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Submission #771932

# Submission time Handle Problem Language Result Execution time Memory
771932 2023-07-03T12:19:58 Z _martynas The Big Prize (IOI17_prize) C++11
20 / 100
 81 ms 336 KB 
#include "prize.h"
#include <bits/stdc++.h>

using namespace std;

const int jump = 256;

int find_best(int n) {
    mt19937 rng(420);
    uniform_int_distribution<int> dist(0, n-1);
    int mx_sum = 0;
    for(int k = 0; k < 200; k++) {
        int i = dist(rng);
        auto v = ask(i);
        if(v[0] + v[1] == 0) return i;
        mx_sum = max(mx_sum, v[0]+v[1]);
    }
    for(int i = 0; i < n; i++) {
        auto v = ask(i);
        int sum = v[0]+v[1];
        if(sum == 0) {
            return i;
        }
        if(sum == mx_sum) {
            vector<int> v_p;
//            if(i+jump < n) {
//                v_p = ask(i+jump);
//                if() {
//
//                }
//            }
            int l = i, r = n-1;
            while(l < r) {
                int m = (l+r+1)/2;
                v_p = ask(m);
                int sum_p = v_p[0]+v_p[1];
                if(sum_p < mx_sum || v_p[0] > v[0]) {
                    r = m-1;
                }
                else {
                    l = m;
                }
            }
            i = l;
        }
    }
	return 0;
}

/*
5
2 2 2 1 2

8
3 3 2 3 3 2 1 3

sample:
8
3 2 3 1 3 3 2 3


*/

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 208 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 3 ms 208 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 2 ms 288 KB Output is correct
6 Correct 2 ms 296 KB Output is correct
7 Correct 1 ms 292 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 5 ms 208 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 288 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 292 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 2 ms 208 KB Output is correct
6 Correct 2 ms 288 KB Output is correct
7 Correct 1 ms 288 KB Output is correct
8 Correct 1 ms 288 KB Output is correct
9 Correct 2 ms 208 KB Output is correct
10 Correct 2 ms 208 KB Output is correct
11 Correct 2 ms 336 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 8 ms 292 KB Output is correct
14 Correct 6 ms 208 KB Output is correct
15 Correct 5 ms 292 KB Output is correct
16 Partially correct 46 ms 208 KB Partially correct - number of queries: 7533
17 Correct 2 ms 292 KB Output is correct
18 Partially correct 29 ms 288 KB Partially correct - number of queries: 8809
19 Correct 2 ms 208 KB Output is correct
20 Correct 8 ms 288 KB Output is correct
21 Correct 32 ms 208 KB Output is correct
22 Correct 5 ms 208 KB Output is correct
23 Correct 2 ms 288 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Partially correct 42 ms 288 KB Partially correct - number of queries: 5072
26 Correct 17 ms 288 KB Output is correct
27 Correct 1 ms 284 KB Output is correct
28 Partially correct 59 ms 292 KB Partially correct - number of queries: 8367
29 Partially correct 56 ms 208 KB Partially correct - number of queries: 6407
30 Partially correct 67 ms 208 KB Partially correct - number of queries: 8752
31 Correct 2 ms 292 KB Output is correct
32 Correct 3 ms 208 KB Output is correct
33 Correct 2 ms 208 KB Output is correct
34 Correct 22 ms 292 KB Output is correct
35 Correct 1 ms 288 KB Output is correct
36 Correct 12 ms 296 KB Output is correct
37 Correct 2 ms 208 KB Output is correct
38 Correct 2 ms 288 KB Output is correct
39 Correct 36 ms 292 KB Output is correct
40 Partially correct 30 ms 292 KB Partially correct - number of queries: 7506
41 Partially correct 18 ms 292 KB Partially correct - number of queries: 5349
42 Partially correct 44 ms 208 KB Partially correct - number of queries: 5349
43 Correct 17 ms 284 KB Output is correct
44 Correct 26 ms 288 KB Output is correct
45 Correct 25 ms 296 KB Output is correct
46 Correct 1 ms 208 KB Output is correct
47 Correct 15 ms 292 KB Output is correct
48 Partially correct 53 ms 296 KB Partially correct - number of queries: 6565
49 Correct 3 ms 292 KB Output is correct
50 Partially correct 73 ms 208 KB Partially correct - number of queries: 8806
51 Correct 1 ms 208 KB Output is correct
52 Correct 3 ms 208 KB Output is correct
53 Correct 3 ms 288 KB Output is correct
54 Correct 34 ms 292 KB Output is correct
55 Correct 1 ms 292 KB Output is correct
56 Partially correct 29 ms 288 KB Partially correct - number of queries: 8808
57 Partially correct 42 ms 208 KB Partially correct - number of queries: 6488
58 Partially correct 22 ms 336 KB Partially correct - number of queries: 6595
59 Partially correct 18 ms 296 KB Partially correct - number of queries: 5349
60 Correct 18 ms 208 KB Output is correct
61 Correct 1 ms 336 KB Output is correct
62 Correct 2 ms 208 KB Output is correct
63 Correct 3 ms 276 KB Output is correct
64 Correct 3 ms 208 KB Output is correct
65 Correct 3 ms 292 KB Output is correct
66 Correct 4 ms 268 KB Output is correct
67 Correct 2 ms 292 KB Output is correct
68 Correct 5 ms 208 KB Output is correct
69 Correct 6 ms 208 KB Output is correct
70 Correct 2 ms 288 KB Output is correct
71 Partially correct 32 ms 292 KB Partially correct - number of queries: 9020
72 Correct 7 ms 208 KB Output is correct
73 Partially correct 57 ms 208 KB Partially correct - number of queries: 8893
74 Partially correct 51 ms 208 KB Partially correct - number of queries: 8947
75 Correct 3 ms 208 KB Output is correct
76 Partially correct 52 ms 208 KB Partially correct - number of queries: 7679
77 Partially correct 76 ms 208 KB Partially correct - number of queries: 8870
78 Correct 7 ms 208 KB Output is correct
79 Correct 34 ms 208 KB Output is correct
80 Partially correct 59 ms 208 KB Partially correct - number of queries: 8862
81 Partially correct 60 ms 208 KB Partially correct - number of queries: 8874
82 Partially correct 68 ms 208 KB Partially correct - number of queries: 8808
83 Correct 3 ms 208 KB Output is correct
84 Partially correct 48 ms 208 KB Partially correct - number of queries: 7274
85 Partially correct 52 ms 208 KB Partially correct - number of queries: 8907
86 Partially correct 75 ms 208 KB Partially correct - number of queries: 8700
87 Correct 4 ms 208 KB Output is correct
88 Partially correct 46 ms 208 KB Partially correct - number of queries: 8319
89 Partially correct 76 ms 208 KB Partially correct - number of queries: 8641
90 Correct 3 ms 208 KB Output is correct
91 Correct 16 ms 208 KB Output is correct
92 Partially correct 48 ms 208 KB Partially correct - number of queries: 6130
93 Incorrect 81 ms 208 KB Incorrect
94 Halted 0 ms 0 KB -