Submission #67692

# Submission time Handle Problem Language Result Execution time Memory
67692 2018-08-15T08:43:50 Z zscoder The Big Prize (IOI17_prize) C++17
99.75 / 100
76 ms 3020 KB
#include "prize.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> ii;

#define fi first
#define se second
#define pb push_back
#define mp make_pair

ii dp[442311];
int n;
int totalquery;
const int MX = 10000;
ii query(int x)
{
	if(x<0||x>=n) return mp(0,0);
	if(dp[x].fi>=0) return dp[x];
	totalquery++; //assert(totalquery<=MX);
	vector<int> a = ask(x);
	dp[x].fi=a[0]; dp[x].se=a[1]; return dp[x];
}

vi global;
vector<int> vec;
int newmax;

void solve(int l, int r)
{
	if(l>r) return ;
	//later optimize by using count 
	int mid=(l+r)>>1;
	ii cntl=query(vec[l]);
	assert(cntl.fi+cntl.se<=newmax);
	if(cntl.fi+cntl.se<newmax){global.pb(vec[l]); solve(l+1,r); return ;}
	ii cntr=query(vec[r]);
	assert(cntr.fi+cntr.se<=newmax);
	if(cntr.fi+cntr.se<newmax){global.pb(vec[r]); solve(l,r-1); return ;}
	ii tmp = query(vec[mid]);
	assert(tmp.fi+tmp.se<=newmax);
	if(tmp.fi+tmp.se<newmax)
	{
		global.pb(vec[mid]);
		solve(l,mid-1); solve(mid+1,r);
		return ;
	}
	int cntleft = tmp.fi-cntl.fi;
	int cntright = tmp.se-cntr.se;
	if(cntleft) solve(l,mid);
	if(cntright) solve(mid,r);
}

