oj.uz

Submission #1030429

# Submission time Handle Problem Language Result Execution time Memory
1030429 2024-07-22T05:02:51 Z shiomusubi496 The Big Prize (IOI17_prize) C++17
99.72 / 100
 40 ms 5744 KB 
#include "prize.h"

#include <bits/stdc++.h>

#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define rep2(i, a, b) for (int i = (int)(a); i < (int)(b); ++i)
#define rrep(i, n) for (int i = (int)(n) - 1; i >= 0; --i)
#define rrep2(i, a, b) for (int i = (int)(b) - 1; i >= (int)(a); --i)

#define all(v) begin(v), end(v)
#define rall(v) rbegin(v), rend(v)

using namespace std;

using ll = long long;

template<class T, class U> bool chmin(T& a, const U& b) { return a > b ? a = b, true : false; }
template<class T, class U> bool chmax(T& a, const U& b) { return a < b ? a = b, true : false; }

vector<vector<int>> memo;
vector<int> Ask(int n) {
    if (memo[n].empty()) memo[n] = ask(n);
    return memo[n];
}

int find_best(int n) {
    memo.resize(n);
    int cnt = 0, x = 500;
    rep (i, 500) {
        auto res = Ask(i);
        chmax(cnt, res[0] + res[1]);
        if (res[0] + res[1] == 0) return i;
        if (cnt >= 30) {
            x = i + 1;
            break;
        }
    }
    while (x < n) {
        int y = 0;
        while (x < n) {
            auto res = Ask(x);
            if (res[0] + res[1] == 0) return x;
            if (res[0] + res[1] == cnt) {
                y = res[0];
                break;
            }
            ++x;
        }
        int ok = 0, ng = n;
        while (ng - ok > 1) {
            int mid = (ok + ng) / 2;
            if (mid <= x) ok = mid;
            else {
                auto res = Ask(mid);
                if (res[0] + res[1] == 0) return mid;
                if (res[0] + res[1] < cnt) ng = mid;
                else if (res[0] > y) ng = mid;
                else ok = mid;
            }
        }
        x = ok + 1;
    }
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:63:1: warning: control reaches end of non-void function [-Wreturn-type]
   63 | }
      | ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 5208 KB Output is correct
2 Correct 6 ms 4952 KB Output is correct
3 Correct 7 ms 5144 KB Output is correct
4 Correct 5 ms 5208 KB Output is correct
5 Correct 8 ms 4952 KB Output is correct
6 Correct 2 ms 4952 KB Output is correct
7 Correct 5 ms 4952 KB Output is correct
8 Correct 5 ms 4952 KB Output is correct
9 Correct 7 ms 5032 KB Output is correct
10 Correct 6 ms 4952 KB Output is correct

