second!=maxs)
	{
		valuable.push_back(l);
		bs(l+1,r);
		return;
	}
	ivan=get_answer(r);
	if(ivan.first+ivan.second!=maxs)
	{
		valuable.push_back(r);
		bs(l,r-1);
		return;
	}
	if(get_answer(r).first==get_answer(l).first)return;
	int mid,low=l,high=r,ans=-1;
	while(low<=high)
	{
		mid=(low+high)/2;
		ivan=get_answer(mid);
		if(ivan.first+ivan.second!=maxs)
		{
			ans=mid;
			break;
		}
		if(ivan.first>get_answer(l).first)
		{
			high=mid-1;
		}
		else low=mid+1;
	}
	if(ans==-1)return;
	valuable.push_back(ans);
	bs(l+1,ans-1);
	bs(ans+1,r);
}
int find_best(int n) {
	if(n<=5000)
	{
		for(int i=0;i<n;i++)
		{
			vector<int>t=ask(i);
			if(t[0]+t[1]==0)
			{
				return i;
			}
		}
	}
	//cout<<"*\n";
	for(int i=0;i<n;i++)answer[i]={-1,-1};
	
	for(int i=0;i<500;i++)
	{
		q=get_answer(i);
		if(q.first+q.second==0)
		{
			/*for(int j=0;j<=200000000;j++)
			{
				j=4*j-3*j;
				answer[j%500]=answer[j%500];
				lorv[j%500]='Z';
			}*/
			return i;
		}
		answer[i]=q;
		maxs=max(maxs,q.first+q.second);
	}
	
	bs(0,n-1);
	
	
	/*for(int i=0;i<n;i++)lorv[i]='?';
	for(int i=0;i<500;i++)
	{
		if(answer[i].first+answer[i].second==maxs)
		{
			lorv[i]='L';
			lollipops.push_back(i);
		}
		else
		{
			lorv[i]='V';
			valuable.push_back(i);
		}
	}
	bs(500,n-1);*/
	//assert(false);
	for(auto j:valuable)
	{
		if(get_answer(j).first+get_answer(j).second==0)
		{
			return j;
		}
	}
	//assert(false);
	return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1900 KB Output is correct
2 Correct 6 ms 1900 KB Output is correct
3 Correct 6 ms 1900 KB Output is correct
4 Correct 6 ms 1900 KB Output is correct
5 Correct 8 ms 1900 KB Output is correct
6 Correct 2 ms 1900 KB Output is correct
7 Correct 5 ms 1900 KB Output is correct
8 Correct 6 ms 1900 KB Output is correct
9 Correct 6 ms 1900 KB Output is correct
10 Correct 8 ms 1900 KB Output is correct