int find_best(int _n) 
{
	n=_n;
	for(int i=0;i<n;i++) {dp[i]=mp(-1,-1);vec.pb(i);}
	while(vec.size()>1)
	{
		global.clear(); int C=0; int cr=int(vec.size());
		int p=1;
		while(cr>1)
		{
			C+=int(sqrt(cr))+p; cr=int(sqrt(cr)); p=0;
		}
		C=min(C,int(vec.size()));
		newmax=0;
		for(int i=0;i<C;i++) 
		{
			newmax=max(newmax,query(vec[i]).fi+query(vec[i]).se);
			if(newmax>=27) break;
		}
		solve(0,int(vec.size())-1);
		vec=global; sort(vec.begin(),vec.end()); vec.erase(unique(vec.begin(),vec.end()),vec.end());
	}
	return vec[0];
}
# Verdict Execution time Memory Grader output
1 Correct 9 ms 2792 KB Output is correct
2 Correct 10 ms 2856 KB Output is correct
3 Correct 17 ms 2928 KB Output is correct
4 Correct 14 ms 2928 KB Output is correct
5 Correct 13 ms 2928 KB Output is correct
6 Correct 14 ms 2928 KB Output is correct
7 Correct 17 ms 3020 KB Output is correct
8 Correct 11 ms 3020 KB Output is correct
9 Correct 10 ms 3020 KB Output is correct
10 Correct 13 ms 3020 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 7 ms 3020 KB Output is correct
2 Correct 12 ms 3020 KB Output is correct
3 Correct 11 ms 3020 KB Output is correct
4 Correct 14 ms 3020 KB Output is correct
5 Correct 12 ms 3020 KB Output is correct
6 Correct 10 ms 3020 KB Output is correct
7 Correct 11 ms 3020 KB Output is correct
8 Correct 11 ms 3020 KB Output is correct
9 Correct 13 ms 3020 KB Output is correct
10 Correct 12 ms 3020 KB Output is correct
11 Correct 14 ms 3020 KB Output is correct
12 Correct 12 ms 3020 KB Output is correct
13 Correct 12 ms 3020 KB Output is correct
14 Correct 12 ms 3020 KB Output is correct
15 Correct 36 ms 3020 KB Output is correct
16 Correct 64 ms 3020 KB Output is correct
17 Correct 71 ms 3020 KB Output is correct
18 Correct 49 ms 3020 KB Output is correct
19 Correct 68 ms 3020 KB Output is correct
20 Correct 35 ms 3020 KB Output is correct
21 Correct 66 ms 3020 KB Output is correct
22 Correct 61 ms 3020 KB Output is correct
23 Correct 11 ms 3020 KB Output is correct
24 Correct 12 ms 3020 KB Output is correct
25 Correct 62 ms 3020 KB Output is correct
26 Correct 25 ms 3020 KB Output is correct
27 Correct 14 ms 3020 KB Output is correct
28 Correct 72 ms 3020 KB Output is correct
29 Correct 27 ms 3020 KB Output is correct
30 Correct 67 ms 3020 KB Output is correct
31 Correct 65 ms 3020 KB Output is correct
32 Correct 14 ms 3020 KB Output is correct
33 Correct 2 ms 3020 KB Output is correct
34 Correct 55 ms 3020 KB Output is correct
35 Correct 14 ms 3020 KB Output is correct
36 Correct 60 ms 3020 KB Output is correct
37 Correct 11 ms 3020 KB Output is correct
38 Correct 13 ms 3020 KB Output is correct
39 Correct 44 ms 3020 KB Output is correct
40 Correct 41 ms 3020 KB Output is correct
41 Correct 42 ms 3020 KB Output is correct
42 Correct 69 ms 3020 KB Output is correct
43 Correct 73 ms 3020 KB Output is correct
44 Correct 72 ms 3020 KB Output is correct
45 Correct 57 ms 3020 KB Output is correct
46 Correct 56 ms 3020 KB Output is correct
47 Correct 39 ms 3020 KB Output is correct
48 Correct 53 ms 3020 KB Output is correct
49 Correct 61 ms 3020 KB Output is correct
50 Correct 61 ms 3020 KB Output is correct
51 Correct 59 ms 3020 KB Output is correct
52 Correct 67 ms 3020 KB Output is correct
53 Correct 13 ms 3020 KB Output is correct
54 Correct 46 ms 3020 KB Output is correct
55 Correct 69 ms 3020 KB Output is correct
56 Correct 76 ms 3020 KB Output is correct
57 Correct 63 ms 3020 KB Output is correct
58 Correct 31 ms 3020 KB Output is correct
59 Correct 54 ms 3020 KB Output is correct
60 Correct 60 ms 3020 KB Output is correct
61 Correct 15 ms 3020 KB Output is correct
62 Correct 14 ms 3020 KB Output is correct
63 Correct 13 ms 3020 KB Output is correct
64 Correct 16 ms 3020 KB Output is correct
65 Correct 8 ms 3020 KB Output is correct
66 Correct 11 ms 3020 KB Output is correct
67 Correct 9 ms 3020 KB Output is correct
68 Correct 13 ms 3020 KB Output is correct
69 Correct 7 ms 3020 KB Output is correct
70 Correct 11 ms 3020 KB Output is correct
71 Correct 25 ms 3020 KB Output is correct
72 Correct 11 ms 3020 KB Output is correct
73 Correct 38 ms 3020 KB Output is correct
74 Correct 32 ms 3020 KB Output is correct
75 Correct 14 ms 3020 KB Output is correct
76 Correct 50 ms 3020 KB Output is correct
77 Partially correct 54 ms 3020 KB Partially correct - number of queries: 5025
78 Correct 11 ms 3020 KB Output is correct
79 Correct 31 ms 3020 KB Output is correct
80 Correct 41 ms 3020 KB Output is correct
81 Correct 62 ms 3020 KB Output is correct
82 Correct 43 ms 3020 KB Output is correct
83 Correct 16 ms 3020 KB Output is correct
84 Correct 42 ms 3020 KB Output is correct
85 Correct 72 ms 3020 KB Output is correct
86 Correct 13 ms 3020 KB Output is correct
87 Correct 6 ms 3020 KB Output is correct
88 Correct 12 ms 3020 KB Output is correct
89 Correct 15 ms 3020 KB Output is correct
90 Correct 10 ms 3020 KB Output is correct
91 Correct 9 ms 3020 KB Output is correct
92 Correct 10 ms 3020 KB Output is correct
93 Correct 14 ms 3020 KB Output is correct
94 Correct 14 ms 3020 KB Output is correct
95 Correct 12 ms 3020 KB Output is correct
96 Correct 17 ms 3020 KB Output is correct
97 Correct 9 ms 3020 KB Output is correct