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Submission #622996

# Submission time Handle Problem Language Result Execution time Memory
622996 2022-08-04T23:52:11 Z AbdelmagedNour The Big Prize (IOI17_prize) C++17
100 / 100
 54 ms 5436 KB 
#include<bits/stdc++.h>
using namespace std;
#include "prize.h"
//#include "grader.cpp"
int res=-1;
vector<vector<int>>v;
map<vector<int>,set<int>>mp;
void divide(int l,int r){
    if(l>r||res!=-1)return;
    if(l==r){
        v[l]=ask(l);
        mp[v[l]].insert(l);
        if(v[l][0]+v[l][1]==0)res=l;
        return;
    }
    int md=(l+r)>>1;
    if(v[md].size()==0)v[md]=ask(md);
    if(v[md][0]+v[md][1]==0)res=md;
    mp[v[md]].insert(md);
    if(!(mp[v[md]].size()&&*(mp[v[md]].begin())<md)&&v[md][0])divide(l,md-1);
    if(!(mp[v[md]].size()&&*(mp[v[md]].rbegin())>md)&&v[md][1])divide(md+1,r);
}
int find_best(int n){
    v.clear();
    v.resize(n);
    mp.clear();
    res=-1;
    v[0]=ask(0);
    v[n-1]=ask(n-1);
    mp[v[0]].insert(0);
    mp[v[n-1]].insert(n-1);
    if(v[0][0]+v[0][1]==0)return 0;
    if(v[n-1][0]+v[n-1][1]==0)return n-1;
    divide(1,n-2);
	return res;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4892 KB Output is correct
2 Correct 3 ms 4904 KB Output is correct
3 Correct 3 ms 4896 KB Output is correct
4 Correct 3 ms 4892 KB Output is correct
5 Correct 3 ms 4944 KB Output is correct
6 Correct 3 ms 4904 KB Output is correct
7 Correct 3 ms 4896 KB Output is correct
8 Correct 3 ms 4908 KB Output is correct
9 Correct 3 ms 4892 KB Output is correct
10 Correct 4 ms 4944 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4892 KB Output is correct
2 Correct 4 ms 4944 KB Output is correct
3 Correct 3 ms 4892 KB Output is correct
4 Correct 2 ms 4904 KB Output is correct
5 Correct 3 ms 4900 KB Output is correct
6 Correct 3 ms 4968 KB Output is correct
7 Correct 3 ms 4900 KB Output is correct
8 Correct 3 ms 4896 KB Output is correct
9 Correct 2 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 4 ms 4944 KB Output is correct
12 Correct 3 ms 4888 KB Output is correct
13 Correct 7 ms 5040 KB Output is correct
14 Correct 3 ms 720 KB Output is correct
15 Correct 6 ms 5024 KB Output is correct
16 Correct 19 ms 5320 KB Output is correct
17 Correct 3 ms 4900 KB Output is correct
18 Correct 44 ms 5396 KB Output is correct
19 Correct 3 ms 4996 KB Output is correct
20 Correct 11 ms 2640 KB Output is correct
21 Correct 21 ms 5036 KB Output is correct
22 Correct 5 ms 4888 KB Output is correct
23 Correct 2 ms 4984 KB Output is correct
24 Correct 3 ms 4888 KB Output is correct
25 Correct 18 ms 5296 KB Output is correct
26 Correct 24 ms 5184 KB Output is correct
27 Correct 3 ms 5012 KB Output is correct
28 Correct 31 ms 5360 KB Output is correct
29 Correct 34 ms 5196 KB Output is correct
30 Correct 24 ms 5416 KB Output is correct
31 Correct 3 ms 4896 KB Output is correct
32 Correct 5 ms 5032 KB Output is correct
33 Correct 0 ms 208 KB Output is correct
34 Correct 9 ms 5108 KB Output is correct
35 Correct 4 ms 4944 KB Output is correct
36 Correct 8 ms 5048 KB Output is correct
37 Correct 3 ms 5068 KB Output is correct
38 Correct 3 ms 4896 KB Output is correct
39 Correct 12 ms 5124 KB Output is correct
40 Correct 41 ms 5360 KB Output is correct
41 Correct 29 ms 5160 KB Output is correct
42 Correct 25 ms 5152 KB Output is correct
43 Correct 28 ms 5088 KB Output is correct
44 Correct 21 ms 5060 KB Output is correct
45 Correct 14 ms 5032 KB Output is correct
46 Correct 3 ms 4944 KB Output is correct
47 Correct 26 ms 5064 KB Output is correct
48 Correct 36 ms 5248 KB Output is correct
49 Correct 7 ms 5020 KB Output is correct
50 Correct 49 ms 5340 KB Output is correct
51 Correct 15 ms 5208 KB Output is correct
52 Correct 4 ms 4928 KB Output is correct
53 Correct 3 ms 5060 KB Output is correct
54 Correct 21 ms 5140 KB Output is correct
55 Correct 4 ms 4896 KB Output is correct
56 Correct 53 ms 5320 KB Output is correct
57 Correct 32 ms 5288 KB Output is correct
58 Correct 39 ms 5272 KB Output is correct
59 Correct 19 ms 5188 KB Output is correct
60 Correct 19 ms 5144 KB Output is correct
61 Correct 5 ms 4944 KB Output is correct
62 Correct 3 ms 4900 KB Output is correct
63 Correct 5 ms 5012 KB Output is correct
64 Correct 3 ms 4996 KB Output is correct
65 Correct 3 ms 4892 KB Output is correct
66 Correct 3 ms 4992 KB Output is correct
67 Correct 3 ms 4900 KB Output is correct
68 Correct 3 ms 4936 KB Output is correct
69 Correct 3 ms 4944 KB Output is correct
70 Correct 3 ms 4888 KB Output is correct
71 Correct 52 ms 5436 KB Output is correct
72 Correct 7 ms 4944 KB Output is correct
73 Correct 54 ms 5320 KB Output is correct
74 Correct 41 ms 5348 KB Output is correct
75 Correct 5 ms 5012 KB Output is correct
76 Correct 40 ms 5288 KB Output is correct
77 Correct 41 ms 5340 KB Output is correct
78 Correct 8 ms 4944 KB Output is correct
79 Correct 19 ms 5164 KB Output is correct
80 Correct 39 ms 5420 KB Output is correct
81 Correct 49 ms 5320 KB Output is correct
82 Correct 40 ms 5420 KB Output is correct
83 Correct 4 ms 4904 KB Output is correct
84 Correct 26 ms 5352 KB Output is correct
85 Correct 40 ms 5332 KB Output is correct
86 Correct 7 ms 4944 KB Output is correct
87 Correct 5 ms 4944 KB Output is correct
88 Correct 8 ms 5020 KB Output is correct
89 Correct 8 ms 4944 KB Output is correct
90 Correct 4 ms 4944 KB Output is correct
91 Correct 5 ms 4944 KB Output is correct
92 Correct 3 ms 4944 KB Output is correct
93 Correct 6 ms 4944 KB Output is correct
94 Correct 4 ms 5036 KB Output is correct
95 Correct 5 ms 4944 KB Output is correct
96 Correct 6 ms 4944 KB Output is correct
97 Correct 3 ms 4944 KB Output is correct