Subtask #2
70.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1900 KB Output is correct
2 Correct 4 ms 2028 KB Output is correct
3 Correct 6 ms 1900 KB Output is correct
4 Correct 6 ms 1900 KB Output is correct
5 Correct 4 ms 2028 KB Output is correct
6 Correct 2 ms 1900 KB Output is correct
7 Correct 4 ms 2028 KB Output is correct
8 Correct 8 ms 1900 KB Output is correct
9 Correct 6 ms 1900 KB Output is correct
10 Correct 6 ms 1900 KB Output is correct
11 Correct 13 ms 2028 KB Output is correct
12 Correct 12 ms 2028 KB Output is correct
13 Correct 12 ms 1900 KB Output is correct
14 Correct 17 ms 492 KB Output is correct
15 Partially correct 71 ms 2028 KB Partially correct - number of queries: 7970
16 Partially correct 87 ms 2028 KB Partially correct - number of queries: 8429
17 Correct 5 ms 1900 KB Output is correct
18 Partially correct 85 ms 1900 KB Partially correct - number of queries: 8460
19 Correct 6 ms 1900 KB Output is correct
20 Partially correct 53 ms 1188 KB Partially correct - number of queries: 5613
21 Partially correct 61 ms 1900 KB Partially correct - number of queries: 7020
22 Partially correct 56 ms 2284 KB Partially correct - number of queries: 5991
23 Correct 6 ms 1900 KB Output is correct
24 Correct 7 ms 2028 KB Output is correct
25 Partially correct 62 ms 1900 KB Partially correct - number of queries: 7793
26 Partially correct 64 ms 2172 KB Partially correct - number of queries: 8026
27 Correct 8 ms 1900 KB Output is correct
28 Partially correct 70 ms 1900 KB Partially correct - number of queries: 7351
29 Partially correct 49 ms 2028 KB Partially correct - number of queries: 6153
30 Partially correct 88 ms 1900 KB Partially correct - number of queries: 8354
31 Correct 7 ms 1900 KB Output is correct
32 Correct 7 ms 1900 KB Output is correct
33 Correct 0 ms 364 KB Output is correct
34 Partially correct 52 ms 1972 KB Partially correct - number of queries: 7781
35 Correct 9 ms 1900 KB Output is correct
36 Partially correct 74 ms 1900 KB Partially correct - number of queries: 7599
37 Correct 11 ms 2028 KB Output is correct
38 Correct 7 ms 1900 KB Output is correct
39 Partially correct 75 ms 1900 KB Partially correct - number of queries: 8362
40 Partially correct 68 ms 1900 KB Partially correct - number of queries: 7278
41 Partially correct 70 ms 2028 KB Partially correct - number of queries: 7860
42 Partially correct 72 ms 2028 KB Partially correct - number of queries: 7860
43 Partially correct 65 ms 2028 KB Partially correct - number of queries: 6844
44 Partially correct 43 ms 1968 KB Partially correct - number of queries: 7737
45 Partially correct 70 ms 1900 KB Partially correct - number of queries: 7992
46 Correct 6 ms 1900 KB Output is correct
47 Partially correct 65 ms 2160 KB Partially correct - number of queries: 7833
48 Partially correct 47 ms 2096 KB Partially correct - number of queries: 8471
49 Partially correct 77 ms 1900 KB Partially correct - number of queries: 8000
50 Partially correct 85 ms 2156 KB Partially correct - number of queries: 8461
51 Partially correct 66 ms 1900 KB Partially correct - number of queries: 7595
52 Partially correct 82 ms 1900 KB Partially correct - number of queries: 8443
53 Correct 8 ms 1900 KB Output is correct
54 Partially correct 79 ms 2088 KB Partially correct - number of queries: 8231
55 Correct 6 ms 1900 KB Output is correct
56 Partially correct 90 ms 1900 KB Partially correct - number of queries: 8446
57 Partially correct 65 ms 1900 KB Partially correct - number of queries: 8105
58 Partially correct 68 ms 1900 KB Partially correct - number of queries: 7149
59 Partially correct 51 ms 2056 KB Partially correct - number of queries: 7847
60 Partially correct 56 ms 1900 KB Partially correct - number of queries: 5899
61 Correct 9 ms 1932 KB Output is correct
62 Correct 9 ms 1900 KB Output is correct
63 Correct 8 ms 1900 KB Output is correct
64 Correct 6 ms 1900 KB Output is correct
65 Correct 6 ms 1900 KB Output is correct
66 Correct 11 ms 1900 KB Output is correct
67 Correct 7 ms 1948 KB Output is correct
68 Correct 6 ms 1900 KB Output is correct
69 Correct 7 ms 1948 KB Output is correct
70 Correct 9 ms 1900 KB Output is correct
71 Partially correct 74 ms 2028 KB Partially correct - number of queries: 8739
72 Correct 9 ms 1900 KB Output is correct
73 Partially correct 72 ms 1900 KB Partially correct - number of queries: 8616
74 Partially correct 85 ms 2076 KB Partially correct - number of queries: 8686
75 Correct 7 ms 1900 KB Output is correct
76 Partially correct 73 ms 1900 KB Partially correct - number of queries: 7510
77 Partially correct 58 ms 2028 KB Partially correct - number of queries: 7839
78 Correct 11 ms 1900 KB Output is correct
79 Correct 31 ms 2028 KB Output is correct
80 Partially correct 43 ms 1948 KB Partially correct - number of queries: 8123
81 Partially correct 64 ms 1900 KB Partially correct - number of queries: 7885
82 Partially correct 68 ms 2028 KB Partially correct - number of queries: 8169
83 Correct 6 ms 1900 KB Output is correct
84 Partially correct 84 ms 1900 KB Partially correct - number of queries: 6917
85 Partially correct 93 ms 1900 KB Partially correct - number of queries: 8075
86 Correct 8 ms 1900 KB Output is correct
87 Correct 8 ms 1900 KB Output is correct
88 Correct 8 ms 1900 KB Output is correct
89 Correct 7 ms 1900 KB Output is correct
90 Correct 7 ms 1900 KB Output is correct
91 Correct 6 ms 1900 KB Output is correct
92 Correct 7 ms 1900 KB Output is correct
93 Correct 13 ms 1900 KB Output is correct
94 Correct 13 ms 1900 KB Output is correct
95 Correct 7 ms 1948 KB Output is correct
96 Correct 11 ms 1900 KB Output is correct
97 Correct 6 ms 1900 KB Output is correct