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Submission #1118428

# Submission time Handle Problem Language Result Execution time Memory
1118428 2024-11-25T13:33:35 Z adaawf The Big Prize (IOI17_prize) C++17
98.72 / 100
 99 ms 3132 KB 
#include <iostream>
#include <vector>
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);
        }
    }
}
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 < 480; i++) {
        t = ask(i);
        if (t[0] + t[1] == 0) return i;
        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:42:23: 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]
   42 |     for (int i = 0; i < v.size() - 1; i++) {
      |                     ~~^~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 2720 KB Output is correct
2 Correct 17 ms 2640 KB Output is correct
3 Correct 16 ms 2640 KB Output is correct
4 Correct 15 ms 2724 KB Output is correct
5 Correct 14 ms 2496 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 12 ms 2640 KB Output is correct
8 Correct 12 ms 2652 KB Output is correct
9 Correct 17 ms 2744 KB Output is correct
10 Correct 16 ms 2492 KB Output is correct

Subtask #2
78.72 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 2640 KB Output is correct
2 Correct 15 ms 2640 KB Output is correct
3 Correct 13 ms 2716 KB Output is correct
4 Correct 20 ms 2496 KB Output is correct
5 Correct 13 ms 2492 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 12 ms 2752 KB Output is correct
8 Correct 10 ms 2660 KB Output is correct
9 Correct 16 ms 2640 KB Output is correct
10 Correct 16 ms 2496 KB Output is correct
11 Correct 17 ms 2896 KB Output is correct
12 Correct 14 ms 2736 KB Output is correct
13 Correct 18 ms 2740 KB Output is correct
14 Correct 11 ms 2492 KB Output is correct
15 Correct 23 ms 2732 KB Output is correct
16 Correct 57 ms 2888 KB Output is correct
17 Correct 8 ms 336 KB Output is correct
18 Correct 69 ms 2728 KB Output is correct
19 Correct 8 ms 336 KB Output is correct
20 Correct 24 ms 2384 KB Output is correct
21 Correct 38 ms 3000 KB Output is correct
22 Correct 14 ms 2996 KB Output is correct
23 Correct 11 ms 2896 KB Output is correct
24 Correct 14 ms 2896 KB Output is correct
25 Correct 46 ms 2756 KB Output is correct
26 Correct 45 ms 2896 KB Output is correct
27 Correct 16 ms 2768 KB Output is correct
28 Correct 73 ms 2640 KB Output is correct
29 Correct 61 ms 2736 KB Output is correct
30 Correct 81 ms 2732 KB Output is correct
31 Correct 8 ms 336 KB Output is correct
32 Correct 17 ms 2720 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 32 ms 2640 KB Output is correct
35 Correct 16 ms 2640 KB Output is correct
36 Correct 25 ms 2732 KB Output is correct
37 Correct 16 ms 2888 KB Output is correct
38 Correct 17 ms 2632 KB Output is correct
39 Correct 43 ms 2740 KB Output is correct
40 Correct 72 ms 2492 KB Output is correct
41 Correct 56 ms 2640 KB Output is correct
42 Correct 50 ms 2736 KB Output is correct
43 Correct 60 ms 2640 KB Output is correct
44 Correct 36 ms 2492 KB Output is correct
45 Correct 33 ms 2732 KB Output is correct
46 Correct 7 ms 592 KB Output is correct
47 Correct 41 ms 2640 KB Output is correct
48 Correct 59 ms 2752 KB Output is correct
49 Correct 21 ms 2496 KB Output is correct
50 Correct 81 ms 2724 KB Output is correct
51 Correct 44 ms 2896 KB Output is correct
52 Correct 15 ms 2496 KB Output is correct
53 Correct 16 ms 2496 KB Output is correct
54 Correct 41 ms 2896 KB Output is correct
55 Correct 8 ms 336 KB Output is correct
56 Correct 73 ms 2640 KB Output is correct
57 Correct 68 ms 2640 KB Output is correct
58 Correct 60 ms 2892 KB Output is correct
59 Correct 55 ms 2640 KB Output is correct
60 Correct 51 ms 2640 KB Output is correct
61 Correct 14 ms 2640 KB Output is correct
62 Correct 15 ms 3132 KB Output is correct
63 Correct 16 ms 2500 KB Output is correct
64 Correct 13 ms 2724 KB Output is correct
65 Correct 19 ms 2720 KB Output is correct
66 Correct 22 ms 2492 KB Output is correct
67 Correct 21 ms 2736 KB Output is correct
68 Correct 7 ms 336 KB Output is correct
69 Correct 23 ms 2640 KB Output is correct
70 Correct 17 ms 2640 KB Output is correct
71 Partially correct 99 ms 2736 KB Partially correct - number of queries: 5128
72 Correct 20 ms 3132 KB Output is correct
73 Partially correct 87 ms 2896 KB Partially correct - number of queries: 5065
74 Partially correct 84 ms 2748 KB Partially correct - number of queries: 5092
75 Correct 18 ms 2732 KB Output is correct
76 Correct 77 ms 2640 KB Output is correct
77 Correct 87 ms 2888 KB Output is correct
78 Correct 20 ms 2652 KB Output is correct
79 Correct 42 ms 2640 KB Output is correct
80 Correct 82 ms 2640 KB Output is correct
81 Correct 80 ms 2736 KB Output is correct
82 Correct 85 ms 2500 KB Output is correct
83 Correct 19 ms 2492 KB Output is correct
84 Correct 63 ms 2744 KB Output is correct
85 Correct 71 ms 2496 KB Output is correct
86 Correct 25 ms 2640 KB Output is correct
87 Correct 12 ms 2488 KB Output is correct
88 Correct 24 ms 2720 KB Output is correct
89 Correct 24 ms 2888 KB Output is correct
90 Correct 15 ms 2640 KB Output is correct
91 Correct 22 ms 2640 KB Output is correct
92 Correct 21 ms 2720 KB Output is correct
93 Correct 25 ms 2980 KB Output is correct
94 Correct 26 ms 2740 KB Output is correct
95 Correct 23 ms 2640 KB Output is correct
96 Correct 22 ms 2888 KB Output is correct
97 Correct 24 ms 2892 KB Output is correct