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Submission #960665

# Submission time Handle Problem Language Result Execution time Memory
960665 2024-04-10T20:43:09 Z MarwenElarbi The Big Prize (IOI17_prize) C++17
100 / 100
 27 ms 3104 KB 
#include <bits/stdc++.h>
#include "prize.h"

using namespace std;
std::vector<int> ask(int i);

int ans[200005][2];
int best=-1;
 
void ask2(int i) {
        if(best == i) return;
        
        if(ans[i][0]+ans[i][1] == 0) {
                auto x = ask(i);
                ans[i][0] = x[0];
                ans[i][1] = x[1];
                if(ans[i][0]+ans[i][1] == 0) assert(best==-1), best &= i;
        }
}
 
int rankk(int i) {
        ask2(i);
        return ans[i][0]+ans[i][1];
}
 
int right(int i) {
        ask2(i);
        return ans[i][1];
}
 
 
 
// lower rankk is more rare
void solve(int l, int r) {
        if(best >= 0) return;
        if(r<l) return;
        if(l==r) {
            rankk(l);
            return;
        }
        while(rankk(l) != rankk(r)) {
                while(rankk(l) < rankk(r)) l++;
                while(rankk(l) > rankk(r)) r--;
        }
        if(right(l) == right(r)) return;
        
        int m=(l+r)/2;
        solve(l,m);
        solve(m,r);
}
 
int find_best(int n) {
        solve(0, n-1);
        assert(best >= 0);
        return best;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 448 KB Output is correct
2 Correct 1 ms 448 KB Output is correct
3 Correct 1 ms 448 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 448 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 0 ms 444 KB Output is correct
10 Correct 0 ms 468 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 700 KB Output is correct
2 Correct 1 ms 448 KB Output is correct
3 Correct 1 ms 444 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 444 KB Output is correct
8 Correct 1 ms 444 KB Output is correct
9 Correct 0 ms 448 KB Output is correct
10 Correct 0 ms 468 KB Output is correct
11 Correct 1 ms 1000 KB Output is correct
12 Correct 0 ms 444 KB Output is correct
13 Correct 2 ms 1020 KB Output is correct
14 Correct 1 ms 444 KB Output is correct
15 Correct 3 ms 1516 KB Output is correct
16 Correct 17 ms 3104 KB Output is correct
17 Correct 1 ms 444 KB Output is correct
18 Correct 26 ms 2420 KB Output is correct
19 Correct 1 ms 704 KB Output is correct
20 Correct 6 ms 1200 KB Output is correct
21 Correct 9 ms 1276 KB Output is correct
22 Correct 2 ms 844 KB Output is correct
23 Correct 1 ms 600 KB Output is correct
24 Correct 1 ms 448 KB Output is correct
25 Correct 11 ms 1112 KB Output is correct
26 Correct 9 ms 1588 KB Output is correct
27 Correct 1 ms 496 KB Output is correct
28 Correct 23 ms 2608 KB Output is correct
29 Correct 16 ms 2588 KB Output is correct
30 Correct 25 ms 2716 KB Output is correct
31 Correct 0 ms 444 KB Output is correct
32 Correct 2 ms 1048 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 6 ms 1100 KB Output is correct
35 Correct 1 ms 508 KB Output is correct
36 Correct 4 ms 640 KB Output is correct
37 Correct 1 ms 492 KB Output is correct
38 Correct 0 ms 448 KB Output is correct
39 Correct 9 ms 1892 KB Output is correct
40 Correct 20 ms 2324 KB Output is correct
41 Correct 18 ms 1820 KB Output is correct
42 Correct 13 ms 2156 KB Output is correct
43 Correct 12 ms 2020 KB Output is correct
44 Correct 10 ms 1672 KB Output is correct
45 Correct 8 ms 1304 KB Output is correct
46 Correct 0 ms 444 KB Output is correct
47 Correct 11 ms 1068 KB Output is correct
48 Correct 14 ms 2796 KB Output is correct
49 Correct 2 ms 808 KB Output is correct
50 Correct 23 ms 1724 KB Output is correct
51 Correct 7 ms 960 KB Output is correct
52 Correct 1 ms 480 KB Output is correct
53 Correct 1 ms 504 KB Output is correct
54 Correct 8 ms 1480 KB Output is correct
55 Correct 1 ms 448 KB Output is correct
56 Correct 26 ms 2148 KB Output is correct
57 Correct 19 ms 1856 KB Output is correct
58 Correct 14 ms 1764 KB Output is correct
59 Correct 14 ms 2096 KB Output is correct
60 Correct 14 ms 1544 KB Output is correct
61 Correct 1 ms 504 KB Output is correct
62 Correct 0 ms 448 KB Output is correct
63 Correct 1 ms 504 KB Output is correct
64 Correct 1 ms 500 KB Output is correct
65 Correct 1 ms 344 KB Output is correct
66 Correct 2 ms 344 KB Output is correct
67 Correct 2 ms 344 KB Output is correct
68 Correct 3 ms 444 KB Output is correct
69 Correct 2 ms 344 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 24 ms 2468 KB Output is correct
72 Correct 3 ms 1240 KB Output is correct
73 Correct 25 ms 2984 KB Output is correct
74 Correct 25 ms 2428 KB Output is correct
75 Correct 1 ms 464 KB Output is correct
76 Correct 27 ms 1980 KB Output is correct
77 Correct 21 ms 2332 KB Output is correct
78 Correct 3 ms 1004 KB Output is correct
79 Correct 14 ms 1916 KB Output is correct
80 Correct 26 ms 2928 KB Output is correct
81 Correct 19 ms 2632 KB Output is correct
82 Correct 26 ms 2748 KB Output is correct
83 Correct 1 ms 696 KB Output is correct
84 Correct 20 ms 1960 KB Output is correct
85 Correct 22 ms 2388 KB Output is correct
86 Correct 2 ms 960 KB Output is correct
87 Correct 1 ms 448 KB Output is correct
88 Correct 1 ms 1220 KB Output is correct
89 Correct 1 ms 708 KB Output is correct
90 Correct 1 ms 600 KB Output is correct
91 Correct 1 ms 704 KB Output is correct
92 Correct 1 ms 452 KB Output is correct
93 Correct 2 ms 828 KB Output is correct
94 Correct 2 ms 752 KB Output is correct
95 Correct 2 ms 1080 KB Output is correct
96 Correct 2 ms 960 KB Output is correct
97 Correct 0 ms 476 KB Output is correct