oj.uz

Submission #89243

# Submission time Handle Problem Language Result Execution time Memory
89243 2018-12-11T06:04:57 Z zoomswk The Big Prize (IOI17_prize) C++17
97.61 / 100
 60 ms 572 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<480; 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 376 KB Output is correct
2 Correct 2 ms 456 KB Output is correct
3 Correct 4 ms 456 KB Output is correct
4 Correct 8 ms 456 KB Output is correct
5 Correct 8 ms 456 KB Output is correct
6 Correct 2 ms 456 KB Output is correct
7 Correct 4 ms 456 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 5 ms 468 KB Output is correct
10 Correct 6 ms 496 KB Output is correct

Subtask #2
77.61 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 496 KB Output is correct
2 Correct 6 ms 496 KB Output is correct
3 Correct 6 ms 552 KB Output is correct
4 Correct 6 ms 552 KB Output is correct
5 Correct 4 ms 552 KB Output is correct
6 Correct 2 ms 552 KB Output is correct
7 Correct 8 ms 552 KB Output is correct
8 Correct 7 ms 552 KB Output is correct
9 Correct 7 ms 552 KB Output is correct
10 Correct 8 ms 552 KB Output is correct
11 Correct 4 ms 552 KB Output is correct
12 Correct 8 ms 552 KB Output is correct
13 Correct 13 ms 556 KB Output is correct
14 Correct 9 ms 556 KB Output is correct
15 Correct 5 ms 556 KB Output is correct
16 Correct 19 ms 572 KB Output is correct
17 Correct 6 ms 572 KB Output is correct
18 Correct 45 ms 572 KB Output is correct
19 Correct 6 ms 572 KB Output is correct
20 Correct 15 ms 572 KB Output is correct
21 Correct 11 ms 572 KB Output is correct
22 Correct 11 ms 572 KB Output is correct
23 Correct 6 ms 572 KB Output is correct
24 Correct 4 ms 572 KB Output is correct
25 Correct 26 ms 572 KB Output is correct
26 Correct 25 ms 572 KB Output is correct
27 Correct 4 ms 572 KB Output is correct
28 Correct 19 ms 572 KB Output is correct
29 Correct 16 ms 572 KB Output is correct
30 Correct 52 ms 572 KB Output is correct
31 Correct 6 ms 572 KB Output is correct
32 Correct 11 ms 572 KB Output is correct
33 Correct 2 ms 572 KB Output is correct
34 Correct 17 ms 572 KB Output is correct
35 Correct 7 ms 572 KB Output is correct
36 Correct 16 ms 572 KB Output is correct
37 Correct 8 ms 572 KB Output is correct
38 Correct 7 ms 572 KB Output is correct
39 Correct 12 ms 572 KB Output is correct
40 Correct 45 ms 572 KB Output is correct
41 Correct 21 ms 572 KB Output is correct
42 Correct 17 ms 572 KB Output is correct
43 Correct 30 ms 572 KB Output is correct
44 Correct 12 ms 572 KB Output is correct
45 Correct 16 ms 572 KB Output is correct
46 Correct 6 ms 572 KB Output is correct
47 Correct 16 ms 572 KB Output is correct
48 Correct 38 ms 572 KB Output is correct
49 Correct 5 ms 572 KB Output is correct
50 Correct 60 ms 572 KB Output is correct
51 Correct 12 ms 572 KB Output is correct
52 Correct 6 ms 572 KB Output is correct
53 Correct 7 ms 572 KB Output is correct
54 Correct 22 ms 572 KB Output is correct
55 Correct 7 ms 572 KB Output is correct
56 Correct 32 ms 572 KB Output is correct
57 Correct 39 ms 572 KB Output is correct
58 Correct 17 ms 572 KB Output is correct
59 Correct 15 ms 572 KB Output is correct
60 Correct 23 ms 572 KB Output is correct
61 Correct 7 ms 572 KB Output is correct
62 Correct 4 ms 572 KB Output is correct
63 Correct 9 ms 572 KB Output is correct
64 Correct 4 ms 572 KB Output is correct
65 Correct 4 ms 572 KB Output is correct
66 Correct 10 ms 572 KB Output is correct
67 Correct 10 ms 572 KB Output is correct
68 Correct 6 ms 572 KB Output is correct
69 Correct 11 ms 572 KB Output is correct
70 Correct 9 ms 572 KB Output is correct
71 Partially correct 47 ms 572 KB Partially correct - number of queries: 5239
72 Correct 12 ms 572 KB Output is correct
73 Partially correct 24 ms 572 KB Partially correct - number of queries: 5176
74 Partially correct 27 ms 572 KB Partially correct - number of queries: 5203
75 Correct 4 ms 572 KB Output is correct
76 Correct 28 ms 572 KB Output is correct
77 Correct 27 ms 572 KB Output is correct
78 Correct 11 ms 572 KB Output is correct
79 Correct 23 ms 572 KB Output is correct
80 Correct 22 ms 572 KB Output is correct
81 Correct 49 ms 572 KB Output is correct
82 Correct 22 ms 572 KB Output is correct
83 Correct 10 ms 572 KB Output is correct
84 Correct 41 ms 572 KB Output is correct
85 Correct 35 ms 572 KB Output is correct
86 Correct 9 ms 572 KB Output is correct
87 Correct 4 ms 572 KB Output is correct
88 Correct 6 ms 572 KB Output is correct
89 Correct 12 ms 572 KB Output is correct
90 Correct 10 ms 572 KB Output is correct
91 Correct 7 ms 572 KB Output is correct
92 Correct 13 ms 572 KB Output is correct
93 Correct 7 ms 572 KB Output is correct
94 Correct 16 ms 572 KB Output is correct
95 Correct 14 ms 572 KB Output is correct
96 Correct 11 ms 572 KB Output is correct
97 Correct 17 ms 572 KB Output is correct