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Submission #1118435

# Submission time Handle Problem Language Result Execution time Memory
1118435 2024-11-25T13:39:55 Z adaawf The Big Prize (IOI17_prize) C++17
20 / 100
 167 ms 2996 KB 
#include <bits/stdc++.h>
using namespace std;
int a[200005], cc = 0, hh = 200000, dd[200005], c[200005][10];
void build(int n) {
    for (int j = 0; j <= 9; j++) {
        c[0][j] = (a[0] <= j);
        for (int i = 1; i < n; i++) {
            c[i][j] = c[i - 1][j] + (a[i] <= j);
        }
    }
}
mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());
vector<int> ask(int i);
int find_best(int n) {
    vector<pair<int, pair<int, int>>> v;
    vector<int> t;
    int mi = 0;
    for (int i = 0; i < 250; i++) {
        int h = mt() % n;
        t = ask(h);
        if (t[0] + t[1] == 0) return h;
        mi = max(mi, t[0] + t[1]);
    }
    for (int i = 0; i < n; i++) dd[i] = 0;
    int c = 0;
    for (int i = 0; i < n; i += 500) {
        while (1) {
            if (i >= n) break;
            t = ask(i);
            if (t[0] + t[1] == 0) return i;
            if (t[0] + t[1] == mi) {
                break;
            }
            c++;
            i++;
        }
        if (i < n) {
            v.push_back({i, {t[1], c}});
            c = 0;
        }
    }
    v.push_back({n, {0, c}});
    for (int i = 0; i < v.size() - 1; i++) {
        int h = v[i].second.first - v[i + 1].second.first;
        h -= v[i + 1].second.second;
        vector<int> va, vc, vv;
        for (int j = v[i].first; j < min(v[i].first + 500, n + 1); j++) {
            va.push_back(j);
        }
        for (int j = 0; j < h; j++) {
            int l = 0, r = va.size() - 1, res;
            while (1) {
                int mid = (l + r) / 2;
                res = va[mid];
                dd[va[mid]] = 1;
                t = ask(va[mid]);
                if (t[0] + t[1] == 0) return va[mid];
                if (t[0] + t[1] != mi) break;
                for (int w : vc) {
                    if (w <= va[mid]) t[1]++;
                }
                if (t[1] == v[i].second.first) {
                    l = mid + 1;
                }
                else r = mid - 1;
            }
            vc.push_back(res);
            vv.clear();
            for (int w : va) {
                if (dd[w] == 0) vv.push_back(w);
            }
            va = vv;
        }
    }
    return -1;
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:43:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for (int i = 0; i < v.size() - 1; i++) {
      |                     ~~^~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 2640 KB Output is correct
2 Correct 10 ms 2640 KB Output is correct
3 Correct 12 ms 2640 KB Output is correct
4 Correct 13 ms 2816 KB Output is correct
5 Correct 7 ms 2504 KB Output is correct
6 Correct 5 ms 2640 KB Output is correct
7 Correct 8 ms 2740 KB Output is correct
8 Correct 8 ms 2896 KB Output is correct
9 Correct 11 ms 2640 KB Output is correct
10 Correct 10 ms 2640 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 2640 KB Output is correct
2 Correct 11 ms 2640 KB Output is correct
3 Correct 12 ms 2880 KB Output is correct
4 Correct 11 ms 2896 KB Output is correct
5 Correct 7 ms 2640 KB Output is correct
6 Correct 4 ms 2640 KB Output is correct
7 Correct 8 ms 2896 KB Output is correct
8 Correct 8 ms 2896 KB Output is correct
9 Correct 11 ms 2640 KB Output is correct
10 Correct 11 ms 2500 KB Output is correct
11 Correct 11 ms 2740 KB Output is correct