Subtask #2
79.72 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4952 KB Output is correct
2 Correct 4 ms 5148 KB Output is correct
3 Correct 5 ms 5032 KB Output is correct
4 Correct 5 ms 5148 KB Output is correct
5 Correct 8 ms 4952 KB Output is correct
6 Correct 3 ms 4952 KB Output is correct
7 Correct 6 ms 4952 KB Output is correct
8 Correct 4 ms 4952 KB Output is correct
9 Correct 7 ms 4952 KB Output is correct
10 Correct 6 ms 4952 KB Output is correct
11 Correct 3 ms 5148 KB Output is correct
12 Correct 3 ms 4952 KB Output is correct
13 Correct 5 ms 4952 KB Output is correct
14 Correct 2 ms 856 KB Output is correct
15 Correct 6 ms 4952 KB Output is correct
16 Correct 26 ms 5456 KB Output is correct
17 Correct 3 ms 4952 KB Output is correct
18 Correct 34 ms 5412 KB Output is correct
19 Correct 2 ms 4952 KB Output is correct
20 Correct 8 ms 2648 KB Output is correct
21 Correct 9 ms 5196 KB Output is correct
22 Correct 4 ms 4952 KB Output is correct
23 Correct 5 ms 4952 KB Output is correct
24 Correct 4 ms 4952 KB Output is correct
25 Correct 16 ms 5184 KB Output is correct
26 Correct 15 ms 4952 KB Output is correct
27 Correct 5 ms 4952 KB Output is correct
28 Correct 22 ms 5208 KB Output is correct
29 Correct 13 ms 5200 KB Output is correct
30 Correct 40 ms 5264 KB Output is correct
31 Correct 3 ms 4952 KB Output is correct
32 Correct 6 ms 5208 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 15 ms 5208 KB Output is correct
35 Correct 6 ms 4952 KB Output is correct
36 Correct 8 ms 5208 KB Output is correct
37 Correct 3 ms 4952 KB Output is correct
38 Correct 5 ms 4952 KB Output is correct
39 Correct 13 ms 5208 KB Output is correct
40 Correct 38 ms 5200 KB Output is correct
41 Correct 24 ms 5412 KB Output is correct
42 Correct 17 ms 5208 KB Output is correct
43 Correct 15 ms 5424 KB Output is correct
44 Correct 15 ms 5152 KB Output is correct
45 Correct 9 ms 4952 KB Output is correct
46 Correct 2 ms 4952 KB Output is correct
47 Correct 14 ms 4952 KB Output is correct
48 Correct 21 ms 5424 KB Output is correct
49 Correct 5 ms 4952 KB Output is correct
50 Correct 25 ms 5208 KB Output is correct
51 Correct 12 ms 4952 KB Output is correct
52 Correct 3 ms 4952 KB Output is correct
53 Correct 6 ms 4952 KB Output is correct
54 Correct 10 ms 4952 KB Output is correct
55 Correct 3 ms 4952 KB Output is correct
56 Correct 24 ms 5744 KB Output is correct
57 Correct 26 ms 5208 KB Output is correct
58 Correct 23 ms 5220 KB Output is correct
59 Correct 19 ms 5424 KB Output is correct
60 Correct 14 ms 5244 KB Output is correct
61 Correct 5 ms 4952 KB Output is correct
62 Correct 4 ms 4952 KB Output is correct
63 Correct 5 ms 4952 KB Output is correct
64 Correct 5 ms 4952 KB Output is correct
65 Correct 3 ms 4952 KB Output is correct
66 Correct 4 ms 4952 KB Output is correct
67 Correct 3 ms 4952 KB Output is correct
68 Correct 5 ms 4952 KB Output is correct
69 Correct 5 ms 4952 KB Output is correct
70 Correct 3 ms 4952 KB Output is correct
71 Correct 25 ms 5732 KB Output is correct
72 Correct 5 ms 4952 KB Output is correct
73 Correct 24 ms 5464 KB Output is correct
74 Correct 26 ms 5180 KB Output is correct
75 Correct 5 ms 4952 KB Output is correct
76 Correct 26 ms 5464 KB Output is correct
77 Partially correct 30 ms 5672 KB Partially correct - number of queries: 5004
78 Correct 5 ms 5040 KB Output is correct
79 Correct 15 ms 5208 KB Output is correct
80 Correct 30 ms 5464 KB Output is correct
81 Partially correct 32 ms 5500 KB Partially correct - number of queries: 5028
82 Correct 26 ms 5660 KB Output is correct
83 Correct 6 ms 5164 KB Output is correct
84 Correct 26 ms 5476 KB Output is correct
85 Correct 37 ms 5492 KB Output is correct
86 Correct 5 ms 4952 KB Output is correct
87 Correct 3 ms 4952 KB Output is correct
88 Correct 5 ms 4952 KB Output is correct
89 Correct 5 ms 4952 KB Output is correct
90 Correct 5 ms 5036 KB Output is correct
91 Correct 4 ms 4952 KB Output is correct
92 Correct 5 ms 4952 KB Output is correct
93 Correct 7 ms 4952 KB Output is correct
94 Correct 9 ms 5208 KB Output is correct
95 Correct 7 ms 5408 KB Output is correct
96 Correct 6 ms 4952 KB Output is correct
97 Correct 5 ms 4952 KB Output is correct