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Submission #89241

# Submission time Handle Problem Language Result Execution time Memory
89241 2018-12-11T06:02:28 Z zoomswk The Big Prize (IOI17_prize) C++17
20 / 100
 97 ms 608 KB 
#include "prize.h"
#include <vector>
#include <algorithm>
using namespace std;

int m, res;
bool flag = false;

void solve(int l, int r, int num, int bef){
    if(num == 0) return;
    if(l > r) return;
    int mid = (l+r)/2;
    vector<int> resp = ask(mid);
    if(resp[0]+resp[1] == 0){
        res = mid;
        flag = true;
        return;
    }
    int b = mid;
    while(resp[0]+resp[1] != m && b < r){
        b++;
        resp = ask(b);
        if(resp[0]+resp[1] == 0){
            res = b;
            flag = true;
            return;
        }
    }
    if(resp[0]+resp[1] == m){
        solve(l, mid-1, resp[0]-(b-mid)-bef, bef);
        if(flag) return;
        solve(b+1, r, num-(resp[0]-bef), resp[0]);
        if(flag) return;
    } else{
        solve(l, mid-1, num, bef);
    }
    return;
}

int find_best(int n) {
    if(n <= 5000){
        for(int i=0; i<n; i++){
            vector<int> resp = ask(i);
            if(resp[0]+resp[1] == 0) return i;
        }
    }
    vector<int> resp;
    for(int i=0; i<470; i++){
        resp = ask(i);
        if(resp[0]+resp[1] == 0) return i;
        m = max(m, resp[0]+resp[1]);
    }
    
    solve(0, n-1, m, 0);
    
    return res;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 248 KB Output is correct
2 Correct 4 ms 480 KB Output is correct
3 Correct 4 ms 500 KB Output is correct
4 Correct 4 ms 500 KB Output is correct
5 Correct 4 ms 500 KB Output is correct
6 Correct 2 ms 500 KB Output is correct
7 Correct 4 ms 608 KB Output is correct
8 Correct 7 ms 608 KB Output is correct
9 Correct 4 ms 608 KB Output is correct
10 Correct 9 ms 608 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 608 KB Output is correct
2 Correct 7 ms 608 KB Output is correct
3 Correct 8 ms 608 KB Output is correct
4 Correct 7 ms 608 KB Output is correct
5 Correct 7 ms 608 KB Output is correct
6 Correct 2 ms 608 KB Output is correct
7 Correct 6 ms 608 KB Output is correct
8 Correct 8 ms 608 KB Output is correct
9 Correct 4 ms 608 KB Output is correct
10 Correct 5 ms 608 KB Output is correct
11 Correct 9 ms 608 KB Output is correct
12 Correct 8 ms 608 KB Output is correct
13 Correct 13 ms 608 KB Output is correct
14 Correct 9 ms 608 KB Output is correct
15 Correct 12 ms 608 KB Output is correct
16 Correct 47 ms 608 KB Output is correct
17 Correct 7 ms 608 KB Output is correct
18 Correct 58 ms 608 KB Output is correct
19 Correct 7 ms 608 KB Output is correct
20 Correct 18 ms 608 KB Output is correct
21 Correct 11 ms 608 KB Output is correct
22 Correct 5 ms 608 KB Output is correct
23 Correct 4 ms 608 KB Output is correct
24 Correct 6 ms 608 KB Output is correct
25 Correct 20 ms 608 KB Output is correct
26 Correct 26 ms 608 KB Output is correct
27 Correct 8 ms 608 KB Output is correct
28 Correct 44 ms 608 KB Output is correct
29 Correct 17 ms 608 KB Output is correct
30 Correct 27 ms 608 KB Output is correct
31 Correct 7 ms 608 KB Output is correct
32 Correct 9 ms 608 KB Output is correct
33 Correct 2 ms 608 KB Output is correct
34 Correct 18 ms 608 KB Output is correct
35 Correct 9 ms 608 KB Output is correct
36 Correct 15 ms 608 KB Output is correct
37 Correct 4 ms 608 KB Output is correct
38 Correct 7 ms 608 KB Output is correct
39 Correct 12 ms 608 KB Output is correct
40 Correct 20 ms 608 KB Output is correct
41 Correct 15 ms 608 KB Output is correct
42 Correct 28 ms 608 KB Output is correct
43 Correct 39 ms 608 KB Output is correct
44 Correct 11 ms 608 KB Output is correct
45 Correct 13 ms 608 KB Output is correct
46 Correct 6 ms 608 KB Output is correct
47 Correct 24 ms 608 KB Output is correct
48 Correct 16 ms 608 KB Output is correct
49 Correct 12 ms 608 KB Output is correct
50 Correct 51 ms 608 KB Output is correct
51 Correct 26 ms 608 KB Output is correct
52 Correct 6 ms 608 KB Output is correct
53 Correct 7 ms 608 KB Output is correct
54 Correct 26 ms 608 KB Output is correct
55 Correct 7 ms 608 KB Output is correct
56 Correct 22 ms 608 KB Output is correct
57 Correct 35 ms 608 KB Output is correct
58 Correct 28 ms 608 KB Output is correct
59 Correct 15 ms 608 KB Output is correct
60 Correct 30 ms 608 KB Output is correct
61 Correct 8 ms 608 KB Output is correct
62 Correct 6 ms 608 KB Output is correct
63 Correct 7 ms 608 KB Output is correct
64 Correct 7 ms 608 KB Output is correct
65 Correct 8 ms 608 KB Output is correct
66 Correct 5 ms 608 KB Output is correct
67 Correct 10 ms 608 KB Output is correct
68 Correct 7 ms 608 KB Output is correct
69 Correct 10 ms 608 KB Output is correct
70 Correct 5 ms 608 KB Output is correct
71 Partially correct 42 ms 608 KB Partially correct - number of queries: 5229
72 Correct 12 ms 608 KB Output is correct
73 Partially correct 54 ms 608 KB Partially correct - number of queries: 5166
74 Partially correct 51 ms 608 KB Partially correct - number of queries: 5193
75 Correct 8 ms 608 KB Output is correct
76 Correct 51 ms 608 KB Output is correct
77 Correct 54 ms 608 KB Output is correct
78 Correct 6 ms 608 KB Output is correct
79 Correct 30 ms 608 KB Output is correct
80 Correct 39 ms 608 KB Output is correct
81 Correct 22 ms 608 KB Output is correct
82 Correct 22 ms 608 KB Output is correct
83 Correct 8 ms 608 KB Output is correct
84 Correct 44 ms 608 KB Output is correct
85 Correct 43 ms 608 KB Output is correct
86 Incorrect 97 ms 608 KB Incorrect
87 Halted 0 ms 0 KB -