12 Correct 10 ms 2748 KB Output is correct
13 Correct 15 ms 2748 KB Output is correct
14 Correct 10 ms 2384 KB Output is correct
15 Correct 20 ms 2880 KB Output is correct
16 Correct 55 ms 2896 KB Output is correct
17 Correct 12 ms 2640 KB Output is correct
18 Correct 74 ms 2640 KB Output is correct
19 Correct 12 ms 2640 KB Output is correct
20 Correct 24 ms 2384 KB Output is correct
21 Correct 33 ms 2996 KB Output is correct
22 Correct 15 ms 2640 KB Output is correct
23 Correct 12 ms 2756 KB Output is correct
24 Correct 12 ms 2640 KB Output is correct
25 Correct 47 ms 2640 KB Output is correct
26 Correct 43 ms 2640 KB Output is correct
27 Correct 11 ms 2896 KB Output is correct
28 Correct 74 ms 2640 KB Output is correct
29 Correct 52 ms 2640 KB Output is correct
30 Correct 66 ms 2896 KB Output is correct
31 Correct 13 ms 2808 KB Output is correct
32 Correct 13 ms 2896 KB Output is correct
33 Correct 5 ms 2500 KB Output is correct
34 Correct 29 ms 2896 KB Output is correct
35 Correct 13 ms 2640 KB Output is correct
36 Correct 22 ms 2640 KB Output is correct
37 Correct 11 ms 2808 KB Output is correct
38 Correct 11 ms 2512 KB Output is correct
39 Correct 32 ms 2640 KB Output is correct
40 Correct 65 ms 2816 KB Output is correct
41 Correct 40 ms 2640 KB Output is correct
42 Correct 50 ms 2736 KB Output is correct
43 Correct 46 ms 2752 KB Output is correct
44 Correct 30 ms 2732 KB Output is correct
45 Correct 25 ms 2912 KB Output is correct
46 Correct 13 ms 2500 KB Output is correct
47 Correct 39 ms 2740 KB Output is correct
48 Correct 54 ms 2984 KB Output is correct
49 Correct 17 ms 2640 KB Output is correct
50 Correct 76 ms 2748 KB Output is correct
51 Correct 35 ms 2640 KB Output is correct
52 Correct 10 ms 2880 KB Output is correct
53 Correct 9 ms 2760 KB Output is correct
54 Correct 37 ms 2640 KB Output is correct
55 Correct 9 ms 2640 KB Output is correct
56 Correct 75 ms 2640 KB Output is correct
57 Correct 41 ms 2896 KB Output is correct
58 Correct 44 ms 2640 KB Output is correct
59 Correct 46 ms 2668 KB Output is correct
60 Correct 43 ms 2640 KB Output is correct
61 Correct 11 ms 2640 KB Output is correct
62 Correct 12 ms 2640 KB Output is correct
63 Correct 12 ms 2640 KB Output is correct
64 Correct 12 ms 2640 KB Output is correct
65 Correct 12 ms 2896 KB Output is correct
66 Correct 18 ms 2896 KB Output is correct
67 Correct 20 ms 2812 KB Output is correct
68 Correct 11 ms 2504 KB Output is correct
69 Correct 18 ms 2640 KB Output is correct
70 Correct 13 ms 2640 KB Output is correct
71 Correct 73 ms 2504 KB Output is correct
72 Correct 19 ms 2640 KB Output is correct
73 Correct 78 ms 2736 KB Output is correct
74 Correct 91 ms 2640 KB Output is correct
75 Correct 12 ms 2752 KB Output is correct
76 Correct 73 ms 2740 KB Output is correct
77 Correct 82 ms 2640 KB Output is correct
78 Correct 18 ms 2736 KB Output is correct
79 Correct 40 ms 2640 KB Output is correct
80 Correct 72 ms 2640 KB Output is correct
81 Correct 85 ms 2496 KB Output is correct
82 Correct 65 ms 2908 KB Output is correct
83 Correct 14 ms 2996 KB Output is correct
84 Correct 61 ms 2640 KB Output is correct
85 Correct 79 ms 2740 KB Output is correct
86 Correct 52 ms 2736 KB Output is correct
87 Correct 12 ms 2640 KB Output is correct
88 Correct 49 ms 2896 KB Output is correct
89 Correct 33 ms 2640 KB Output is correct
90 Correct 13 ms 2744 KB Output is correct
91 Correct 36 ms 2640 KB Output is correct
92 Correct 27 ms 2640 KB Output is correct
93 Incorrect 167 ms 2500 KB Incorrect
94 Halted 0 ms 0 KB -